Add API 31 sources
Test: None
Change-Id: Ie45894f7a232b2a15e2439b2527ca1813f334cc5
diff --git a/android/bluetooth/BluetoothAdapter.java b/android/bluetooth/BluetoothAdapter.java
new file mode 100644
index 0000000..5094498
--- /dev/null
+++ b/android/bluetooth/BluetoothAdapter.java
@@ -0,0 +1,4358 @@
+/*
+ * Copyright 2009-2016 The Android Open Source Project
+ * Copyright 2015 Samsung LSI
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.bluetooth;
+
+import static java.util.Objects.requireNonNull;
+
+import android.annotation.CallbackExecutor;
+import android.annotation.IntDef;
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.annotation.RequiresNoPermission;
+import android.annotation.RequiresPermission;
+import android.annotation.SdkConstant;
+import android.annotation.SdkConstant.SdkConstantType;
+import android.annotation.SuppressLint;
+import android.annotation.SystemApi;
+import android.app.ActivityThread;
+import android.app.PropertyInvalidatedCache;
+import android.bluetooth.BluetoothDevice.Transport;
+import android.bluetooth.BluetoothProfile.ConnectionPolicy;
+import android.bluetooth.annotations.RequiresBluetoothAdvertisePermission;
+import android.bluetooth.annotations.RequiresBluetoothConnectPermission;
+import android.bluetooth.annotations.RequiresBluetoothLocationPermission;
+import android.bluetooth.annotations.RequiresBluetoothScanPermission;
+import android.bluetooth.annotations.RequiresLegacyBluetoothAdminPermission;
+import android.bluetooth.annotations.RequiresLegacyBluetoothPermission;
+import android.bluetooth.le.BluetoothLeAdvertiser;
+import android.bluetooth.le.BluetoothLeScanner;
+import android.bluetooth.le.PeriodicAdvertisingManager;
+import android.bluetooth.le.ScanCallback;
+import android.bluetooth.le.ScanFilter;
+import android.bluetooth.le.ScanRecord;
+import android.bluetooth.le.ScanResult;
+import android.bluetooth.le.ScanSettings;
+import android.compat.annotation.UnsupportedAppUsage;
+import android.content.Attributable;
+import android.content.AttributionSource;
+import android.content.Context;
+import android.os.BatteryStats;
+import android.os.Binder;
+import android.os.Build;
+import android.os.IBinder;
+import android.os.ParcelUuid;
+import android.os.RemoteException;
+import android.os.ResultReceiver;
+import android.os.ServiceManager;
+import android.os.SynchronousResultReceiver;
+import android.os.SystemProperties;
+import android.util.Log;
+import android.util.Pair;
+
+import com.android.internal.annotations.GuardedBy;
+
+import java.io.IOException;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Locale;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
+import java.util.UUID;
+import java.util.WeakHashMap;
+import java.util.concurrent.Executor;
+import java.util.concurrent.TimeoutException;
+import java.util.concurrent.locks.ReentrantReadWriteLock;
+
+/**
+ * Represents the local device Bluetooth adapter. The {@link BluetoothAdapter}
+ * lets you perform fundamental Bluetooth tasks, such as initiate
+ * device discovery, query a list of bonded (paired) devices,
+ * instantiate a {@link BluetoothDevice} using a known MAC address, and create
+ * a {@link BluetoothServerSocket} to listen for connection requests from other
+ * devices, and start a scan for Bluetooth LE devices.
+ *
+ * <p>To get a {@link BluetoothAdapter} representing the local Bluetooth
+ * adapter, call the {@link BluetoothManager#getAdapter} function on {@link BluetoothManager}.
+ * On JELLY_BEAN_MR1 and below you will need to use the static {@link #getDefaultAdapter}
+ * method instead.
+ * </p><p>
+ * Fundamentally, this is your starting point for all
+ * Bluetooth actions. Once you have the local adapter, you can get a set of
+ * {@link BluetoothDevice} objects representing all paired devices with
+ * {@link #getBondedDevices()}; start device discovery with
+ * {@link #startDiscovery()}; or create a {@link BluetoothServerSocket} to
+ * listen for incoming RFComm connection requests with {@link
+ * #listenUsingRfcommWithServiceRecord(String, UUID)}; listen for incoming L2CAP Connection-oriented
+ * Channels (CoC) connection requests with {@link #listenUsingL2capChannel()}; or start a scan for
+ * Bluetooth LE devices with {@link #startLeScan(LeScanCallback callback)}.
+ * </p>
+ * <p>This class is thread safe.</p>
+ * <div class="special reference">
+ * <h3>Developer Guides</h3>
+ * <p>
+ * For more information about using Bluetooth, read the <a href=
+ * "{@docRoot}guide/topics/connectivity/bluetooth.html">Bluetooth</a> developer
+ * guide.
+ * </p>
+ * </div>
+ *
+ * {@see BluetoothDevice}
+ * {@see BluetoothServerSocket}
+ */
+public final class BluetoothAdapter {
+ private static final String TAG = "BluetoothAdapter";
+ private static final String DESCRIPTOR = "android.bluetooth.BluetoothAdapter";
+ private static final boolean DBG = true;
+ private static final boolean VDBG = false;
+
+ /**
+ * Default MAC address reported to a client that does not have the
+ * android.permission.LOCAL_MAC_ADDRESS permission.
+ *
+ * @hide
+ */
+ public static final String DEFAULT_MAC_ADDRESS = "02:00:00:00:00:00";
+
+ /**
+ * Sentinel error value for this class. Guaranteed to not equal any other
+ * integer constant in this class. Provided as a convenience for functions
+ * that require a sentinel error value, for example:
+ * <p><code>Intent.getIntExtra(BluetoothAdapter.EXTRA_STATE,
+ * BluetoothAdapter.ERROR)</code>
+ */
+ public static final int ERROR = Integer.MIN_VALUE;
+
+ /**
+ * Broadcast Action: The state of the local Bluetooth adapter has been
+ * changed.
+ * <p>For example, Bluetooth has been turned on or off.
+ * <p>Always contains the extra fields {@link #EXTRA_STATE} and {@link
+ * #EXTRA_PREVIOUS_STATE} containing the new and old states
+ * respectively.
+ */
+ @RequiresLegacyBluetoothPermission
+ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String
+ ACTION_STATE_CHANGED = "android.bluetooth.adapter.action.STATE_CHANGED";
+
+ /**
+ * Used as an int extra field in {@link #ACTION_STATE_CHANGED}
+ * intents to request the current power state. Possible values are:
+ * {@link #STATE_OFF},
+ * {@link #STATE_TURNING_ON},
+ * {@link #STATE_ON},
+ * {@link #STATE_TURNING_OFF},
+ */
+ public static final String EXTRA_STATE = "android.bluetooth.adapter.extra.STATE";
+ /**
+ * Used as an int extra field in {@link #ACTION_STATE_CHANGED}
+ * intents to request the previous power state. Possible values are:
+ * {@link #STATE_OFF},
+ * {@link #STATE_TURNING_ON},
+ * {@link #STATE_ON},
+ * {@link #STATE_TURNING_OFF}
+ */
+ public static final String EXTRA_PREVIOUS_STATE =
+ "android.bluetooth.adapter.extra.PREVIOUS_STATE";
+
+ /** @hide */
+ @IntDef(prefix = { "STATE_" }, value = {
+ STATE_OFF,
+ STATE_TURNING_ON,
+ STATE_ON,
+ STATE_TURNING_OFF,
+ STATE_BLE_TURNING_ON,
+ STATE_BLE_ON,
+ STATE_BLE_TURNING_OFF
+ })
+ @Retention(RetentionPolicy.SOURCE)
+ public @interface AdapterState {}
+
+ /**
+ * Indicates the local Bluetooth adapter is off.
+ */
+ public static final int STATE_OFF = 10;
+ /**
+ * Indicates the local Bluetooth adapter is turning on. However local
+ * clients should wait for {@link #STATE_ON} before attempting to
+ * use the adapter.
+ */
+ public static final int STATE_TURNING_ON = 11;
+ /**
+ * Indicates the local Bluetooth adapter is on, and ready for use.
+ */
+ public static final int STATE_ON = 12;
+ /**
+ * Indicates the local Bluetooth adapter is turning off. Local clients
+ * should immediately attempt graceful disconnection of any remote links.
+ */
+ public static final int STATE_TURNING_OFF = 13;
+
+ /**
+ * Indicates the local Bluetooth adapter is turning Bluetooth LE mode on.
+ *
+ * @hide
+ */
+ public static final int STATE_BLE_TURNING_ON = 14;
+
+ /**
+ * Indicates the local Bluetooth adapter is in LE only mode.
+ *
+ * @hide
+ */
+ public static final int STATE_BLE_ON = 15;
+
+ /**
+ * Indicates the local Bluetooth adapter is turning off LE only mode.
+ *
+ * @hide
+ */
+ public static final int STATE_BLE_TURNING_OFF = 16;
+
+ /**
+ * UUID of the GATT Read Characteristics for LE_PSM value.
+ *
+ * @hide
+ */
+ public static final UUID LE_PSM_CHARACTERISTIC_UUID =
+ UUID.fromString("2d410339-82b6-42aa-b34e-e2e01df8cc1a");
+
+ /**
+ * Human-readable string helper for AdapterState
+ *
+ * @hide
+ */
+ public static String nameForState(@AdapterState int state) {
+ switch (state) {
+ case STATE_OFF:
+ return "OFF";
+ case STATE_TURNING_ON:
+ return "TURNING_ON";
+ case STATE_ON:
+ return "ON";
+ case STATE_TURNING_OFF:
+ return "TURNING_OFF";
+ case STATE_BLE_TURNING_ON:
+ return "BLE_TURNING_ON";
+ case STATE_BLE_ON:
+ return "BLE_ON";
+ case STATE_BLE_TURNING_OFF:
+ return "BLE_TURNING_OFF";
+ default:
+ return "?!?!? (" + state + ")";
+ }
+ }
+
+ /**
+ * Activity Action: Show a system activity that requests discoverable mode.
+ * This activity will also request the user to turn on Bluetooth if it
+ * is not currently enabled.
+ * <p>Discoverable mode is equivalent to {@link
+ * #SCAN_MODE_CONNECTABLE_DISCOVERABLE}. It allows remote devices to see
+ * this Bluetooth adapter when they perform a discovery.
+ * <p>For privacy, Android is not discoverable by default.
+ * <p>The sender of this Intent can optionally use extra field {@link
+ * #EXTRA_DISCOVERABLE_DURATION} to request the duration of
+ * discoverability. Currently the default duration is 120 seconds, and
+ * maximum duration is capped at 300 seconds for each request.
+ * <p>Notification of the result of this activity is posted using the
+ * {@link android.app.Activity#onActivityResult} callback. The
+ * <code>resultCode</code>
+ * will be the duration (in seconds) of discoverability or
+ * {@link android.app.Activity#RESULT_CANCELED} if the user rejected
+ * discoverability or an error has occurred.
+ * <p>Applications can also listen for {@link #ACTION_SCAN_MODE_CHANGED}
+ * for global notification whenever the scan mode changes. For example, an
+ * application can be notified when the device has ended discoverability.
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothAdvertisePermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_ADVERTISE)
+ @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) public static final String
+ ACTION_REQUEST_DISCOVERABLE = "android.bluetooth.adapter.action.REQUEST_DISCOVERABLE";
+
+ /**
+ * Used as an optional int extra field in {@link
+ * #ACTION_REQUEST_DISCOVERABLE} intents to request a specific duration
+ * for discoverability in seconds. The current default is 120 seconds, and
+ * requests over 300 seconds will be capped. These values could change.
+ */
+ public static final String EXTRA_DISCOVERABLE_DURATION =
+ "android.bluetooth.adapter.extra.DISCOVERABLE_DURATION";
+
+ /**
+ * Activity Action: Show a system activity that allows the user to turn on
+ * Bluetooth.
+ * <p>This system activity will return once Bluetooth has completed turning
+ * on, or the user has decided not to turn Bluetooth on.
+ * <p>Notification of the result of this activity is posted using the
+ * {@link android.app.Activity#onActivityResult} callback. The
+ * <code>resultCode</code>
+ * will be {@link android.app.Activity#RESULT_OK} if Bluetooth has been
+ * turned on or {@link android.app.Activity#RESULT_CANCELED} if the user
+ * has rejected the request or an error has occurred.
+ * <p>Applications can also listen for {@link #ACTION_STATE_CHANGED}
+ * for global notification whenever Bluetooth is turned on or off.
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) public static final String
+ ACTION_REQUEST_ENABLE = "android.bluetooth.adapter.action.REQUEST_ENABLE";
+
+ /**
+ * Activity Action: Show a system activity that allows the user to turn off
+ * Bluetooth. This is used only if permission review is enabled which is for
+ * apps targeting API less than 23 require a permission review before any of
+ * the app's components can run.
+ * <p>This system activity will return once Bluetooth has completed turning
+ * off, or the user has decided not to turn Bluetooth off.
+ * <p>Notification of the result of this activity is posted using the
+ * {@link android.app.Activity#onActivityResult} callback. The
+ * <code>resultCode</code>
+ * will be {@link android.app.Activity#RESULT_OK} if Bluetooth has been
+ * turned off or {@link android.app.Activity#RESULT_CANCELED} if the user
+ * has rejected the request or an error has occurred.
+ * <p>Applications can also listen for {@link #ACTION_STATE_CHANGED}
+ * for global notification whenever Bluetooth is turned on or off.
+ *
+ * @hide
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) public static final String
+ ACTION_REQUEST_DISABLE = "android.bluetooth.adapter.action.REQUEST_DISABLE";
+
+ /**
+ * Activity Action: Show a system activity that allows user to enable BLE scans even when
+ * Bluetooth is turned off.<p>
+ *
+ * Notification of result of this activity is posted using
+ * {@link android.app.Activity#onActivityResult}. The <code>resultCode</code> will be
+ * {@link android.app.Activity#RESULT_OK} if BLE scan always available setting is turned on or
+ * {@link android.app.Activity#RESULT_CANCELED} if the user has rejected the request or an
+ * error occurred.
+ *
+ * @hide
+ */
+ @SystemApi
+ @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
+ public static final String ACTION_REQUEST_BLE_SCAN_ALWAYS_AVAILABLE =
+ "android.bluetooth.adapter.action.REQUEST_BLE_SCAN_ALWAYS_AVAILABLE";
+
+ /**
+ * Broadcast Action: Indicates the Bluetooth scan mode of the local Adapter
+ * has changed.
+ * <p>Always contains the extra fields {@link #EXTRA_SCAN_MODE} and {@link
+ * #EXTRA_PREVIOUS_SCAN_MODE} containing the new and old scan modes
+ * respectively.
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothScanPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_SCAN)
+ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String
+ ACTION_SCAN_MODE_CHANGED = "android.bluetooth.adapter.action.SCAN_MODE_CHANGED";
+
+ /**
+ * Used as an int extra field in {@link #ACTION_SCAN_MODE_CHANGED}
+ * intents to request the current scan mode. Possible values are:
+ * {@link #SCAN_MODE_NONE},
+ * {@link #SCAN_MODE_CONNECTABLE},
+ * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE},
+ */
+ public static final String EXTRA_SCAN_MODE = "android.bluetooth.adapter.extra.SCAN_MODE";
+ /**
+ * Used as an int extra field in {@link #ACTION_SCAN_MODE_CHANGED}
+ * intents to request the previous scan mode. Possible values are:
+ * {@link #SCAN_MODE_NONE},
+ * {@link #SCAN_MODE_CONNECTABLE},
+ * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE},
+ */
+ public static final String EXTRA_PREVIOUS_SCAN_MODE =
+ "android.bluetooth.adapter.extra.PREVIOUS_SCAN_MODE";
+
+ /** @hide */
+ @IntDef(prefix = { "SCAN_" }, value = {
+ SCAN_MODE_NONE,
+ SCAN_MODE_CONNECTABLE,
+ SCAN_MODE_CONNECTABLE_DISCOVERABLE
+ })
+ @Retention(RetentionPolicy.SOURCE)
+ public @interface ScanMode {}
+
+ /**
+ * Indicates that both inquiry scan and page scan are disabled on the local
+ * Bluetooth adapter. Therefore this device is neither discoverable
+ * nor connectable from remote Bluetooth devices.
+ */
+ public static final int SCAN_MODE_NONE = 20;
+ /**
+ * Indicates that inquiry scan is disabled, but page scan is enabled on the
+ * local Bluetooth adapter. Therefore this device is not discoverable from
+ * remote Bluetooth devices, but is connectable from remote devices that
+ * have previously discovered this device.
+ */
+ public static final int SCAN_MODE_CONNECTABLE = 21;
+ /**
+ * Indicates that both inquiry scan and page scan are enabled on the local
+ * Bluetooth adapter. Therefore this device is both discoverable and
+ * connectable from remote Bluetooth devices.
+ */
+ public static final int SCAN_MODE_CONNECTABLE_DISCOVERABLE = 23;
+
+ /**
+ * Device only has a display.
+ *
+ * @hide
+ */
+ public static final int IO_CAPABILITY_OUT = 0;
+
+ /**
+ * Device has a display and the ability to input Yes/No.
+ *
+ * @hide
+ */
+ public static final int IO_CAPABILITY_IO = 1;
+
+ /**
+ * Device only has a keyboard for entry but no display.
+ *
+ * @hide
+ */
+ public static final int IO_CAPABILITY_IN = 2;
+
+ /**
+ * Device has no Input or Output capability.
+ *
+ * @hide
+ */
+ public static final int IO_CAPABILITY_NONE = 3;
+
+ /**
+ * Device has a display and a full keyboard.
+ *
+ * @hide
+ */
+ public static final int IO_CAPABILITY_KBDISP = 4;
+
+ /**
+ * Maximum range value for Input/Output capabilities.
+ *
+ * <p>This should be updated when adding a new Input/Output capability. Other code
+ * like validation depends on this being accurate.
+ *
+ * @hide
+ */
+ public static final int IO_CAPABILITY_MAX = 5;
+
+ /**
+ * The Input/Output capability of the device is unknown.
+ *
+ * @hide
+ */
+ public static final int IO_CAPABILITY_UNKNOWN = 255;
+
+ /** @hide */
+ @IntDef({IO_CAPABILITY_OUT, IO_CAPABILITY_IO, IO_CAPABILITY_IN, IO_CAPABILITY_NONE,
+ IO_CAPABILITY_KBDISP})
+ @Retention(RetentionPolicy.SOURCE)
+ public @interface IoCapability {}
+
+ /** @hide */
+ @IntDef(prefix = "ACTIVE_DEVICE_", value = {ACTIVE_DEVICE_AUDIO,
+ ACTIVE_DEVICE_PHONE_CALL, ACTIVE_DEVICE_ALL})
+ @Retention(RetentionPolicy.SOURCE)
+ public @interface ActiveDeviceUse {}
+
+ /**
+ * Use the specified device for audio (a2dp and hearing aid profile)
+ *
+ * @hide
+ */
+ @SystemApi
+ public static final int ACTIVE_DEVICE_AUDIO = 0;
+
+ /**
+ * Use the specified device for phone calls (headset profile and hearing
+ * aid profile)
+ *
+ * @hide
+ */
+ @SystemApi
+ public static final int ACTIVE_DEVICE_PHONE_CALL = 1;
+
+ /**
+ * Use the specified device for a2dp, hearing aid profile, and headset profile
+ *
+ * @hide
+ */
+ @SystemApi
+ public static final int ACTIVE_DEVICE_ALL = 2;
+
+ /**
+ * Broadcast Action: The local Bluetooth adapter has started the remote
+ * device discovery process.
+ * <p>This usually involves an inquiry scan of about 12 seconds, followed
+ * by a page scan of each new device to retrieve its Bluetooth name.
+ * <p>Register for {@link BluetoothDevice#ACTION_FOUND} to be notified as
+ * remote Bluetooth devices are found.
+ * <p>Device discovery is a heavyweight procedure. New connections to
+ * remote Bluetooth devices should not be attempted while discovery is in
+ * progress, and existing connections will experience limited bandwidth
+ * and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing
+ * discovery.
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothScanPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_SCAN)
+ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String
+ ACTION_DISCOVERY_STARTED = "android.bluetooth.adapter.action.DISCOVERY_STARTED";
+ /**
+ * Broadcast Action: The local Bluetooth adapter has finished the device
+ * discovery process.
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothScanPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_SCAN)
+ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String
+ ACTION_DISCOVERY_FINISHED = "android.bluetooth.adapter.action.DISCOVERY_FINISHED";
+
+ /**
+ * Broadcast Action: The local Bluetooth adapter has changed its friendly
+ * Bluetooth name.
+ * <p>This name is visible to remote Bluetooth devices.
+ * <p>Always contains the extra field {@link #EXTRA_LOCAL_NAME} containing
+ * the name.
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String
+ ACTION_LOCAL_NAME_CHANGED = "android.bluetooth.adapter.action.LOCAL_NAME_CHANGED";
+ /**
+ * Used as a String extra field in {@link #ACTION_LOCAL_NAME_CHANGED}
+ * intents to request the local Bluetooth name.
+ */
+ public static final String EXTRA_LOCAL_NAME = "android.bluetooth.adapter.extra.LOCAL_NAME";
+
+ /**
+ * Intent used to broadcast the change in connection state of the local
+ * Bluetooth adapter to a profile of the remote device. When the adapter is
+ * not connected to any profiles of any remote devices and it attempts a
+ * connection to a profile this intent will be sent. Once connected, this intent
+ * will not be sent for any more connection attempts to any profiles of any
+ * remote device. When the adapter disconnects from the last profile its
+ * connected to of any remote device, this intent will be sent.
+ *
+ * <p> This intent is useful for applications that are only concerned about
+ * whether the local adapter is connected to any profile of any device and
+ * are not really concerned about which profile. For example, an application
+ * which displays an icon to display whether Bluetooth is connected or not
+ * can use this intent.
+ *
+ * <p>This intent will have 3 extras:
+ * {@link #EXTRA_CONNECTION_STATE} - The current connection state.
+ * {@link #EXTRA_PREVIOUS_CONNECTION_STATE}- The previous connection state.
+ * {@link BluetoothDevice#EXTRA_DEVICE} - The remote device.
+ *
+ * {@link #EXTRA_CONNECTION_STATE} or {@link #EXTRA_PREVIOUS_CONNECTION_STATE}
+ * can be any of {@link #STATE_DISCONNECTED}, {@link #STATE_CONNECTING},
+ * {@link #STATE_CONNECTED}, {@link #STATE_DISCONNECTING}.
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String
+ ACTION_CONNECTION_STATE_CHANGED =
+ "android.bluetooth.adapter.action.CONNECTION_STATE_CHANGED";
+
+ /**
+ * Extra used by {@link #ACTION_CONNECTION_STATE_CHANGED}
+ *
+ * This extra represents the current connection state.
+ */
+ public static final String EXTRA_CONNECTION_STATE =
+ "android.bluetooth.adapter.extra.CONNECTION_STATE";
+
+ /**
+ * Extra used by {@link #ACTION_CONNECTION_STATE_CHANGED}
+ *
+ * This extra represents the previous connection state.
+ */
+ public static final String EXTRA_PREVIOUS_CONNECTION_STATE =
+ "android.bluetooth.adapter.extra.PREVIOUS_CONNECTION_STATE";
+
+ /**
+ * Broadcast Action: The Bluetooth adapter state has changed in LE only mode.
+ *
+ * @hide
+ */
+ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
+ @SystemApi public static final String ACTION_BLE_STATE_CHANGED =
+ "android.bluetooth.adapter.action.BLE_STATE_CHANGED";
+
+ /**
+ * Intent used to broadcast the change in the Bluetooth address
+ * of the local Bluetooth adapter.
+ * <p>Always contains the extra field {@link
+ * #EXTRA_BLUETOOTH_ADDRESS} containing the Bluetooth address.
+ *
+ * Note: only system level processes are allowed to send this
+ * defined broadcast.
+ *
+ * @hide
+ */
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
+ public static final String ACTION_BLUETOOTH_ADDRESS_CHANGED =
+ "android.bluetooth.adapter.action.BLUETOOTH_ADDRESS_CHANGED";
+
+ /**
+ * Used as a String extra field in {@link
+ * #ACTION_BLUETOOTH_ADDRESS_CHANGED} intent to store the local
+ * Bluetooth address.
+ *
+ * @hide
+ */
+ public static final String EXTRA_BLUETOOTH_ADDRESS =
+ "android.bluetooth.adapter.extra.BLUETOOTH_ADDRESS";
+
+ /**
+ * Broadcast Action: The notifys Bluetooth ACL connected event. This will be
+ * by BLE Always on enabled application to know the ACL_CONNECTED event
+ * when Bluetooth state in STATE_BLE_ON. This denotes GATT connection
+ * as Bluetooth LE is the only feature available in STATE_BLE_ON
+ *
+ * This is counterpart of {@link BluetoothDevice#ACTION_ACL_CONNECTED} which
+ * works in Bluetooth state STATE_ON
+ *
+ * @hide
+ */
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
+ public static final String ACTION_BLE_ACL_CONNECTED =
+ "android.bluetooth.adapter.action.BLE_ACL_CONNECTED";
+
+ /**
+ * Broadcast Action: The notifys Bluetooth ACL connected event. This will be
+ * by BLE Always on enabled application to know the ACL_DISCONNECTED event
+ * when Bluetooth state in STATE_BLE_ON. This denotes GATT disconnection as Bluetooth
+ * LE is the only feature available in STATE_BLE_ON
+ *
+ * This is counterpart of {@link BluetoothDevice#ACTION_ACL_DISCONNECTED} which
+ * works in Bluetooth state STATE_ON
+ *
+ * @hide
+ */
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
+ public static final String ACTION_BLE_ACL_DISCONNECTED =
+ "android.bluetooth.adapter.action.BLE_ACL_DISCONNECTED";
+
+ /** The profile is in disconnected state */
+ public static final int STATE_DISCONNECTED = BluetoothProtoEnums.CONNECTION_STATE_DISCONNECTED;
+ /** The profile is in connecting state */
+ public static final int STATE_CONNECTING = BluetoothProtoEnums.CONNECTION_STATE_CONNECTING;
+ /** The profile is in connected state */
+ public static final int STATE_CONNECTED = BluetoothProtoEnums.CONNECTION_STATE_CONNECTED;
+ /** The profile is in disconnecting state */
+ public static final int STATE_DISCONNECTING =
+ BluetoothProtoEnums.CONNECTION_STATE_DISCONNECTING;
+
+ /** @hide */
+ public static final String BLUETOOTH_MANAGER_SERVICE = "bluetooth_manager";
+ private final IBinder mToken;
+
+
+ /**
+ * When creating a ServerSocket using listenUsingRfcommOn() or
+ * listenUsingL2capOn() use SOCKET_CHANNEL_AUTO_STATIC to create
+ * a ServerSocket that auto assigns a channel number to the first
+ * bluetooth socket.
+ * The channel number assigned to this first Bluetooth Socket will
+ * be stored in the ServerSocket, and reused for subsequent Bluetooth
+ * sockets.
+ *
+ * @hide
+ */
+ public static final int SOCKET_CHANNEL_AUTO_STATIC_NO_SDP = -2;
+
+
+ private static final int ADDRESS_LENGTH = 17;
+
+ /**
+ * Lazily initialized singleton. Guaranteed final after first object
+ * constructed.
+ */
+ private static BluetoothAdapter sAdapter;
+
+ private BluetoothLeScanner mBluetoothLeScanner;
+ private BluetoothLeAdvertiser mBluetoothLeAdvertiser;
+ private PeriodicAdvertisingManager mPeriodicAdvertisingManager;
+
+ private final IBluetoothManager mManagerService;
+ private final AttributionSource mAttributionSource;
+
+ // Yeah, keeping both mService and sService isn't pretty, but it's too late
+ // in the current release for a major refactoring, so we leave them both
+ // intact until this can be cleaned up in a future release
+
+ @UnsupportedAppUsage
+ @GuardedBy("mServiceLock")
+ private IBluetooth mService;
+ private final ReentrantReadWriteLock mServiceLock = new ReentrantReadWriteLock();
+
+ @GuardedBy("sServiceLock")
+ private static boolean sServiceRegistered;
+ @GuardedBy("sServiceLock")
+ private static IBluetooth sService;
+ private static final Object sServiceLock = new Object();
+
+ private final Object mLock = new Object();
+ private final Map<LeScanCallback, ScanCallback> mLeScanClients;
+ private final Map<BluetoothDevice, List<Pair<OnMetadataChangedListener, Executor>>>
+ mMetadataListeners = new HashMap<>();
+ private final Map<BluetoothConnectionCallback, Executor>
+ mBluetoothConnectionCallbackExecutorMap = new HashMap<>();
+
+ /**
+ * Bluetooth metadata listener. Overrides the default BluetoothMetadataListener
+ * implementation.
+ */
+ @SuppressLint("AndroidFrameworkBluetoothPermission")
+ private final IBluetoothMetadataListener mBluetoothMetadataListener =
+ new IBluetoothMetadataListener.Stub() {
+ @Override
+ public void onMetadataChanged(BluetoothDevice device, int key, byte[] value) {
+ Attributable.setAttributionSource(device, mAttributionSource);
+ synchronized (mMetadataListeners) {
+ if (mMetadataListeners.containsKey(device)) {
+ List<Pair<OnMetadataChangedListener, Executor>> list =
+ mMetadataListeners.get(device);
+ for (Pair<OnMetadataChangedListener, Executor> pair : list) {
+ OnMetadataChangedListener listener = pair.first;
+ Executor executor = pair.second;
+ executor.execute(() -> {
+ listener.onMetadataChanged(device, key, value);
+ });
+ }
+ }
+ }
+ return;
+ }
+ };
+
+ /**
+ * Get a handle to the default local Bluetooth adapter.
+ * <p>
+ * Currently Android only supports one Bluetooth adapter, but the API could
+ * be extended to support more. This will always return the default adapter.
+ * </p>
+ *
+ * @return the default local adapter, or null if Bluetooth is not supported
+ * on this hardware platform
+ * @deprecated this method will continue to work, but developers are
+ * strongly encouraged to migrate to using
+ * {@link BluetoothManager#getAdapter()}, since that approach
+ * enables support for {@link Context#createAttributionContext}.
+ */
+ @Deprecated
+ @RequiresNoPermission
+ public static synchronized BluetoothAdapter getDefaultAdapter() {
+ if (sAdapter == null) {
+ sAdapter = createAdapter(BluetoothManager.resolveAttributionSource(null));
+ }
+ return sAdapter;
+ }
+
+ /** {@hide} */
+ public static BluetoothAdapter createAdapter(AttributionSource attributionSource) {
+ IBinder binder = ServiceManager.getService(BLUETOOTH_MANAGER_SERVICE);
+ if (binder != null) {
+ return new BluetoothAdapter(IBluetoothManager.Stub.asInterface(binder),
+ attributionSource);
+ } else {
+ Log.e(TAG, "Bluetooth binder is null");
+ return null;
+ }
+ }
+
+ /**
+ * Use {@link #getDefaultAdapter} to get the BluetoothAdapter instance.
+ */
+ BluetoothAdapter(IBluetoothManager managerService, AttributionSource attributionSource) {
+ mManagerService = Objects.requireNonNull(managerService);
+ mAttributionSource = Objects.requireNonNull(attributionSource);
+ synchronized (mServiceLock.writeLock()) {
+ mService = getBluetoothService(mManagerCallback);
+ }
+ mLeScanClients = new HashMap<LeScanCallback, ScanCallback>();
+ mToken = new Binder(DESCRIPTOR);
+ }
+
+ /**
+ * Get a {@link BluetoothDevice} object for the given Bluetooth hardware
+ * address.
+ * <p>Valid Bluetooth hardware addresses must be upper case, in a format
+ * such as "00:11:22:33:AA:BB". The helper {@link #checkBluetoothAddress} is
+ * available to validate a Bluetooth address.
+ * <p>A {@link BluetoothDevice} will always be returned for a valid
+ * hardware address, even if this adapter has never seen that device.
+ *
+ * @param address valid Bluetooth MAC address
+ * @throws IllegalArgumentException if address is invalid
+ */
+ @RequiresNoPermission
+ public BluetoothDevice getRemoteDevice(String address) {
+ final BluetoothDevice res = new BluetoothDevice(address);
+ res.setAttributionSource(mAttributionSource);
+ return res;
+ }
+
+ /**
+ * Get a {@link BluetoothDevice} object for the given Bluetooth hardware
+ * address.
+ * <p>Valid Bluetooth hardware addresses must be 6 bytes. This method
+ * expects the address in network byte order (MSB first).
+ * <p>A {@link BluetoothDevice} will always be returned for a valid
+ * hardware address, even if this adapter has never seen that device.
+ *
+ * @param address Bluetooth MAC address (6 bytes)
+ * @throws IllegalArgumentException if address is invalid
+ */
+ @RequiresNoPermission
+ public BluetoothDevice getRemoteDevice(byte[] address) {
+ if (address == null || address.length != 6) {
+ throw new IllegalArgumentException("Bluetooth address must have 6 bytes");
+ }
+ final BluetoothDevice res = new BluetoothDevice(
+ String.format(Locale.US, "%02X:%02X:%02X:%02X:%02X:%02X", address[0], address[1],
+ address[2], address[3], address[4], address[5]));
+ res.setAttributionSource(mAttributionSource);
+ return res;
+ }
+
+ /**
+ * Returns a {@link BluetoothLeAdvertiser} object for Bluetooth LE Advertising operations.
+ * Will return null if Bluetooth is turned off or if Bluetooth LE Advertising is not
+ * supported on this device.
+ * <p>
+ * Use {@link #isMultipleAdvertisementSupported()} to check whether LE Advertising is supported
+ * on this device before calling this method.
+ */
+ @RequiresNoPermission
+ public BluetoothLeAdvertiser getBluetoothLeAdvertiser() {
+ if (!getLeAccess()) {
+ return null;
+ }
+ synchronized (mLock) {
+ if (mBluetoothLeAdvertiser == null) {
+ mBluetoothLeAdvertiser = new BluetoothLeAdvertiser(this);
+ }
+ return mBluetoothLeAdvertiser;
+ }
+ }
+
+ /**
+ * Returns a {@link PeriodicAdvertisingManager} object for Bluetooth LE Periodic Advertising
+ * operations. Will return null if Bluetooth is turned off or if Bluetooth LE Periodic
+ * Advertising is not supported on this device.
+ * <p>
+ * Use {@link #isLePeriodicAdvertisingSupported()} to check whether LE Periodic Advertising is
+ * supported on this device before calling this method.
+ *
+ * @hide
+ */
+ @RequiresNoPermission
+ public PeriodicAdvertisingManager getPeriodicAdvertisingManager() {
+ if (!getLeAccess()) {
+ return null;
+ }
+
+ if (!isLePeriodicAdvertisingSupported()) {
+ return null;
+ }
+
+ synchronized (mLock) {
+ if (mPeriodicAdvertisingManager == null) {
+ mPeriodicAdvertisingManager = new PeriodicAdvertisingManager(this);
+ }
+ return mPeriodicAdvertisingManager;
+ }
+ }
+
+ /**
+ * Returns a {@link BluetoothLeScanner} object for Bluetooth LE scan operations.
+ */
+ @RequiresNoPermission
+ public BluetoothLeScanner getBluetoothLeScanner() {
+ if (!getLeAccess()) {
+ return null;
+ }
+ synchronized (mLock) {
+ if (mBluetoothLeScanner == null) {
+ mBluetoothLeScanner = new BluetoothLeScanner(this);
+ }
+ return mBluetoothLeScanner;
+ }
+ }
+
+ /**
+ * Return true if Bluetooth is currently enabled and ready for use.
+ * <p>Equivalent to:
+ * <code>getBluetoothState() == STATE_ON</code>
+ *
+ * @return true if the local adapter is turned on
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresNoPermission
+ public boolean isEnabled() {
+ return getState() == BluetoothAdapter.STATE_ON;
+ }
+
+ /**
+ * Return true if Bluetooth LE(Always BLE On feature) is currently
+ * enabled and ready for use
+ * <p>This returns true if current state is either STATE_ON or STATE_BLE_ON
+ *
+ * @return true if the local Bluetooth LE adapter is turned on
+ * @hide
+ */
+ @SystemApi
+ @RequiresNoPermission
+ public boolean isLeEnabled() {
+ final int state = getLeState();
+ if (DBG) {
+ Log.d(TAG, "isLeEnabled(): " + BluetoothAdapter.nameForState(state));
+ }
+ return (state == BluetoothAdapter.STATE_ON
+ || state == BluetoothAdapter.STATE_BLE_ON
+ || state == BluetoothAdapter.STATE_TURNING_ON
+ || state == BluetoothAdapter.STATE_TURNING_OFF);
+ }
+
+ /**
+ * Turns off Bluetooth LE which was earlier turned on by calling enableBLE().
+ *
+ * <p> If the internal Adapter state is STATE_BLE_ON, this would trigger the transition
+ * to STATE_OFF and completely shut-down Bluetooth
+ *
+ * <p> If the Adapter state is STATE_ON, This would unregister the existance of
+ * special Bluetooth LE application and hence the further turning off of Bluetooth
+ * from UI would ensure the complete turn-off of Bluetooth rather than staying back
+ * BLE only state
+ *
+ * <p>This is an asynchronous call: it will return immediately, and
+ * clients should listen for {@link #ACTION_BLE_STATE_CHANGED}
+ * to be notified of subsequent adapter state changes If this call returns
+ * true, then the adapter state will immediately transition from {@link
+ * #STATE_ON} to {@link #STATE_TURNING_OFF}, and some time
+ * later transition to either {@link #STATE_BLE_ON} or {@link
+ * #STATE_OFF} based on the existance of the further Always BLE ON enabled applications
+ * If this call returns false then there was an
+ * immediate problem that will prevent the QAdapter from being turned off -
+ * such as the QAadapter already being turned off.
+ *
+ * @return true to indicate success, or false on immediate error
+ * @hide
+ */
+ @SystemApi
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public boolean disableBLE() {
+ if (!isBleScanAlwaysAvailable()) {
+ return false;
+ }
+ String packageName = ActivityThread.currentPackageName();
+ try {
+ return mManagerService.disableBle(mAttributionSource, mToken);
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ }
+ return false;
+ }
+
+ /**
+ * Applications who want to only use Bluetooth Low Energy (BLE) can call enableBLE.
+ *
+ * enableBLE registers the existence of an app using only LE functions.
+ *
+ * enableBLE may enable Bluetooth to an LE only mode so that an app can use
+ * LE related features (BluetoothGatt or BluetoothGattServer classes)
+ *
+ * If the user disables Bluetooth while an app is registered to use LE only features,
+ * Bluetooth will remain on in LE only mode for the app.
+ *
+ * When Bluetooth is in LE only mode, it is not shown as ON to the UI.
+ *
+ * <p>This is an asynchronous call: it returns immediately, and
+ * clients should listen for {@link #ACTION_BLE_STATE_CHANGED}
+ * to be notified of adapter state changes.
+ *
+ * If this call returns * true, then the adapter state is either in a mode where
+ * LE is available, or will transition from {@link #STATE_OFF} to {@link #STATE_BLE_TURNING_ON},
+ * and some time later transition to either {@link #STATE_OFF} or {@link #STATE_BLE_ON}.
+ *
+ * If this call returns false then there was an immediate problem that prevents the
+ * adapter from being turned on - such as Airplane mode.
+ *
+ * {@link #ACTION_BLE_STATE_CHANGED} returns the Bluetooth Adapter's various
+ * states, It includes all the classic Bluetooth Adapter states along with
+ * internal BLE only states
+ *
+ * @return true to indicate Bluetooth LE will be available, or false on immediate error
+ * @hide
+ */
+ @SystemApi
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public boolean enableBLE() {
+ if (!isBleScanAlwaysAvailable()) {
+ return false;
+ }
+ String packageName = ActivityThread.currentPackageName();
+ try {
+ return mManagerService.enableBle(mAttributionSource, mToken);
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ }
+
+ return false;
+ }
+
+ private static final String BLUETOOTH_GET_STATE_CACHE_PROPERTY = "cache_key.bluetooth.get_state";
+
+ private final PropertyInvalidatedCache<Void, Integer> mBluetoothGetStateCache =
+ new PropertyInvalidatedCache<Void, Integer>(
+ 8, BLUETOOTH_GET_STATE_CACHE_PROPERTY) {
+ @Override
+ @SuppressLint("AndroidFrameworkRequiresPermission")
+ protected Integer recompute(Void query) {
+ try {
+ return mService.getState();
+ } catch (RemoteException e) {
+ throw e.rethrowFromSystemServer();
+ }
+ }
+ };
+
+ /** @hide */
+ @RequiresNoPermission
+ public void disableBluetoothGetStateCache() {
+ mBluetoothGetStateCache.disableLocal();
+ }
+
+ /** @hide */
+ public static void invalidateBluetoothGetStateCache() {
+ PropertyInvalidatedCache.invalidateCache(BLUETOOTH_GET_STATE_CACHE_PROPERTY);
+ }
+
+ /**
+ * Fetch the current bluetooth state. If the service is down, return
+ * OFF.
+ */
+ @AdapterState
+ private int getStateInternal() {
+ int state = BluetoothAdapter.STATE_OFF;
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ state = mBluetoothGetStateCache.query(null);
+ }
+ } catch (RuntimeException e) {
+ if (e.getCause() instanceof RemoteException) {
+ Log.e(TAG, "", e.getCause());
+ } else {
+ throw e;
+ }
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return state;
+ }
+
+ /**
+ * Get the current state of the local Bluetooth adapter.
+ * <p>Possible return values are
+ * {@link #STATE_OFF},
+ * {@link #STATE_TURNING_ON},
+ * {@link #STATE_ON},
+ * {@link #STATE_TURNING_OFF}.
+ *
+ * @return current state of Bluetooth adapter
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresNoPermission
+ @AdapterState
+ public int getState() {
+ int state = getStateInternal();
+
+ // Consider all internal states as OFF
+ if (state == BluetoothAdapter.STATE_BLE_ON || state == BluetoothAdapter.STATE_BLE_TURNING_ON
+ || state == BluetoothAdapter.STATE_BLE_TURNING_OFF) {
+ if (VDBG) {
+ Log.d(TAG, "Consider " + BluetoothAdapter.nameForState(state) + " state as OFF");
+ }
+ state = BluetoothAdapter.STATE_OFF;
+ }
+ if (VDBG) {
+ Log.d(TAG, "" + hashCode() + ": getState(). Returning " + BluetoothAdapter.nameForState(
+ state));
+ }
+ return state;
+ }
+
+ /**
+ * Get the current state of the local Bluetooth adapter
+ * <p>This returns current internal state of Adapter including LE ON/OFF
+ *
+ * <p>Possible return values are
+ * {@link #STATE_OFF},
+ * {@link #STATE_BLE_TURNING_ON},
+ * {@link #STATE_BLE_ON},
+ * {@link #STATE_TURNING_ON},
+ * {@link #STATE_ON},
+ * {@link #STATE_TURNING_OFF},
+ * {@link #STATE_BLE_TURNING_OFF}.
+ *
+ * @return current state of Bluetooth adapter
+ * @hide
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresNoPermission
+ @AdapterState
+ @UnsupportedAppUsage(publicAlternatives = "Use {@link #getState()} instead to determine "
+ + "whether you can use BLE & BT classic.")
+ public int getLeState() {
+ int state = getStateInternal();
+
+ if (VDBG) {
+ Log.d(TAG, "getLeState() returning " + BluetoothAdapter.nameForState(state));
+ }
+ return state;
+ }
+
+ boolean getLeAccess() {
+ if (getLeState() == STATE_ON) {
+ return true;
+ } else if (getLeState() == STATE_BLE_ON) {
+ return true; // TODO: FILTER SYSTEM APPS HERE <--
+ }
+
+ return false;
+ }
+
+ /**
+ * Turn on the local Bluetooth adapter—do not use without explicit
+ * user action to turn on Bluetooth.
+ * <p>This powers on the underlying Bluetooth hardware, and starts all
+ * Bluetooth system services.
+ * <p class="caution"><strong>Bluetooth should never be enabled without
+ * direct user consent</strong>. If you want to turn on Bluetooth in order
+ * to create a wireless connection, you should use the {@link
+ * #ACTION_REQUEST_ENABLE} Intent, which will raise a dialog that requests
+ * user permission to turn on Bluetooth. The {@link #enable()} method is
+ * provided only for applications that include a user interface for changing
+ * system settings, such as a "power manager" app.</p>
+ * <p>This is an asynchronous call: it will return immediately, and
+ * clients should listen for {@link #ACTION_STATE_CHANGED}
+ * to be notified of subsequent adapter state changes. If this call returns
+ * true, then the adapter state will immediately transition from {@link
+ * #STATE_OFF} to {@link #STATE_TURNING_ON}, and some time
+ * later transition to either {@link #STATE_OFF} or {@link
+ * #STATE_ON}. If this call returns false then there was an
+ * immediate problem that will prevent the adapter from being turned on -
+ * such as Airplane mode, or the adapter is already turned on.
+ *
+ * @return true to indicate adapter startup has begun, or false on immediate error
+ */
+ @RequiresLegacyBluetoothAdminPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public boolean enable() {
+ if (isEnabled()) {
+ if (DBG) {
+ Log.d(TAG, "enable(): BT already enabled!");
+ }
+ return true;
+ }
+ try {
+ return mManagerService.enable(mAttributionSource);
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ }
+ return false;
+ }
+
+ /**
+ * Turn off the local Bluetooth adapter—do not use without explicit
+ * user action to turn off Bluetooth.
+ * <p>This gracefully shuts down all Bluetooth connections, stops Bluetooth
+ * system services, and powers down the underlying Bluetooth hardware.
+ * <p class="caution"><strong>Bluetooth should never be disabled without
+ * direct user consent</strong>. The {@link #disable()} method is
+ * provided only for applications that include a user interface for changing
+ * system settings, such as a "power manager" app.</p>
+ * <p>This is an asynchronous call: it will return immediately, and
+ * clients should listen for {@link #ACTION_STATE_CHANGED}
+ * to be notified of subsequent adapter state changes. If this call returns
+ * true, then the adapter state will immediately transition from {@link
+ * #STATE_ON} to {@link #STATE_TURNING_OFF}, and some time
+ * later transition to either {@link #STATE_OFF} or {@link
+ * #STATE_ON}. If this call returns false then there was an
+ * immediate problem that will prevent the adapter from being turned off -
+ * such as the adapter already being turned off.
+ *
+ * @return true to indicate adapter shutdown has begun, or false on immediate error
+ */
+ @RequiresLegacyBluetoothAdminPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public boolean disable() {
+ try {
+ return mManagerService.disable(mAttributionSource, true);
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ }
+ return false;
+ }
+
+ /**
+ * Turn off the local Bluetooth adapter and don't persist the setting.
+ *
+ * @return true to indicate adapter shutdown has begun, or false on immediate error
+ * @hide
+ */
+ @UnsupportedAppUsage(trackingBug = 171933273)
+ @RequiresLegacyBluetoothAdminPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public boolean disable(boolean persist) {
+
+ try {
+ return mManagerService.disable(mAttributionSource, persist);
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ }
+ return false;
+ }
+
+ /**
+ * Returns the hardware address of the local Bluetooth adapter.
+ * <p>For example, "00:11:22:AA:BB:CC".
+ *
+ * @return Bluetooth hardware address as string
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(allOf = {
+ android.Manifest.permission.BLUETOOTH_CONNECT,
+ android.Manifest.permission.LOCAL_MAC_ADDRESS,
+ })
+ public String getAddress() {
+ try {
+ return mManagerService.getAddress(mAttributionSource);
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ }
+ return null;
+ }
+
+ /**
+ * Get the friendly Bluetooth name of the local Bluetooth adapter.
+ * <p>This name is visible to remote Bluetooth devices.
+ *
+ * @return the Bluetooth name, or null on error
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public String getName() {
+ try {
+ return mManagerService.getName(mAttributionSource);
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ }
+ return null;
+ }
+
+ /** {@hide} */
+ @RequiresBluetoothAdvertisePermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_ADVERTISE)
+ public int getNameLengthForAdvertise() {
+ try {
+ return mService.getNameLengthForAdvertise(mAttributionSource);
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ }
+ return -1;
+ }
+
+ /**
+ * Factory reset bluetooth settings.
+ *
+ * @return true to indicate that the config file was successfully cleared
+ * @hide
+ */
+ @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(allOf = {
+ android.Manifest.permission.BLUETOOTH_CONNECT,
+ android.Manifest.permission.BLUETOOTH_PRIVILEGED,
+ })
+ public boolean factoryReset() {
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null && mService.factoryReset(mAttributionSource)
+ && mManagerService != null
+ && mManagerService.onFactoryReset(mAttributionSource)) {
+ return true;
+ }
+ Log.e(TAG, "factoryReset(): Setting persist.bluetooth.factoryreset to retry later");
+ SystemProperties.set("persist.bluetooth.factoryreset", "true");
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return false;
+ }
+
+ /**
+ * Get the UUIDs supported by the local Bluetooth adapter.
+ *
+ * @return the UUIDs supported by the local Bluetooth Adapter.
+ * @hide
+ */
+ @UnsupportedAppUsage
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public @Nullable ParcelUuid[] getUuids() {
+ if (getState() != STATE_ON) {
+ return null;
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.getUuids(mAttributionSource);
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return null;
+ }
+
+ /**
+ * Set the friendly Bluetooth name of the local Bluetooth adapter.
+ * <p>This name is visible to remote Bluetooth devices.
+ * <p>Valid Bluetooth names are a maximum of 248 bytes using UTF-8
+ * encoding, although many remote devices can only display the first
+ * 40 characters, and some may be limited to just 20.
+ * <p>If Bluetooth state is not {@link #STATE_ON}, this API
+ * will return false. After turning on Bluetooth,
+ * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON}
+ * to get the updated value.
+ *
+ * @param name a valid Bluetooth name
+ * @return true if the name was set, false otherwise
+ */
+ @RequiresLegacyBluetoothAdminPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public boolean setName(String name) {
+ if (getState() != STATE_ON) {
+ return false;
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.setName(name, mAttributionSource);
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return false;
+ }
+
+ /**
+ * Returns the {@link BluetoothClass} Bluetooth Class of Device (CoD) of the local Bluetooth
+ * adapter.
+ *
+ * @return {@link BluetoothClass} Bluetooth CoD of local Bluetooth device.
+ *
+ * @hide
+ */
+ @RequiresLegacyBluetoothAdminPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public BluetoothClass getBluetoothClass() {
+ if (getState() != STATE_ON) {
+ return null;
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.getBluetoothClass(mAttributionSource);
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return null;
+ }
+
+ /**
+ * Sets the {@link BluetoothClass} Bluetooth Class of Device (CoD) of the local Bluetooth
+ * adapter.
+ *
+ * <p>Note: This value persists across system reboot.
+ *
+ * @param bluetoothClass {@link BluetoothClass} to set the local Bluetooth adapter to.
+ * @return true if successful, false if unsuccessful.
+ *
+ * @hide
+ */
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(allOf = {
+ android.Manifest.permission.BLUETOOTH_CONNECT,
+ android.Manifest.permission.BLUETOOTH_PRIVILEGED,
+ })
+ public boolean setBluetoothClass(BluetoothClass bluetoothClass) {
+ if (getState() != STATE_ON) {
+ return false;
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.setBluetoothClass(bluetoothClass, mAttributionSource);
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return false;
+ }
+
+ /**
+ * Returns the Input/Output capability of the device for classic Bluetooth.
+ *
+ * @return Input/Output capability of the device. One of {@link #IO_CAPABILITY_OUT},
+ * {@link #IO_CAPABILITY_IO}, {@link #IO_CAPABILITY_IN}, {@link #IO_CAPABILITY_NONE},
+ * {@link #IO_CAPABILITY_KBDISP} or {@link #IO_CAPABILITY_UNKNOWN}.
+ *
+ * @hide
+ */
+ @RequiresLegacyBluetoothAdminPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ @IoCapability
+ public int getIoCapability() {
+ if (getState() != STATE_ON) return BluetoothAdapter.IO_CAPABILITY_UNKNOWN;
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) return mService.getIoCapability(mAttributionSource);
+ } catch (RemoteException e) {
+ Log.e(TAG, e.getMessage(), e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return BluetoothAdapter.IO_CAPABILITY_UNKNOWN;
+ }
+
+ /**
+ * Sets the Input/Output capability of the device for classic Bluetooth.
+ *
+ * <p>Changing the Input/Output capability of a device only takes effect on restarting the
+ * Bluetooth stack. You would need to restart the stack using {@link BluetoothAdapter#disable()}
+ * and {@link BluetoothAdapter#enable()} to see the changes.
+ *
+ * @param capability Input/Output capability of the device. One of {@link #IO_CAPABILITY_OUT},
+ * {@link #IO_CAPABILITY_IO}, {@link #IO_CAPABILITY_IN},
+ * {@link #IO_CAPABILITY_NONE} or {@link #IO_CAPABILITY_KBDISP}.
+ *
+ * @hide
+ */
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(allOf = {
+ android.Manifest.permission.BLUETOOTH_CONNECT,
+ android.Manifest.permission.BLUETOOTH_PRIVILEGED,
+ })
+ public boolean setIoCapability(@IoCapability int capability) {
+ if (getState() != STATE_ON) return false;
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) return mService.setIoCapability(capability, mAttributionSource);
+ } catch (RemoteException e) {
+ Log.e(TAG, e.getMessage(), e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return false;
+ }
+
+ /**
+ * Returns the Input/Output capability of the device for BLE operations.
+ *
+ * @return Input/Output capability of the device. One of {@link #IO_CAPABILITY_OUT},
+ * {@link #IO_CAPABILITY_IO}, {@link #IO_CAPABILITY_IN}, {@link #IO_CAPABILITY_NONE},
+ * {@link #IO_CAPABILITY_KBDISP} or {@link #IO_CAPABILITY_UNKNOWN}.
+ *
+ * @hide
+ */
+ @RequiresLegacyBluetoothAdminPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ @IoCapability
+ public int getLeIoCapability() {
+ if (getState() != STATE_ON) return BluetoothAdapter.IO_CAPABILITY_UNKNOWN;
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) return mService.getLeIoCapability(mAttributionSource);
+ } catch (RemoteException e) {
+ Log.e(TAG, e.getMessage(), e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return BluetoothAdapter.IO_CAPABILITY_UNKNOWN;
+ }
+
+ /**
+ * Sets the Input/Output capability of the device for BLE operations.
+ *
+ * <p>Changing the Input/Output capability of a device only takes effect on restarting the
+ * Bluetooth stack. You would need to restart the stack using {@link BluetoothAdapter#disable()}
+ * and {@link BluetoothAdapter#enable()} to see the changes.
+ *
+ * @param capability Input/Output capability of the device. One of {@link #IO_CAPABILITY_OUT},
+ * {@link #IO_CAPABILITY_IO}, {@link #IO_CAPABILITY_IN},
+ * {@link #IO_CAPABILITY_NONE} or {@link #IO_CAPABILITY_KBDISP}.
+ *
+ * @hide
+ */
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(allOf = {
+ android.Manifest.permission.BLUETOOTH_CONNECT,
+ android.Manifest.permission.BLUETOOTH_PRIVILEGED,
+ })
+ public boolean setLeIoCapability(@IoCapability int capability) {
+ if (getState() != STATE_ON) return false;
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) return mService.setLeIoCapability(capability, mAttributionSource);
+ } catch (RemoteException e) {
+ Log.e(TAG, e.getMessage(), e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return false;
+ }
+
+ /**
+ * Get the current Bluetooth scan mode of the local Bluetooth adapter.
+ * <p>The Bluetooth scan mode determines if the local adapter is
+ * connectable and/or discoverable from remote Bluetooth devices.
+ * <p>Possible values are:
+ * {@link #SCAN_MODE_NONE},
+ * {@link #SCAN_MODE_CONNECTABLE},
+ * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}.
+ * <p>If Bluetooth state is not {@link #STATE_ON}, this API
+ * will return {@link #SCAN_MODE_NONE}. After turning on Bluetooth,
+ * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON}
+ * to get the updated value.
+ *
+ * @return scan mode
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothScanPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_SCAN)
+ @ScanMode
+ public int getScanMode() {
+ if (getState() != STATE_ON) {
+ return SCAN_MODE_NONE;
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.getScanMode(mAttributionSource);
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return SCAN_MODE_NONE;
+ }
+
+ /**
+ * Set the Bluetooth scan mode of the local Bluetooth adapter.
+ * <p>The Bluetooth scan mode determines if the local adapter is
+ * connectable and/or discoverable from remote Bluetooth devices.
+ * <p>For privacy reasons, discoverable mode is automatically turned off
+ * after <code>durationMillis</code> milliseconds. For example, 120000 milliseconds should be
+ * enough for a remote device to initiate and complete its discovery process.
+ * <p>Valid scan mode values are:
+ * {@link #SCAN_MODE_NONE},
+ * {@link #SCAN_MODE_CONNECTABLE},
+ * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}.
+ * <p>If Bluetooth state is not {@link #STATE_ON}, this API
+ * will return false. After turning on Bluetooth,
+ * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON}
+ * to get the updated value.
+ * <p>Applications cannot set the scan mode. They should use
+ * <code>startActivityForResult(
+ * BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE})
+ * </code>instead.
+ *
+ * @param mode valid scan mode
+ * @param durationMillis time in milliseconds to apply scan mode, only used for {@link
+ * #SCAN_MODE_CONNECTABLE_DISCOVERABLE}
+ * @return true if the scan mode was set, false otherwise
+ * @hide
+ */
+ @UnsupportedAppUsage(publicAlternatives = "Use {@link #ACTION_REQUEST_DISCOVERABLE}, which "
+ + "shows UI that confirms the user wants to go into discoverable mode.")
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothScanPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_SCAN)
+ public boolean setScanMode(@ScanMode int mode, long durationMillis) {
+ if (getState() != STATE_ON) {
+ return false;
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ int durationSeconds = Math.toIntExact(durationMillis / 1000);
+ return mService.setScanMode(mode, durationSeconds, mAttributionSource);
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ } catch (ArithmeticException ex) {
+ Log.e(TAG, "setScanMode: Duration in seconds outside of the bounds of an int");
+ throw new IllegalArgumentException("Duration not in bounds. In seconds, the "
+ + "durationMillis must be in the range of an int");
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return false;
+ }
+
+ /**
+ * Set the Bluetooth scan mode of the local Bluetooth adapter.
+ * <p>The Bluetooth scan mode determines if the local adapter is
+ * connectable and/or discoverable from remote Bluetooth devices.
+ * <p>For privacy reasons, discoverable mode is automatically turned off
+ * after <code>duration</code> seconds. For example, 120 seconds should be
+ * enough for a remote device to initiate and complete its discovery
+ * process.
+ * <p>Valid scan mode values are:
+ * {@link #SCAN_MODE_NONE},
+ * {@link #SCAN_MODE_CONNECTABLE},
+ * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}.
+ * <p>If Bluetooth state is not {@link #STATE_ON}, this API
+ * will return false. After turning on Bluetooth,
+ * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON}
+ * to get the updated value.
+ * <p>Applications cannot set the scan mode. They should use
+ * <code>startActivityForResult(
+ * BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE})
+ * </code>instead.
+ *
+ * @param mode valid scan mode
+ * @return true if the scan mode was set, false otherwise
+ * @hide
+ */
+ @UnsupportedAppUsage
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothScanPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_SCAN)
+ public boolean setScanMode(@ScanMode int mode) {
+ if (getState() != STATE_ON) {
+ return false;
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.setScanMode(mode, getDiscoverableTimeout(), mAttributionSource);
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return false;
+ }
+
+ /** @hide */
+ @UnsupportedAppUsage
+ @RequiresBluetoothScanPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_SCAN)
+ public int getDiscoverableTimeout() {
+ if (getState() != STATE_ON) {
+ return -1;
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.getDiscoverableTimeout(mAttributionSource);
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return -1;
+ }
+
+ /** @hide */
+ @UnsupportedAppUsage
+ @RequiresBluetoothScanPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_SCAN)
+ public void setDiscoverableTimeout(int timeout) {
+ if (getState() != STATE_ON) {
+ return;
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ mService.setDiscoverableTimeout(timeout, mAttributionSource);
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ }
+
+ /**
+ * Get the end time of the latest remote device discovery process.
+ *
+ * @return the latest time that the bluetooth adapter was/will be in discovery mode, in
+ * milliseconds since the epoch. This time can be in the future if {@link #startDiscovery()} has
+ * been called recently.
+ * @hide
+ */
+ @SystemApi
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(allOf = {
+ android.Manifest.permission.BLUETOOTH_CONNECT,
+ android.Manifest.permission.BLUETOOTH_PRIVILEGED,
+ })
+ public long getDiscoveryEndMillis() {
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.getDiscoveryEndMillis(mAttributionSource);
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return -1;
+ }
+
+ /**
+ * Start the remote device discovery process.
+ * <p>The discovery process usually involves an inquiry scan of about 12
+ * seconds, followed by a page scan of each new device to retrieve its
+ * Bluetooth name.
+ * <p>This is an asynchronous call, it will return immediately. Register
+ * for {@link #ACTION_DISCOVERY_STARTED} and {@link
+ * #ACTION_DISCOVERY_FINISHED} intents to determine exactly when the
+ * discovery starts and completes. Register for {@link
+ * BluetoothDevice#ACTION_FOUND} to be notified as remote Bluetooth devices
+ * are found.
+ * <p>Device discovery is a heavyweight procedure. New connections to
+ * remote Bluetooth devices should not be attempted while discovery is in
+ * progress, and existing connections will experience limited bandwidth
+ * and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing
+ * discovery. Discovery is not managed by the Activity,
+ * but is run as a system service, so an application should always call
+ * {@link BluetoothAdapter#cancelDiscovery()} even if it
+ * did not directly request a discovery, just to be sure.
+ * <p>Device discovery will only find remote devices that are currently
+ * <i>discoverable</i> (inquiry scan enabled). Many Bluetooth devices are
+ * not discoverable by default, and need to be entered into a special mode.
+ * <p>If Bluetooth state is not {@link #STATE_ON}, this API
+ * will return false. After turning on Bluetooth, wait for {@link #ACTION_STATE_CHANGED}
+ * with {@link #STATE_ON} to get the updated value.
+ * <p>If a device is currently bonding, this request will be queued and executed once that
+ * device has finished bonding. If a request is already queued, this request will be ignored.
+ *
+ * @return true on success, false on error
+ */
+ @RequiresLegacyBluetoothAdminPermission
+ @RequiresBluetoothScanPermission
+ @RequiresBluetoothLocationPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_SCAN)
+ public boolean startDiscovery() {
+ if (getState() != STATE_ON) {
+ return false;
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.startDiscovery(mAttributionSource);
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return false;
+ }
+
+ /**
+ * Cancel the current device discovery process.
+ * <p>Because discovery is a heavyweight procedure for the Bluetooth
+ * adapter, this method should always be called before attempting to connect
+ * to a remote device with {@link
+ * android.bluetooth.BluetoothSocket#connect()}. Discovery is not managed by
+ * the Activity, but is run as a system service, so an application should
+ * always call cancel discovery even if it did not directly request a
+ * discovery, just to be sure.
+ * <p>If Bluetooth state is not {@link #STATE_ON}, this API
+ * will return false. After turning on Bluetooth,
+ * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON}
+ * to get the updated value.
+ *
+ * @return true on success, false on error
+ */
+ @RequiresLegacyBluetoothAdminPermission
+ @RequiresBluetoothScanPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_SCAN)
+ public boolean cancelDiscovery() {
+ if (getState() != STATE_ON) {
+ return false;
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.cancelDiscovery(mAttributionSource);
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return false;
+ }
+
+ /**
+ * Return true if the local Bluetooth adapter is currently in the device
+ * discovery process.
+ * <p>Device discovery is a heavyweight procedure. New connections to
+ * remote Bluetooth devices should not be attempted while discovery is in
+ * progress, and existing connections will experience limited bandwidth
+ * and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing
+ * discovery.
+ * <p>Applications can also register for {@link #ACTION_DISCOVERY_STARTED}
+ * or {@link #ACTION_DISCOVERY_FINISHED} to be notified when discovery
+ * starts or completes.
+ * <p>If Bluetooth state is not {@link #STATE_ON}, this API
+ * will return false. After turning on Bluetooth,
+ * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON}
+ * to get the updated value.
+ *
+ * @return true if discovering
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothScanPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_SCAN)
+ public boolean isDiscovering() {
+ if (getState() != STATE_ON) {
+ return false;
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.isDiscovering(mAttributionSource);
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return false;
+ }
+
+ /**
+ * Removes the active device for the grouping of @ActiveDeviceUse specified
+ *
+ * @param profiles represents the purpose for which we are setting this as the active device.
+ * Possible values are:
+ * {@link BluetoothAdapter#ACTIVE_DEVICE_AUDIO},
+ * {@link BluetoothAdapter#ACTIVE_DEVICE_PHONE_CALL},
+ * {@link BluetoothAdapter#ACTIVE_DEVICE_ALL}
+ * @return false on immediate error, true otherwise
+ * @throws IllegalArgumentException if device is null or profiles is not one of
+ * {@link ActiveDeviceUse}
+ * @hide
+ */
+ @SystemApi
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(allOf = {
+ android.Manifest.permission.BLUETOOTH_CONNECT,
+ android.Manifest.permission.BLUETOOTH_PRIVILEGED,
+ android.Manifest.permission.MODIFY_PHONE_STATE,
+ })
+ public boolean removeActiveDevice(@ActiveDeviceUse int profiles) {
+ if (profiles != ACTIVE_DEVICE_AUDIO && profiles != ACTIVE_DEVICE_PHONE_CALL
+ && profiles != ACTIVE_DEVICE_ALL) {
+ Log.e(TAG, "Invalid profiles param value in removeActiveDevice");
+ throw new IllegalArgumentException("Profiles must be one of "
+ + "BluetoothAdapter.ACTIVE_DEVICE_AUDIO, "
+ + "BluetoothAdapter.ACTIVE_DEVICE_PHONE_CALL, or "
+ + "BluetoothAdapter.ACTIVE_DEVICE_ALL");
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ if (DBG) Log.d(TAG, "removeActiveDevice, profiles: " + profiles);
+ return mService.removeActiveDevice(profiles, mAttributionSource);
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+
+ return false;
+ }
+
+ /**
+ * Sets device as the active devices for the profiles passed into the function
+ *
+ * @param device is the remote bluetooth device
+ * @param profiles represents the purpose for which we are setting this as the active device.
+ * Possible values are:
+ * {@link BluetoothAdapter#ACTIVE_DEVICE_AUDIO},
+ * {@link BluetoothAdapter#ACTIVE_DEVICE_PHONE_CALL},
+ * {@link BluetoothAdapter#ACTIVE_DEVICE_ALL}
+ * @return false on immediate error, true otherwise
+ * @throws IllegalArgumentException if device is null or profiles is not one of
+ * {@link ActiveDeviceUse}
+ * @hide
+ */
+ @SystemApi
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(allOf = {
+ android.Manifest.permission.BLUETOOTH_CONNECT,
+ android.Manifest.permission.BLUETOOTH_PRIVILEGED,
+ android.Manifest.permission.MODIFY_PHONE_STATE,
+ })
+ public boolean setActiveDevice(@NonNull BluetoothDevice device,
+ @ActiveDeviceUse int profiles) {
+ if (device == null) {
+ Log.e(TAG, "setActiveDevice: Null device passed as parameter");
+ throw new IllegalArgumentException("device cannot be null");
+ }
+ if (profiles != ACTIVE_DEVICE_AUDIO && profiles != ACTIVE_DEVICE_PHONE_CALL
+ && profiles != ACTIVE_DEVICE_ALL) {
+ Log.e(TAG, "Invalid profiles param value in setActiveDevice");
+ throw new IllegalArgumentException("Profiles must be one of "
+ + "BluetoothAdapter.ACTIVE_DEVICE_AUDIO, "
+ + "BluetoothAdapter.ACTIVE_DEVICE_PHONE_CALL, or "
+ + "BluetoothAdapter.ACTIVE_DEVICE_ALL");
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ if (DBG) {
+ Log.d(TAG, "setActiveDevice, device: " + device + ", profiles: " + profiles);
+ }
+ return mService.setActiveDevice(device, profiles, mAttributionSource);
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+
+ return false;
+ }
+
+ /**
+ * Connects all enabled and supported bluetooth profiles between the local and remote device.
+ * Connection is asynchronous and you should listen to each profile's broadcast intent
+ * ACTION_CONNECTION_STATE_CHANGED to verify whether connection was successful. For example,
+ * to verify a2dp is connected, you would listen for
+ * {@link BluetoothA2dp#ACTION_CONNECTION_STATE_CHANGED}
+ *
+ * @param device is the remote device with which to connect these profiles
+ * @return true if message sent to try to connect all profiles, false if an error occurred
+ *
+ * @hide
+ */
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(allOf = {
+ android.Manifest.permission.BLUETOOTH_CONNECT,
+ android.Manifest.permission.BLUETOOTH_PRIVILEGED,
+ android.Manifest.permission.MODIFY_PHONE_STATE,
+ })
+ public boolean connectAllEnabledProfiles(@NonNull BluetoothDevice device) {
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.connectAllEnabledProfiles(device, mAttributionSource);
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+
+ return false;
+ }
+
+ /**
+ * Disconnects all enabled and supported bluetooth profiles between the local and remote device.
+ * Disconnection is asynchronous and you should listen to each profile's broadcast intent
+ * ACTION_CONNECTION_STATE_CHANGED to verify whether disconnection was successful. For example,
+ * to verify a2dp is disconnected, you would listen for
+ * {@link BluetoothA2dp#ACTION_CONNECTION_STATE_CHANGED}
+ *
+ * @param device is the remote device with which to disconnect these profiles
+ * @return true if message sent to try to disconnect all profiles, false if an error occurred
+ *
+ * @hide
+ */
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(allOf = {
+ android.Manifest.permission.BLUETOOTH_CONNECT,
+ android.Manifest.permission.BLUETOOTH_PRIVILEGED,
+ })
+ public boolean disconnectAllEnabledProfiles(@NonNull BluetoothDevice device) {
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.disconnectAllEnabledProfiles(device, mAttributionSource);
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+
+ return false;
+ }
+
+ /**
+ * Return true if the multi advertisement is supported by the chipset
+ *
+ * @return true if Multiple Advertisement feature is supported
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresNoPermission
+ public boolean isMultipleAdvertisementSupported() {
+ if (getState() != STATE_ON) {
+ return false;
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.isMultiAdvertisementSupported();
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "failed to get isMultipleAdvertisementSupported, error: ", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return false;
+ }
+
+ /**
+ * Returns {@code true} if BLE scan is always available, {@code false} otherwise. <p>
+ *
+ * If this returns {@code true}, application can issue {@link BluetoothLeScanner#startScan} and
+ * fetch scan results even when Bluetooth is turned off.<p>
+ *
+ * To change this setting, use {@link #ACTION_REQUEST_BLE_SCAN_ALWAYS_AVAILABLE}.
+ *
+ * @hide
+ */
+ @SystemApi
+ @RequiresNoPermission
+ public boolean isBleScanAlwaysAvailable() {
+ try {
+ return mManagerService.isBleScanAlwaysAvailable();
+ } catch (RemoteException e) {
+ Log.e(TAG, "remote expection when calling isBleScanAlwaysAvailable", e);
+ return false;
+ }
+ }
+
+ private static final String BLUETOOTH_FILTERING_CACHE_PROPERTY =
+ "cache_key.bluetooth.is_offloaded_filtering_supported";
+ private final PropertyInvalidatedCache<Void, Boolean> mBluetoothFilteringCache =
+ new PropertyInvalidatedCache<Void, Boolean>(
+ 8, BLUETOOTH_FILTERING_CACHE_PROPERTY) {
+ @Override
+ @SuppressLint("AndroidFrameworkRequiresPermission")
+ protected Boolean recompute(Void query) {
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.isOffloadedFilteringSupported();
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "failed to get isOffloadedFilteringSupported, error: ", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return false;
+
+ }
+ };
+
+ /** @hide */
+ @RequiresNoPermission
+ public void disableIsOffloadedFilteringSupportedCache() {
+ mBluetoothFilteringCache.disableLocal();
+ }
+
+ /** @hide */
+ public static void invalidateIsOffloadedFilteringSupportedCache() {
+ PropertyInvalidatedCache.invalidateCache(BLUETOOTH_FILTERING_CACHE_PROPERTY);
+ }
+
+ /**
+ * Return true if offloaded filters are supported
+ *
+ * @return true if chipset supports on-chip filtering
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresNoPermission
+ public boolean isOffloadedFilteringSupported() {
+ if (!getLeAccess()) {
+ return false;
+ }
+ return mBluetoothFilteringCache.query(null);
+ }
+
+ /**
+ * Return true if offloaded scan batching is supported
+ *
+ * @return true if chipset supports on-chip scan batching
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresNoPermission
+ public boolean isOffloadedScanBatchingSupported() {
+ if (!getLeAccess()) {
+ return false;
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.isOffloadedScanBatchingSupported();
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "failed to get isOffloadedScanBatchingSupported, error: ", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return false;
+ }
+
+ /**
+ * Return true if LE 2M PHY feature is supported.
+ *
+ * @return true if chipset supports LE 2M PHY feature
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresNoPermission
+ public boolean isLe2MPhySupported() {
+ if (!getLeAccess()) {
+ return false;
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.isLe2MPhySupported();
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "failed to get isExtendedAdvertisingSupported, error: ", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return false;
+ }
+
+ /**
+ * Return true if LE Coded PHY feature is supported.
+ *
+ * @return true if chipset supports LE Coded PHY feature
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresNoPermission
+ public boolean isLeCodedPhySupported() {
+ if (!getLeAccess()) {
+ return false;
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.isLeCodedPhySupported();
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "failed to get isLeCodedPhySupported, error: ", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return false;
+ }
+
+ /**
+ * Return true if LE Extended Advertising feature is supported.
+ *
+ * @return true if chipset supports LE Extended Advertising feature
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresNoPermission
+ public boolean isLeExtendedAdvertisingSupported() {
+ if (!getLeAccess()) {
+ return false;
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.isLeExtendedAdvertisingSupported();
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "failed to get isLeExtendedAdvertisingSupported, error: ", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return false;
+ }
+
+ /**
+ * Return true if LE Periodic Advertising feature is supported.
+ *
+ * @return true if chipset supports LE Periodic Advertising feature
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresNoPermission
+ public boolean isLePeriodicAdvertisingSupported() {
+ if (!getLeAccess()) {
+ return false;
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.isLePeriodicAdvertisingSupported();
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "failed to get isLePeriodicAdvertisingSupported, error: ", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return false;
+ }
+
+ /**
+ * Return the maximum LE advertising data length in bytes,
+ * if LE Extended Advertising feature is supported, 0 otherwise.
+ *
+ * @return the maximum LE advertising data length.
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresNoPermission
+ public int getLeMaximumAdvertisingDataLength() {
+ if (!getLeAccess()) {
+ return 0;
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.getLeMaximumAdvertisingDataLength();
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "failed to get getLeMaximumAdvertisingDataLength, error: ", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return 0;
+ }
+
+ /**
+ * Return true if Hearing Aid Profile is supported.
+ *
+ * @return true if phone supports Hearing Aid Profile
+ */
+ @RequiresNoPermission
+ private boolean isHearingAidProfileSupported() {
+ try {
+ return mManagerService.isHearingAidProfileSupported();
+ } catch (RemoteException e) {
+ Log.e(TAG, "remote expection when calling isHearingAidProfileSupported", e);
+ return false;
+ }
+ }
+
+ /**
+ * Get the maximum number of connected audio devices.
+ *
+ * @return the maximum number of connected audio devices
+ * @hide
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public int getMaxConnectedAudioDevices() {
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.getMaxConnectedAudioDevices(mAttributionSource);
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "failed to get getMaxConnectedAudioDevices, error: ", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return 1;
+ }
+
+ /**
+ * Return true if hardware has entries available for matching beacons
+ *
+ * @return true if there are hw entries available for matching beacons
+ * @hide
+ */
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public boolean isHardwareTrackingFiltersAvailable() {
+ if (!getLeAccess()) {
+ return false;
+ }
+ try {
+ IBluetoothGatt iGatt = mManagerService.getBluetoothGatt();
+ if (iGatt == null) {
+ // BLE is not supported
+ return false;
+ }
+ return (iGatt.numHwTrackFiltersAvailable(mAttributionSource) != 0);
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ }
+ return false;
+ }
+
+ /**
+ * Return the record of {@link BluetoothActivityEnergyInfo} object that
+ * has the activity and energy info. This can be used to ascertain what
+ * the controller has been up to, since the last sample.
+ *
+ * @param updateType Type of info, cached vs refreshed.
+ * @return a record with {@link BluetoothActivityEnergyInfo} or null if report is unavailable or
+ * unsupported
+ * @hide
+ * @deprecated use the asynchronous {@link #requestControllerActivityEnergyInfo(ResultReceiver)}
+ * instead.
+ */
+ @Deprecated
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(allOf = {
+ android.Manifest.permission.BLUETOOTH_CONNECT,
+ android.Manifest.permission.BLUETOOTH_PRIVILEGED,
+ })
+ public BluetoothActivityEnergyInfo getControllerActivityEnergyInfo(int updateType) {
+ SynchronousResultReceiver receiver = new SynchronousResultReceiver();
+ requestControllerActivityEnergyInfo(receiver);
+ try {
+ SynchronousResultReceiver.Result result = receiver.awaitResult(1000);
+ if (result.bundle != null) {
+ return result.bundle.getParcelable(BatteryStats.RESULT_RECEIVER_CONTROLLER_KEY);
+ }
+ } catch (TimeoutException e) {
+ Log.e(TAG, "getControllerActivityEnergyInfo timed out");
+ }
+ return null;
+ }
+
+ /**
+ * Request the record of {@link BluetoothActivityEnergyInfo} object that
+ * has the activity and energy info. This can be used to ascertain what
+ * the controller has been up to, since the last sample.
+ *
+ * A null value for the activity info object may be sent if the bluetooth service is
+ * unreachable or the device does not support reporting such information.
+ *
+ * @param result The callback to which to send the activity info.
+ * @hide
+ */
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(allOf = {
+ android.Manifest.permission.BLUETOOTH_CONNECT,
+ android.Manifest.permission.BLUETOOTH_PRIVILEGED,
+ })
+ public void requestControllerActivityEnergyInfo(ResultReceiver result) {
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ mService.requestActivityInfo(result, mAttributionSource);
+ result = null;
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "getControllerActivityEnergyInfoCallback: " + e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ if (result != null) {
+ // Only send an immediate result if we failed.
+ result.send(0, null);
+ }
+ }
+ }
+
+ /**
+ * Fetches a list of the most recently connected bluetooth devices ordered by how recently they
+ * were connected with most recently first and least recently last
+ *
+ * @return {@link List} of bonded {@link BluetoothDevice} ordered by how recently they were
+ * connected
+ *
+ * @hide
+ */
+ @RequiresLegacyBluetoothAdminPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public @NonNull List<BluetoothDevice> getMostRecentlyConnectedDevices() {
+ if (getState() != STATE_ON) {
+ return new ArrayList<>();
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return Attributable.setAttributionSource(
+ mService.getMostRecentlyConnectedDevices(mAttributionSource),
+ mAttributionSource);
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return new ArrayList<>();
+ }
+
+ /**
+ * Return the set of {@link BluetoothDevice} objects that are bonded
+ * (paired) to the local adapter.
+ * <p>If Bluetooth state is not {@link #STATE_ON}, this API
+ * will return an empty set. After turning on Bluetooth,
+ * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON}
+ * to get the updated value.
+ *
+ * @return unmodifiable set of {@link BluetoothDevice}, or null on error
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public Set<BluetoothDevice> getBondedDevices() {
+ if (getState() != STATE_ON) {
+ return toDeviceSet(Arrays.asList());
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return toDeviceSet(Attributable.setAttributionSource(
+ Arrays.asList(mService.getBondedDevices(mAttributionSource)),
+ mAttributionSource));
+ }
+ return toDeviceSet(Arrays.asList());
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return null;
+ }
+
+ /**
+ * Gets the currently supported profiles by the adapter.
+ *
+ * <p> This can be used to check whether a profile is supported before attempting
+ * to connect to its respective proxy.
+ *
+ * @return a list of integers indicating the ids of supported profiles as defined in {@link
+ * BluetoothProfile}.
+ * @hide
+ */
+ @RequiresNoPermission
+ public @NonNull List<Integer> getSupportedProfiles() {
+ final ArrayList<Integer> supportedProfiles = new ArrayList<Integer>();
+
+ try {
+ synchronized (mManagerCallback) {
+ if (mService != null) {
+ final long supportedProfilesBitMask = mService.getSupportedProfiles();
+
+ for (int i = 0; i <= BluetoothProfile.MAX_PROFILE_ID; i++) {
+ if ((supportedProfilesBitMask & (1 << i)) != 0) {
+ supportedProfiles.add(i);
+ }
+ }
+ } else {
+ // Bluetooth is disabled. Just fill in known supported Profiles
+ if (isHearingAidProfileSupported()) {
+ supportedProfiles.add(BluetoothProfile.HEARING_AID);
+ }
+ }
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "getSupportedProfiles:", e);
+ }
+ return supportedProfiles;
+ }
+
+ private static final String BLUETOOTH_GET_ADAPTER_CONNECTION_STATE_CACHE_PROPERTY =
+ "cache_key.bluetooth.get_adapter_connection_state";
+ private final PropertyInvalidatedCache<Void, Integer>
+ mBluetoothGetAdapterConnectionStateCache =
+ new PropertyInvalidatedCache<Void, Integer> (
+ 8, BLUETOOTH_GET_ADAPTER_CONNECTION_STATE_CACHE_PROPERTY) {
+ /**
+ * This method must not be called when mService is null.
+ */
+ @Override
+ @SuppressLint("AndroidFrameworkRequiresPermission")
+ protected Integer recompute(Void query) {
+ try {
+ return mService.getAdapterConnectionState();
+ } catch (RemoteException e) {
+ throw e.rethrowAsRuntimeException();
+ }
+ }
+ };
+
+ /** @hide */
+ @RequiresNoPermission
+ public void disableGetAdapterConnectionStateCache() {
+ mBluetoothGetAdapterConnectionStateCache.disableLocal();
+ }
+
+ /** @hide */
+ public static void invalidateGetAdapterConnectionStateCache() {
+ PropertyInvalidatedCache.invalidateCache(
+ BLUETOOTH_GET_ADAPTER_CONNECTION_STATE_CACHE_PROPERTY);
+ }
+
+ /**
+ * Get the current connection state of the local Bluetooth adapter.
+ * This can be used to check whether the local Bluetooth adapter is connected
+ * to any profile of any other remote Bluetooth Device.
+ *
+ * <p> Use this function along with {@link #ACTION_CONNECTION_STATE_CHANGED}
+ * intent to get the connection state of the adapter.
+ *
+ * @return One of {@link #STATE_CONNECTED}, {@link #STATE_DISCONNECTED}, {@link
+ * #STATE_CONNECTING} or {@link #STATE_DISCONNECTED}
+ * @hide
+ */
+ @UnsupportedAppUsage
+ @RequiresLegacyBluetoothPermission
+ @RequiresNoPermission
+ public int getConnectionState() {
+ if (getState() != STATE_ON) {
+ return BluetoothAdapter.STATE_DISCONNECTED;
+ }
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mBluetoothGetAdapterConnectionStateCache.query(null);
+ }
+ } catch (RuntimeException e) {
+ if (e.getCause() instanceof RemoteException) {
+ Log.e(TAG, "getConnectionState:", e.getCause());
+ } else {
+ throw e;
+ }
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return BluetoothAdapter.STATE_DISCONNECTED;
+ }
+
+ private static final String BLUETOOTH_PROFILE_CACHE_PROPERTY =
+ "cache_key.bluetooth.get_profile_connection_state";
+ private final PropertyInvalidatedCache<Integer, Integer>
+ mGetProfileConnectionStateCache =
+ new PropertyInvalidatedCache<Integer, Integer>(
+ 8, BLUETOOTH_PROFILE_CACHE_PROPERTY) {
+ @Override
+ @SuppressLint("AndroidFrameworkRequiresPermission")
+ protected Integer recompute(Integer query) {
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.getProfileConnectionState(query);
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "getProfileConnectionState:", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ return BluetoothProfile.STATE_DISCONNECTED;
+ }
+ @Override
+ public String queryToString(Integer query) {
+ return String.format("getProfileConnectionState(profile=\"%d\")",
+ query);
+ }
+ };
+
+ /** @hide */
+ @RequiresNoPermission
+ public void disableGetProfileConnectionStateCache() {
+ mGetProfileConnectionStateCache.disableLocal();
+ }
+
+ /** @hide */
+ public static void invalidateGetProfileConnectionStateCache() {
+ PropertyInvalidatedCache.invalidateCache(BLUETOOTH_PROFILE_CACHE_PROPERTY);
+ }
+
+ /**
+ * Get the current connection state of a profile.
+ * This function can be used to check whether the local Bluetooth adapter
+ * is connected to any remote device for a specific profile.
+ * Profile can be one of {@link BluetoothProfile#HEADSET}, {@link BluetoothProfile#A2DP}.
+ *
+ * <p> Return value can be one of
+ * {@link BluetoothProfile#STATE_DISCONNECTED},
+ * {@link BluetoothProfile#STATE_CONNECTING},
+ * {@link BluetoothProfile#STATE_CONNECTED},
+ * {@link BluetoothProfile#STATE_DISCONNECTING}
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ @SuppressLint("AndroidFrameworkRequiresPermission")
+ public int getProfileConnectionState(int profile) {
+ if (getState() != STATE_ON) {
+ return BluetoothProfile.STATE_DISCONNECTED;
+ }
+ return mGetProfileConnectionStateCache.query(new Integer(profile));
+ }
+
+ /**
+ * Create a listening, secure RFCOMM Bluetooth socket.
+ * <p>A remote device connecting to this socket will be authenticated and
+ * communication on this socket will be encrypted.
+ * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming
+ * connections from a listening {@link BluetoothServerSocket}.
+ * <p>Valid RFCOMM channels are in range 1 to 30.
+ *
+ * @param channel RFCOMM channel to listen on
+ * @return a listening RFCOMM BluetoothServerSocket
+ * @throws IOException on error, for example Bluetooth not available, or insufficient
+ * permissions, or channel in use.
+ * @hide
+ */
+ @RequiresLegacyBluetoothAdminPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public BluetoothServerSocket listenUsingRfcommOn(int channel) throws IOException {
+ return listenUsingRfcommOn(channel, false, false);
+ }
+
+ /**
+ * Create a listening, secure RFCOMM Bluetooth socket.
+ * <p>A remote device connecting to this socket will be authenticated and
+ * communication on this socket will be encrypted.
+ * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming
+ * connections from a listening {@link BluetoothServerSocket}.
+ * <p>Valid RFCOMM channels are in range 1 to 30.
+ * <p>To auto assign a channel without creating a SDP record use
+ * {@link #SOCKET_CHANNEL_AUTO_STATIC_NO_SDP} as channel number.
+ *
+ * @param channel RFCOMM channel to listen on
+ * @param mitm enforce person-in-the-middle protection for authentication.
+ * @param min16DigitPin enforce a pin key length og minimum 16 digit for sec mode 2
+ * connections.
+ * @return a listening RFCOMM BluetoothServerSocket
+ * @throws IOException on error, for example Bluetooth not available, or insufficient
+ * permissions, or channel in use.
+ * @hide
+ */
+ @UnsupportedAppUsage
+ @RequiresLegacyBluetoothAdminPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public BluetoothServerSocket listenUsingRfcommOn(int channel, boolean mitm,
+ boolean min16DigitPin) throws IOException {
+ BluetoothServerSocket socket =
+ new BluetoothServerSocket(BluetoothSocket.TYPE_RFCOMM, true, true, channel, mitm,
+ min16DigitPin);
+ int errno = socket.mSocket.bindListen();
+ if (channel == SOCKET_CHANNEL_AUTO_STATIC_NO_SDP) {
+ socket.setChannel(socket.mSocket.getPort());
+ }
+ if (errno != 0) {
+ //TODO(BT): Throw the same exception error code
+ // that the previous code was using.
+ //socket.mSocket.throwErrnoNative(errno);
+ throw new IOException("Error: " + errno);
+ }
+ return socket;
+ }
+
+ /**
+ * Create a listening, secure RFCOMM Bluetooth socket with Service Record.
+ * <p>A remote device connecting to this socket will be authenticated and
+ * communication on this socket will be encrypted.
+ * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming
+ * connections from a listening {@link BluetoothServerSocket}.
+ * <p>The system will assign an unused RFCOMM channel to listen on.
+ * <p>The system will also register a Service Discovery
+ * Protocol (SDP) record with the local SDP server containing the specified
+ * UUID, service name, and auto-assigned channel. Remote Bluetooth devices
+ * can use the same UUID to query our SDP server and discover which channel
+ * to connect to. This SDP record will be removed when this socket is
+ * closed, or if this application closes unexpectedly.
+ * <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to
+ * connect to this socket from another device using the same {@link UUID}.
+ *
+ * @param name service name for SDP record
+ * @param uuid uuid for SDP record
+ * @return a listening RFCOMM BluetoothServerSocket
+ * @throws IOException on error, for example Bluetooth not available, or insufficient
+ * permissions, or channel in use.
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public BluetoothServerSocket listenUsingRfcommWithServiceRecord(String name, UUID uuid)
+ throws IOException {
+ return createNewRfcommSocketAndRecord(name, uuid, true, true);
+ }
+
+ /**
+ * Create a listening, insecure RFCOMM Bluetooth socket with Service Record.
+ * <p>The link key is not required to be authenticated, i.e the communication may be
+ * vulnerable to Person In the Middle attacks. For Bluetooth 2.1 devices,
+ * the link will be encrypted, as encryption is mandatory.
+ * For legacy devices (pre Bluetooth 2.1 devices) the link will not
+ * be encrypted. Use {@link #listenUsingRfcommWithServiceRecord}, if an
+ * encrypted and authenticated communication channel is desired.
+ * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming
+ * connections from a listening {@link BluetoothServerSocket}.
+ * <p>The system will assign an unused RFCOMM channel to listen on.
+ * <p>The system will also register a Service Discovery
+ * Protocol (SDP) record with the local SDP server containing the specified
+ * UUID, service name, and auto-assigned channel. Remote Bluetooth devices
+ * can use the same UUID to query our SDP server and discover which channel
+ * to connect to. This SDP record will be removed when this socket is
+ * closed, or if this application closes unexpectedly.
+ * <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to
+ * connect to this socket from another device using the same {@link UUID}.
+ *
+ * @param name service name for SDP record
+ * @param uuid uuid for SDP record
+ * @return a listening RFCOMM BluetoothServerSocket
+ * @throws IOException on error, for example Bluetooth not available, or insufficient
+ * permissions, or channel in use.
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public BluetoothServerSocket listenUsingInsecureRfcommWithServiceRecord(String name, UUID uuid)
+ throws IOException {
+ return createNewRfcommSocketAndRecord(name, uuid, false, false);
+ }
+
+ /**
+ * Create a listening, encrypted,
+ * RFCOMM Bluetooth socket with Service Record.
+ * <p>The link will be encrypted, but the link key is not required to be authenticated
+ * i.e the communication is vulnerable to Person In the Middle attacks. Use
+ * {@link #listenUsingRfcommWithServiceRecord}, to ensure an authenticated link key.
+ * <p> Use this socket if authentication of link key is not possible.
+ * For example, for Bluetooth 2.1 devices, if any of the devices does not have
+ * an input and output capability or just has the ability to display a numeric key,
+ * a secure socket connection is not possible and this socket can be used.
+ * Use {@link #listenUsingInsecureRfcommWithServiceRecord}, if encryption is not required.
+ * For Bluetooth 2.1 devices, the link will be encrypted, as encryption is mandatory.
+ * For more details, refer to the Security Model section 5.2 (vol 3) of
+ * Bluetooth Core Specification version 2.1 + EDR.
+ * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming
+ * connections from a listening {@link BluetoothServerSocket}.
+ * <p>The system will assign an unused RFCOMM channel to listen on.
+ * <p>The system will also register a Service Discovery
+ * Protocol (SDP) record with the local SDP server containing the specified
+ * UUID, service name, and auto-assigned channel. Remote Bluetooth devices
+ * can use the same UUID to query our SDP server and discover which channel
+ * to connect to. This SDP record will be removed when this socket is
+ * closed, or if this application closes unexpectedly.
+ * <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to
+ * connect to this socket from another device using the same {@link UUID}.
+ *
+ * @param name service name for SDP record
+ * @param uuid uuid for SDP record
+ * @return a listening RFCOMM BluetoothServerSocket
+ * @throws IOException on error, for example Bluetooth not available, or insufficient
+ * permissions, or channel in use.
+ * @hide
+ */
+ @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public BluetoothServerSocket listenUsingEncryptedRfcommWithServiceRecord(String name, UUID uuid)
+ throws IOException {
+ return createNewRfcommSocketAndRecord(name, uuid, false, true);
+ }
+
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ private BluetoothServerSocket createNewRfcommSocketAndRecord(String name, UUID uuid,
+ boolean auth, boolean encrypt) throws IOException {
+ BluetoothServerSocket socket;
+ socket = new BluetoothServerSocket(BluetoothSocket.TYPE_RFCOMM, auth, encrypt,
+ new ParcelUuid(uuid));
+ socket.setServiceName(name);
+ int errno = socket.mSocket.bindListen();
+ if (errno != 0) {
+ //TODO(BT): Throw the same exception error code
+ // that the previous code was using.
+ //socket.mSocket.throwErrnoNative(errno);
+ throw new IOException("Error: " + errno);
+ }
+ return socket;
+ }
+
+ /**
+ * Construct an unencrypted, unauthenticated, RFCOMM server socket.
+ * Call #accept to retrieve connections to this socket.
+ *
+ * @return An RFCOMM BluetoothServerSocket
+ * @throws IOException On error, for example Bluetooth not available, or insufficient
+ * permissions.
+ * @hide
+ */
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public BluetoothServerSocket listenUsingInsecureRfcommOn(int port) throws IOException {
+ BluetoothServerSocket socket =
+ new BluetoothServerSocket(BluetoothSocket.TYPE_RFCOMM, false, false, port);
+ int errno = socket.mSocket.bindListen();
+ if (port == SOCKET_CHANNEL_AUTO_STATIC_NO_SDP) {
+ socket.setChannel(socket.mSocket.getPort());
+ }
+ if (errno != 0) {
+ //TODO(BT): Throw the same exception error code
+ // that the previous code was using.
+ //socket.mSocket.throwErrnoNative(errno);
+ throw new IOException("Error: " + errno);
+ }
+ return socket;
+ }
+
+ /**
+ * Construct an encrypted, authenticated, L2CAP server socket.
+ * Call #accept to retrieve connections to this socket.
+ * <p>To auto assign a port without creating a SDP record use
+ * {@link #SOCKET_CHANNEL_AUTO_STATIC_NO_SDP} as port number.
+ *
+ * @param port the PSM to listen on
+ * @param mitm enforce person-in-the-middle protection for authentication.
+ * @param min16DigitPin enforce a pin key length og minimum 16 digit for sec mode 2
+ * connections.
+ * @return An L2CAP BluetoothServerSocket
+ * @throws IOException On error, for example Bluetooth not available, or insufficient
+ * permissions.
+ * @hide
+ */
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public BluetoothServerSocket listenUsingL2capOn(int port, boolean mitm, boolean min16DigitPin)
+ throws IOException {
+ BluetoothServerSocket socket =
+ new BluetoothServerSocket(BluetoothSocket.TYPE_L2CAP, true, true, port, mitm,
+ min16DigitPin);
+ int errno = socket.mSocket.bindListen();
+ if (port == SOCKET_CHANNEL_AUTO_STATIC_NO_SDP) {
+ int assignedChannel = socket.mSocket.getPort();
+ if (DBG) Log.d(TAG, "listenUsingL2capOn: set assigned channel to " + assignedChannel);
+ socket.setChannel(assignedChannel);
+ }
+ if (errno != 0) {
+ //TODO(BT): Throw the same exception error code
+ // that the previous code was using.
+ //socket.mSocket.throwErrnoNative(errno);
+ throw new IOException("Error: " + errno);
+ }
+ return socket;
+ }
+
+ /**
+ * Construct an encrypted, authenticated, L2CAP server socket.
+ * Call #accept to retrieve connections to this socket.
+ * <p>To auto assign a port without creating a SDP record use
+ * {@link #SOCKET_CHANNEL_AUTO_STATIC_NO_SDP} as port number.
+ *
+ * @param port the PSM to listen on
+ * @return An L2CAP BluetoothServerSocket
+ * @throws IOException On error, for example Bluetooth not available, or insufficient
+ * permissions.
+ * @hide
+ */
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public BluetoothServerSocket listenUsingL2capOn(int port) throws IOException {
+ return listenUsingL2capOn(port, false, false);
+ }
+
+ /**
+ * Construct an insecure L2CAP server socket.
+ * Call #accept to retrieve connections to this socket.
+ * <p>To auto assign a port without creating a SDP record use
+ * {@link #SOCKET_CHANNEL_AUTO_STATIC_NO_SDP} as port number.
+ *
+ * @param port the PSM to listen on
+ * @return An L2CAP BluetoothServerSocket
+ * @throws IOException On error, for example Bluetooth not available, or insufficient
+ * permissions.
+ * @hide
+ */
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public BluetoothServerSocket listenUsingInsecureL2capOn(int port) throws IOException {
+ Log.d(TAG, "listenUsingInsecureL2capOn: port=" + port);
+ BluetoothServerSocket socket =
+ new BluetoothServerSocket(BluetoothSocket.TYPE_L2CAP, false, false, port, false,
+ false);
+ int errno = socket.mSocket.bindListen();
+ if (port == SOCKET_CHANNEL_AUTO_STATIC_NO_SDP) {
+ int assignedChannel = socket.mSocket.getPort();
+ if (DBG) {
+ Log.d(TAG, "listenUsingInsecureL2capOn: set assigned channel to "
+ + assignedChannel);
+ }
+ socket.setChannel(assignedChannel);
+ }
+ if (errno != 0) {
+ //TODO(BT): Throw the same exception error code
+ // that the previous code was using.
+ //socket.mSocket.throwErrnoNative(errno);
+ throw new IOException("Error: " + errno);
+ }
+ return socket;
+
+ }
+
+ /**
+ * Read the local Out of Band Pairing Data
+ *
+ * @return Pair<byte[], byte[]> of Hash and Randomizer
+ * @hide
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ @SuppressLint("AndroidFrameworkRequiresPermission")
+ public Pair<byte[], byte[]> readOutOfBandData() {
+ return null;
+ }
+
+ /**
+ * Get the profile proxy object associated with the profile.
+ *
+ * <p>Profile can be one of {@link BluetoothProfile#HEADSET}, {@link BluetoothProfile#A2DP},
+ * {@link BluetoothProfile#GATT}, {@link BluetoothProfile#HEARING_AID}, or {@link
+ * BluetoothProfile#GATT_SERVER}. Clients must implement {@link
+ * BluetoothProfile.ServiceListener} to get notified of the connection status and to get the
+ * proxy object.
+ *
+ * @param context Context of the application
+ * @param listener The service Listener for connection callbacks.
+ * @param profile The Bluetooth profile; either {@link BluetoothProfile#HEADSET},
+ * {@link BluetoothProfile#A2DP}, {@link BluetoothProfile#GATT}, {@link
+ * BluetoothProfile#HEARING_AID} or {@link BluetoothProfile#GATT_SERVER}.
+ * @return true on success, false on error
+ */
+ @SuppressLint({
+ "AndroidFrameworkRequiresPermission",
+ "AndroidFrameworkBluetoothPermission"
+ })
+ public boolean getProfileProxy(Context context, BluetoothProfile.ServiceListener listener,
+ int profile) {
+ if (context == null || listener == null) {
+ return false;
+ }
+
+ if (profile == BluetoothProfile.HEADSET) {
+ BluetoothHeadset headset = new BluetoothHeadset(context, listener, this);
+ return true;
+ } else if (profile == BluetoothProfile.A2DP) {
+ BluetoothA2dp a2dp = new BluetoothA2dp(context, listener, this);
+ return true;
+ } else if (profile == BluetoothProfile.A2DP_SINK) {
+ BluetoothA2dpSink a2dpSink = new BluetoothA2dpSink(context, listener, this);
+ return true;
+ } else if (profile == BluetoothProfile.AVRCP_CONTROLLER) {
+ BluetoothAvrcpController avrcp = new BluetoothAvrcpController(context, listener, this);
+ return true;
+ } else if (profile == BluetoothProfile.HID_HOST) {
+ BluetoothHidHost iDev = new BluetoothHidHost(context, listener, this);
+ return true;
+ } else if (profile == BluetoothProfile.PAN) {
+ BluetoothPan pan = new BluetoothPan(context, listener, this);
+ return true;
+ } else if (profile == BluetoothProfile.PBAP) {
+ BluetoothPbap pbap = new BluetoothPbap(context, listener, this);
+ return true;
+ } else if (profile == BluetoothProfile.HEALTH) {
+ Log.e(TAG, "getProfileProxy(): BluetoothHealth is deprecated");
+ return false;
+ } else if (profile == BluetoothProfile.MAP) {
+ BluetoothMap map = new BluetoothMap(context, listener, this);
+ return true;
+ } else if (profile == BluetoothProfile.HEADSET_CLIENT) {
+ BluetoothHeadsetClient headsetClient =
+ new BluetoothHeadsetClient(context, listener, this);
+ return true;
+ } else if (profile == BluetoothProfile.SAP) {
+ BluetoothSap sap = new BluetoothSap(context, listener, this);
+ return true;
+ } else if (profile == BluetoothProfile.PBAP_CLIENT) {
+ BluetoothPbapClient pbapClient = new BluetoothPbapClient(context, listener, this);
+ return true;
+ } else if (profile == BluetoothProfile.MAP_CLIENT) {
+ BluetoothMapClient mapClient = new BluetoothMapClient(context, listener, this);
+ return true;
+ } else if (profile == BluetoothProfile.HID_DEVICE) {
+ BluetoothHidDevice hidDevice = new BluetoothHidDevice(context, listener, this);
+ return true;
+ } else if (profile == BluetoothProfile.HEARING_AID) {
+ if (isHearingAidProfileSupported()) {
+ BluetoothHearingAid hearingAid = new BluetoothHearingAid(context, listener, this);
+ return true;
+ }
+ return false;
+ } else if (profile == BluetoothProfile.LE_AUDIO) {
+ BluetoothLeAudio leAudio = new BluetoothLeAudio(context, listener, this);
+ return true;
+ } else {
+ return false;
+ }
+ }
+
+ /**
+ * Close the connection of the profile proxy to the Service.
+ *
+ * <p> Clients should call this when they are no longer using
+ * the proxy obtained from {@link #getProfileProxy}.
+ * Profile can be one of {@link BluetoothProfile#HEADSET} or {@link BluetoothProfile#A2DP}
+ *
+ * @param profile
+ * @param proxy Profile proxy object
+ */
+ @SuppressLint({
+ "AndroidFrameworkRequiresPermission",
+ "AndroidFrameworkBluetoothPermission"
+ })
+ public void closeProfileProxy(int profile, BluetoothProfile proxy) {
+ if (proxy == null) {
+ return;
+ }
+
+ switch (profile) {
+ case BluetoothProfile.HEADSET:
+ BluetoothHeadset headset = (BluetoothHeadset) proxy;
+ headset.close();
+ break;
+ case BluetoothProfile.A2DP:
+ BluetoothA2dp a2dp = (BluetoothA2dp) proxy;
+ a2dp.close();
+ break;
+ case BluetoothProfile.A2DP_SINK:
+ BluetoothA2dpSink a2dpSink = (BluetoothA2dpSink) proxy;
+ a2dpSink.close();
+ break;
+ case BluetoothProfile.AVRCP_CONTROLLER:
+ BluetoothAvrcpController avrcp = (BluetoothAvrcpController) proxy;
+ avrcp.close();
+ break;
+ case BluetoothProfile.HID_HOST:
+ BluetoothHidHost iDev = (BluetoothHidHost) proxy;
+ iDev.close();
+ break;
+ case BluetoothProfile.PAN:
+ BluetoothPan pan = (BluetoothPan) proxy;
+ pan.close();
+ break;
+ case BluetoothProfile.PBAP:
+ BluetoothPbap pbap = (BluetoothPbap) proxy;
+ pbap.close();
+ break;
+ case BluetoothProfile.GATT:
+ BluetoothGatt gatt = (BluetoothGatt) proxy;
+ gatt.close();
+ break;
+ case BluetoothProfile.GATT_SERVER:
+ BluetoothGattServer gattServer = (BluetoothGattServer) proxy;
+ gattServer.close();
+ break;
+ case BluetoothProfile.MAP:
+ BluetoothMap map = (BluetoothMap) proxy;
+ map.close();
+ break;
+ case BluetoothProfile.HEADSET_CLIENT:
+ BluetoothHeadsetClient headsetClient = (BluetoothHeadsetClient) proxy;
+ headsetClient.close();
+ break;
+ case BluetoothProfile.SAP:
+ BluetoothSap sap = (BluetoothSap) proxy;
+ sap.close();
+ break;
+ case BluetoothProfile.PBAP_CLIENT:
+ BluetoothPbapClient pbapClient = (BluetoothPbapClient) proxy;
+ pbapClient.close();
+ break;
+ case BluetoothProfile.MAP_CLIENT:
+ BluetoothMapClient mapClient = (BluetoothMapClient) proxy;
+ mapClient.close();
+ break;
+ case BluetoothProfile.HID_DEVICE:
+ BluetoothHidDevice hidDevice = (BluetoothHidDevice) proxy;
+ hidDevice.close();
+ break;
+ case BluetoothProfile.HEARING_AID:
+ BluetoothHearingAid hearingAid = (BluetoothHearingAid) proxy;
+ hearingAid.close();
+ break;
+ case BluetoothProfile.LE_AUDIO:
+ BluetoothLeAudio leAudio = (BluetoothLeAudio) proxy;
+ leAudio.close();
+ }
+ }
+
+ private static final IBluetoothManagerCallback sManagerCallback =
+ new IBluetoothManagerCallback.Stub() {
+ public void onBluetoothServiceUp(IBluetooth bluetoothService) {
+ if (DBG) {
+ Log.d(TAG, "onBluetoothServiceUp: " + bluetoothService);
+ }
+
+ synchronized (sServiceLock) {
+ sService = bluetoothService;
+ for (IBluetoothManagerCallback cb : sProxyServiceStateCallbacks.keySet()) {
+ try {
+ if (cb != null) {
+ cb.onBluetoothServiceUp(bluetoothService);
+ } else {
+ Log.d(TAG, "onBluetoothServiceUp: cb is null!");
+ }
+ } catch (Exception e) {
+ Log.e(TAG, "", e);
+ }
+ }
+ }
+ }
+
+ public void onBluetoothServiceDown() {
+ if (DBG) {
+ Log.d(TAG, "onBluetoothServiceDown");
+ }
+
+ synchronized (sServiceLock) {
+ sService = null;
+ for (IBluetoothManagerCallback cb : sProxyServiceStateCallbacks.keySet()) {
+ try {
+ if (cb != null) {
+ cb.onBluetoothServiceDown();
+ } else {
+ Log.d(TAG, "onBluetoothServiceDown: cb is null!");
+ }
+ } catch (Exception e) {
+ Log.e(TAG, "", e);
+ }
+ }
+ }
+ }
+
+ public void onBrEdrDown() {
+ if (VDBG) {
+ Log.i(TAG, "onBrEdrDown");
+ }
+
+ synchronized (sServiceLock) {
+ for (IBluetoothManagerCallback cb : sProxyServiceStateCallbacks.keySet()) {
+ try {
+ if (cb != null) {
+ cb.onBrEdrDown();
+ } else {
+ Log.d(TAG, "onBrEdrDown: cb is null!");
+ }
+ } catch (Exception e) {
+ Log.e(TAG, "", e);
+ }
+ }
+ }
+ }
+ };
+
+ private final IBluetoothManagerCallback mManagerCallback =
+ new IBluetoothManagerCallback.Stub() {
+ public void onBluetoothServiceUp(IBluetooth bluetoothService) {
+ synchronized (mServiceLock.writeLock()) {
+ mService = bluetoothService;
+ }
+ synchronized (mMetadataListeners) {
+ mMetadataListeners.forEach((device, pair) -> {
+ try {
+ mService.registerMetadataListener(mBluetoothMetadataListener,
+ device, mAttributionSource);
+ } catch (RemoteException e) {
+ Log.e(TAG, "Failed to register metadata listener", e);
+ }
+ });
+ }
+ synchronized (mBluetoothConnectionCallbackExecutorMap) {
+ if (!mBluetoothConnectionCallbackExecutorMap.isEmpty()) {
+ try {
+ mService.registerBluetoothConnectionCallback(mConnectionCallback,
+ mAttributionSource);
+ } catch (RemoteException e) {
+ Log.e(TAG, "onBluetoothServiceUp: Failed to register bluetooth"
+ + "connection callback", e);
+ }
+ }
+ }
+ }
+
+ public void onBluetoothServiceDown() {
+ synchronized (mServiceLock.writeLock()) {
+ mService = null;
+ if (mLeScanClients != null) {
+ mLeScanClients.clear();
+ }
+ if (mBluetoothLeAdvertiser != null) {
+ mBluetoothLeAdvertiser.cleanup();
+ }
+ if (mBluetoothLeScanner != null) {
+ mBluetoothLeScanner.cleanup();
+ }
+ }
+ }
+
+ public void onBrEdrDown() {
+ }
+ };
+
+ /**
+ * Enable the Bluetooth Adapter, but don't auto-connect devices
+ * and don't persist state. Only for use by system applications.
+ *
+ * @hide
+ */
+ @SystemApi
+ @RequiresLegacyBluetoothAdminPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public boolean enableNoAutoConnect() {
+ if (isEnabled()) {
+ if (DBG) {
+ Log.d(TAG, "enableNoAutoConnect(): BT already enabled!");
+ }
+ return true;
+ }
+ try {
+ return mManagerService.enableNoAutoConnect(mAttributionSource);
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ }
+ return false;
+ }
+
+ /** @hide */
+ @Retention(RetentionPolicy.SOURCE)
+ @IntDef(value = {
+ BluetoothStatusCodes.ERROR_UNKNOWN,
+ BluetoothStatusCodes.ERROR_BLUETOOTH_NOT_ENABLED,
+ BluetoothStatusCodes.ERROR_ANOTHER_ACTIVE_OOB_REQUEST,
+ })
+ public @interface OobError {}
+
+ /**
+ * Provides callback methods for receiving {@link OobData} from the host stack, as well as an
+ * error interface in order to allow the caller to determine next steps based on the {@code
+ * ErrorCode}.
+ *
+ * @hide
+ */
+ @SystemApi
+ public interface OobDataCallback {
+ /**
+ * Handles the {@link OobData} received from the host stack.
+ *
+ * @param transport - whether the {@link OobData} is generated for LE or Classic.
+ * @param oobData - data generated in the host stack(LE) or controller (Classic)
+ */
+ void onOobData(@Transport int transport, @NonNull OobData oobData);
+
+ /**
+ * Provides feedback when things don't go as expected.
+ *
+ * @param errorCode - the code describing the type of error that occurred.
+ */
+ void onError(@OobError int errorCode);
+ }
+
+ /**
+ * Wraps an AIDL interface around an {@link OobDataCallback} interface.
+ *
+ * @see {@link IBluetoothOobDataCallback} for interface definition.
+ *
+ * @hide
+ */
+ public class WrappedOobDataCallback extends IBluetoothOobDataCallback.Stub {
+ private final OobDataCallback mCallback;
+ private final Executor mExecutor;
+
+ /**
+ * @param callback - object to receive {@link OobData} must be a non null argument
+ *
+ * @throws NullPointerException if the callback is null.
+ */
+ WrappedOobDataCallback(@NonNull OobDataCallback callback,
+ @NonNull @CallbackExecutor Executor executor) {
+ requireNonNull(callback);
+ requireNonNull(executor);
+ mCallback = callback;
+ mExecutor = executor;
+ }
+ /**
+ * Wrapper function to relay to the {@link OobDataCallback#onOobData}
+ *
+ * @param transport - whether the {@link OobData} is generated for LE or Classic.
+ * @param oobData - data generated in the host stack(LE) or controller (Classic)
+ *
+ * @hide
+ */
+ public void onOobData(@Transport int transport, @NonNull OobData oobData) {
+ mExecutor.execute(new Runnable() {
+ public void run() {
+ mCallback.onOobData(transport, oobData);
+ }
+ });
+ }
+ /**
+ * Wrapper function to relay to the {@link OobDataCallback#onError}
+ *
+ * @param errorCode - the code descibing the type of error that occurred.
+ *
+ * @hide
+ */
+ public void onError(@OobError int errorCode) {
+ mExecutor.execute(new Runnable() {
+ public void run() {
+ mCallback.onError(errorCode);
+ }
+ });
+ }
+ }
+
+ /**
+ * Fetches a secret data value that can be used for a secure and simple pairing experience.
+ *
+ * <p>This is the Local Out of Band data the comes from the
+ *
+ * <p>This secret is the local Out of Band data. This data is used to securely and quickly
+ * pair two devices with minimal user interaction.
+ *
+ * <p>For example, this secret can be transferred to a remote device out of band (meaning any
+ * other way besides using bluetooth). Once the remote device finds this device using the
+ * information given in the data, such as the PUBLIC ADDRESS, the remote device could then
+ * connect to this device using this secret when the pairing sequenece asks for the secret.
+ * This device will respond by automatically accepting the pairing due to the secret being so
+ * trustworthy.
+ *
+ * @param transport - provide type of transport (e.g. LE or Classic).
+ * @param callback - target object to receive the {@link OobData} value.
+ *
+ * @throws NullPointerException if callback is null.
+ * @throws IllegalArgumentException if the transport is not valid.
+ *
+ * @hide
+ */
+ @SystemApi
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(allOf = {
+ android.Manifest.permission.BLUETOOTH_CONNECT,
+ android.Manifest.permission.BLUETOOTH_PRIVILEGED,
+ })
+ public void generateLocalOobData(@Transport int transport,
+ @NonNull @CallbackExecutor Executor executor, @NonNull OobDataCallback callback) {
+ if (transport != BluetoothDevice.TRANSPORT_BREDR && transport
+ != BluetoothDevice.TRANSPORT_LE) {
+ throw new IllegalArgumentException("Invalid transport '" + transport + "'!");
+ }
+ requireNonNull(callback);
+ if (!isEnabled()) {
+ Log.w(TAG, "generateLocalOobData(): Adapter isn't enabled!");
+ callback.onError(BluetoothStatusCodes.ERROR_BLUETOOTH_NOT_ENABLED);
+ } else {
+ try {
+ mService.generateLocalOobData(transport, new WrappedOobDataCallback(callback,
+ executor), mAttributionSource);
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ }
+ }
+ }
+
+ /**
+ * Enable control of the Bluetooth Adapter for a single application.
+ *
+ * <p>Some applications need to use Bluetooth for short periods of time to
+ * transfer data but don't want all the associated implications like
+ * automatic connection to headsets etc.
+ *
+ * <p> Multiple applications can call this. This is reference counted and
+ * Bluetooth disabled only when no one else is using it. There will be no UI
+ * shown to the user while bluetooth is being enabled. Any user action will
+ * override this call. For example, if user wants Bluetooth on and the last
+ * user of this API wanted to disable Bluetooth, Bluetooth will not be
+ * turned off.
+ *
+ * <p> This API is only meant to be used by internal applications. Third
+ * party applications but use {@link #enable} and {@link #disable} APIs.
+ *
+ * <p> If this API returns true, it means the callback will be called.
+ * The callback will be called with the current state of Bluetooth.
+ * If the state is not what was requested, an internal error would be the
+ * reason. If Bluetooth is already on and if this function is called to turn
+ * it on, the api will return true and a callback will be called.
+ *
+ * @param on True for on, false for off.
+ * @param callback The callback to notify changes to the state.
+ * @hide
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ @SuppressLint("AndroidFrameworkRequiresPermission")
+ public boolean changeApplicationBluetoothState(boolean on,
+ BluetoothStateChangeCallback callback) {
+ return false;
+ }
+
+ /**
+ * @hide
+ */
+ public interface BluetoothStateChangeCallback {
+ /**
+ * @hide
+ */
+ void onBluetoothStateChange(boolean on);
+ }
+
+ /**
+ * @hide
+ */
+ public class StateChangeCallbackWrapper extends IBluetoothStateChangeCallback.Stub {
+ private BluetoothStateChangeCallback mCallback;
+
+ StateChangeCallbackWrapper(BluetoothStateChangeCallback callback) {
+ mCallback = callback;
+ }
+
+ @Override
+ public void onBluetoothStateChange(boolean on) {
+ mCallback.onBluetoothStateChange(on);
+ }
+ }
+
+ private Set<BluetoothDevice> toDeviceSet(List<BluetoothDevice> devices) {
+ Set<BluetoothDevice> deviceSet = new HashSet<BluetoothDevice>(devices);
+ return Collections.unmodifiableSet(deviceSet);
+ }
+
+ protected void finalize() throws Throwable {
+ try {
+ removeServiceStateCallback(mManagerCallback);
+ } finally {
+ super.finalize();
+ }
+ }
+
+ /**
+ * Validate a String Bluetooth address, such as "00:43:A8:23:10:F0"
+ * <p>Alphabetic characters must be uppercase to be valid.
+ *
+ * @param address Bluetooth address as string
+ * @return true if the address is valid, false otherwise
+ */
+ public static boolean checkBluetoothAddress(String address) {
+ if (address == null || address.length() != ADDRESS_LENGTH) {
+ return false;
+ }
+ for (int i = 0; i < ADDRESS_LENGTH; i++) {
+ char c = address.charAt(i);
+ switch (i % 3) {
+ case 0:
+ case 1:
+ if ((c >= '0' && c <= '9') || (c >= 'A' && c <= 'F')) {
+ // hex character, OK
+ break;
+ }
+ return false;
+ case 2:
+ if (c == ':') {
+ break; // OK
+ }
+ return false;
+ }
+ }
+ return true;
+ }
+
+ /**
+ * Determines whether a String Bluetooth address, such as "F0:43:A8:23:10:00"
+ * is a RANDOM STATIC address.
+ *
+ * RANDOM STATIC: (addr & 0xC0) == 0xC0
+ * RANDOM RESOLVABLE: (addr & 0xC0) == 0x40
+ * RANDOM non-RESOLVABLE: (addr & 0xC0) == 0x00
+ *
+ * @param address Bluetooth address as string
+ * @return true if the 2 Most Significant Bits of the address equals 0xC0.
+ *
+ * @hide
+ */
+ public static boolean isAddressRandomStatic(@NonNull String address) {
+ requireNonNull(address);
+ return checkBluetoothAddress(address)
+ && (Integer.parseInt(address.split(":")[0], 16) & 0xC0) == 0xC0;
+ }
+
+ /** {@hide} */
+ @UnsupportedAppUsage
+ @RequiresNoPermission
+ public IBluetoothManager getBluetoothManager() {
+ return mManagerService;
+ }
+
+ /** {@hide} */
+ @RequiresNoPermission
+ public AttributionSource getAttributionSource() {
+ return mAttributionSource;
+ }
+
+ @GuardedBy("sServiceLock")
+ private static final WeakHashMap<IBluetoothManagerCallback, Void> sProxyServiceStateCallbacks =
+ new WeakHashMap<>();
+
+ /*package*/ IBluetooth getBluetoothService() {
+ synchronized (sServiceLock) {
+ if (sProxyServiceStateCallbacks.isEmpty()) {
+ throw new IllegalStateException(
+ "Anonymous service access requires at least one lifecycle in process");
+ }
+ return sService;
+ }
+ }
+
+ @UnsupportedAppUsage
+ /*package*/ IBluetooth getBluetoothService(IBluetoothManagerCallback cb) {
+ Objects.requireNonNull(cb);
+ synchronized (sServiceLock) {
+ sProxyServiceStateCallbacks.put(cb, null);
+ registerOrUnregisterAdapterLocked();
+ return sService;
+ }
+ }
+
+ /*package*/ void removeServiceStateCallback(IBluetoothManagerCallback cb) {
+ Objects.requireNonNull(cb);
+ synchronized (sServiceLock) {
+ sProxyServiceStateCallbacks.remove(cb);
+ registerOrUnregisterAdapterLocked();
+ }
+ }
+
+ /**
+ * Handle registering (or unregistering) a single process-wide
+ * {@link IBluetoothManagerCallback} based on the presence of local
+ * {@link #sProxyServiceStateCallbacks} clients.
+ */
+ @GuardedBy("sServiceLock")
+ private void registerOrUnregisterAdapterLocked() {
+ final boolean isRegistered = sServiceRegistered;
+ final boolean wantRegistered = !sProxyServiceStateCallbacks.isEmpty();
+
+ if (isRegistered != wantRegistered) {
+ if (wantRegistered) {
+ try {
+ sService = mManagerService.registerAdapter(sManagerCallback);
+ } catch (RemoteException e) {
+ throw e.rethrowFromSystemServer();
+ }
+ } else {
+ try {
+ mManagerService.unregisterAdapter(sManagerCallback);
+ sService = null;
+ } catch (RemoteException e) {
+ throw e.rethrowFromSystemServer();
+ }
+ }
+ sServiceRegistered = wantRegistered;
+ }
+ }
+
+ /**
+ * Callback interface used to deliver LE scan results.
+ *
+ * @see #startLeScan(LeScanCallback)
+ * @see #startLeScan(UUID[], LeScanCallback)
+ */
+ public interface LeScanCallback {
+ /**
+ * Callback reporting an LE device found during a device scan initiated
+ * by the {@link BluetoothAdapter#startLeScan} function.
+ *
+ * @param device Identifies the remote device
+ * @param rssi The RSSI value for the remote device as reported by the Bluetooth hardware. 0
+ * if no RSSI value is available.
+ * @param scanRecord The content of the advertisement record offered by the remote device.
+ */
+ void onLeScan(BluetoothDevice device, int rssi, byte[] scanRecord);
+ }
+
+ /**
+ * Register a callback to receive events whenever the bluetooth stack goes down and back up,
+ * e.g. in the event the bluetooth is turned off/on via settings.
+ *
+ * If the bluetooth stack is currently up, there will not be an initial callback call.
+ * You can use the return value as an indication of this being the case.
+ *
+ * Callbacks will be delivered on a binder thread.
+ *
+ * @return whether bluetooth is already up currently
+ *
+ * @hide
+ */
+ public boolean registerServiceLifecycleCallback(ServiceLifecycleCallback callback) {
+ return getBluetoothService(callback.mRemote) != null;
+ }
+
+ /**
+ * Unregister a callback registered via {@link #registerServiceLifecycleCallback}
+ *
+ * @hide
+ */
+ public void unregisterServiceLifecycleCallback(ServiceLifecycleCallback callback) {
+ removeServiceStateCallback(callback.mRemote);
+ }
+
+ /**
+ * A callback for {@link #registerServiceLifecycleCallback}
+ *
+ * @hide
+ */
+ public abstract static class ServiceLifecycleCallback {
+
+ /** Called when the bluetooth stack is up */
+ public abstract void onBluetoothServiceUp();
+
+ /** Called when the bluetooth stack is down */
+ public abstract void onBluetoothServiceDown();
+
+ IBluetoothManagerCallback mRemote = new IBluetoothManagerCallback.Stub() {
+ @Override
+ public void onBluetoothServiceUp(IBluetooth bluetoothService) {
+ ServiceLifecycleCallback.this.onBluetoothServiceUp();
+ }
+
+ @Override
+ public void onBluetoothServiceDown() {
+ ServiceLifecycleCallback.this.onBluetoothServiceDown();
+ }
+
+ @Override
+ public void onBrEdrDown() {}
+ };
+ }
+
+ /**
+ * Starts a scan for Bluetooth LE devices.
+ *
+ * <p>Results of the scan are reported using the
+ * {@link LeScanCallback#onLeScan} callback.
+ *
+ * @param callback the callback LE scan results are delivered
+ * @return true, if the scan was started successfully
+ * @deprecated use {@link BluetoothLeScanner#startScan(List, ScanSettings, ScanCallback)}
+ * instead.
+ */
+ @Deprecated
+ @RequiresLegacyBluetoothAdminPermission
+ @RequiresBluetoothScanPermission
+ @RequiresBluetoothLocationPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_SCAN)
+ public boolean startLeScan(LeScanCallback callback) {
+ return startLeScan(null, callback);
+ }
+
+ /**
+ * Starts a scan for Bluetooth LE devices, looking for devices that
+ * advertise given services.
+ *
+ * <p>Devices which advertise all specified services are reported using the
+ * {@link LeScanCallback#onLeScan} callback.
+ *
+ * @param serviceUuids Array of services to look for
+ * @param callback the callback LE scan results are delivered
+ * @return true, if the scan was started successfully
+ * @deprecated use {@link BluetoothLeScanner#startScan(List, ScanSettings, ScanCallback)}
+ * instead.
+ */
+ @Deprecated
+ @RequiresLegacyBluetoothAdminPermission
+ @RequiresBluetoothScanPermission
+ @RequiresBluetoothLocationPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_SCAN)
+ public boolean startLeScan(final UUID[] serviceUuids, final LeScanCallback callback) {
+ if (DBG) {
+ Log.d(TAG, "startLeScan(): " + Arrays.toString(serviceUuids));
+ }
+ if (callback == null) {
+ if (DBG) {
+ Log.e(TAG, "startLeScan: null callback");
+ }
+ return false;
+ }
+ BluetoothLeScanner scanner = getBluetoothLeScanner();
+ if (scanner == null) {
+ if (DBG) {
+ Log.e(TAG, "startLeScan: cannot get BluetoothLeScanner");
+ }
+ return false;
+ }
+
+ synchronized (mLeScanClients) {
+ if (mLeScanClients.containsKey(callback)) {
+ if (DBG) {
+ Log.e(TAG, "LE Scan has already started");
+ }
+ return false;
+ }
+
+ try {
+ IBluetoothGatt iGatt = mManagerService.getBluetoothGatt();
+ if (iGatt == null) {
+ // BLE is not supported
+ return false;
+ }
+
+ @SuppressLint("AndroidFrameworkBluetoothPermission")
+ ScanCallback scanCallback = new ScanCallback() {
+ @Override
+ public void onScanResult(int callbackType, ScanResult result) {
+ if (callbackType != ScanSettings.CALLBACK_TYPE_ALL_MATCHES) {
+ // Should not happen.
+ Log.e(TAG, "LE Scan has already started");
+ return;
+ }
+ ScanRecord scanRecord = result.getScanRecord();
+ if (scanRecord == null) {
+ return;
+ }
+ if (serviceUuids != null) {
+ List<ParcelUuid> uuids = new ArrayList<ParcelUuid>();
+ for (UUID uuid : serviceUuids) {
+ uuids.add(new ParcelUuid(uuid));
+ }
+ List<ParcelUuid> scanServiceUuids = scanRecord.getServiceUuids();
+ if (scanServiceUuids == null || !scanServiceUuids.containsAll(uuids)) {
+ if (DBG) {
+ Log.d(TAG, "uuids does not match");
+ }
+ return;
+ }
+ }
+ callback.onLeScan(result.getDevice(), result.getRssi(),
+ scanRecord.getBytes());
+ }
+ };
+ ScanSettings settings = new ScanSettings.Builder().setCallbackType(
+ ScanSettings.CALLBACK_TYPE_ALL_MATCHES)
+ .setScanMode(ScanSettings.SCAN_MODE_LOW_LATENCY)
+ .build();
+
+ List<ScanFilter> filters = new ArrayList<ScanFilter>();
+ if (serviceUuids != null && serviceUuids.length > 0) {
+ // Note scan filter does not support matching an UUID array so we put one
+ // UUID to hardware and match the whole array in callback.
+ ScanFilter filter =
+ new ScanFilter.Builder().setServiceUuid(new ParcelUuid(serviceUuids[0]))
+ .build();
+ filters.add(filter);
+ }
+ scanner.startScan(filters, settings, scanCallback);
+
+ mLeScanClients.put(callback, scanCallback);
+ return true;
+
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ }
+ }
+ return false;
+ }
+
+ /**
+ * Stops an ongoing Bluetooth LE device scan.
+ *
+ * @param callback used to identify which scan to stop must be the same handle used to start the
+ * scan
+ * @deprecated Use {@link BluetoothLeScanner#stopScan(ScanCallback)} instead.
+ */
+ @Deprecated
+ @RequiresLegacyBluetoothAdminPermission
+ @RequiresBluetoothScanPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_SCAN)
+ public void stopLeScan(LeScanCallback callback) {
+ if (DBG) {
+ Log.d(TAG, "stopLeScan()");
+ }
+ BluetoothLeScanner scanner = getBluetoothLeScanner();
+ if (scanner == null) {
+ return;
+ }
+ synchronized (mLeScanClients) {
+ ScanCallback scanCallback = mLeScanClients.remove(callback);
+ if (scanCallback == null) {
+ if (DBG) {
+ Log.d(TAG, "scan not started yet");
+ }
+ return;
+ }
+ scanner.stopScan(scanCallback);
+ }
+ }
+
+ /**
+ * Create a secure L2CAP Connection-oriented Channel (CoC) {@link BluetoothServerSocket} and
+ * assign a dynamic protocol/service multiplexer (PSM) value. This socket can be used to listen
+ * for incoming connections. The supported Bluetooth transport is LE only.
+ * <p>A remote device connecting to this socket will be authenticated and communication on this
+ * socket will be encrypted.
+ * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming connections from a listening
+ * {@link BluetoothServerSocket}.
+ * <p>The system will assign a dynamic PSM value. This PSM value can be read from the {@link
+ * BluetoothServerSocket#getPsm()} and this value will be released when this server socket is
+ * closed, Bluetooth is turned off, or the application exits unexpectedly.
+ * <p>The mechanism of disclosing the assigned dynamic PSM value to the initiating peer is
+ * defined and performed by the application.
+ * <p>Use {@link BluetoothDevice#createL2capChannel(int)} to connect to this server
+ * socket from another Android device that is given the PSM value.
+ *
+ * @return an L2CAP CoC BluetoothServerSocket
+ * @throws IOException on error, for example Bluetooth not available, or insufficient
+ * permissions, or unable to start this CoC
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public @NonNull BluetoothServerSocket listenUsingL2capChannel()
+ throws IOException {
+ BluetoothServerSocket socket =
+ new BluetoothServerSocket(BluetoothSocket.TYPE_L2CAP_LE, true, true,
+ SOCKET_CHANNEL_AUTO_STATIC_NO_SDP, false, false);
+ int errno = socket.mSocket.bindListen();
+ if (errno != 0) {
+ throw new IOException("Error: " + errno);
+ }
+
+ int assignedPsm = socket.mSocket.getPort();
+ if (assignedPsm == 0) {
+ throw new IOException("Error: Unable to assign PSM value");
+ }
+ if (DBG) {
+ Log.d(TAG, "listenUsingL2capChannel: set assigned PSM to "
+ + assignedPsm);
+ }
+ socket.setChannel(assignedPsm);
+
+ return socket;
+ }
+
+ /**
+ * Create an insecure L2CAP Connection-oriented Channel (CoC) {@link BluetoothServerSocket} and
+ * assign a dynamic PSM value. This socket can be used to listen for incoming connections. The
+ * supported Bluetooth transport is LE only.
+ * <p>The link key is not required to be authenticated, i.e the communication may be vulnerable
+ * to person-in-the-middle attacks. Use {@link #listenUsingL2capChannel}, if an encrypted and
+ * authenticated communication channel is desired.
+ * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming connections from a listening
+ * {@link BluetoothServerSocket}.
+ * <p>The system will assign a dynamic protocol/service multiplexer (PSM) value. This PSM value
+ * can be read from the {@link BluetoothServerSocket#getPsm()} and this value will be released
+ * when this server socket is closed, Bluetooth is turned off, or the application exits
+ * unexpectedly.
+ * <p>The mechanism of disclosing the assigned dynamic PSM value to the initiating peer is
+ * defined and performed by the application.
+ * <p>Use {@link BluetoothDevice#createInsecureL2capChannel(int)} to connect to this server
+ * socket from another Android device that is given the PSM value.
+ *
+ * @return an L2CAP CoC BluetoothServerSocket
+ * @throws IOException on error, for example Bluetooth not available, or insufficient
+ * permissions, or unable to start this CoC
+ */
+ @RequiresLegacyBluetoothPermission
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
+ public @NonNull BluetoothServerSocket listenUsingInsecureL2capChannel()
+ throws IOException {
+ BluetoothServerSocket socket =
+ new BluetoothServerSocket(BluetoothSocket.TYPE_L2CAP_LE, false, false,
+ SOCKET_CHANNEL_AUTO_STATIC_NO_SDP, false, false);
+ int errno = socket.mSocket.bindListen();
+ if (errno != 0) {
+ throw new IOException("Error: " + errno);
+ }
+
+ int assignedPsm = socket.mSocket.getPort();
+ if (assignedPsm == 0) {
+ throw new IOException("Error: Unable to assign PSM value");
+ }
+ if (DBG) {
+ Log.d(TAG, "listenUsingInsecureL2capChannel: set assigned PSM to "
+ + assignedPsm);
+ }
+ socket.setChannel(assignedPsm);
+
+ return socket;
+ }
+
+ /**
+ * Register a {@link #OnMetadataChangedListener} to receive update about metadata
+ * changes for this {@link BluetoothDevice}.
+ * Registration must be done when Bluetooth is ON and will last until
+ * {@link #removeOnMetadataChangedListener(BluetoothDevice)} is called, even when Bluetooth
+ * restarted in the middle.
+ * All input parameters should not be null or {@link NullPointerException} will be triggered.
+ * The same {@link BluetoothDevice} and {@link #OnMetadataChangedListener} pair can only be
+ * registered once, double registration would cause {@link IllegalArgumentException}.
+ *
+ * @param device {@link BluetoothDevice} that will be registered
+ * @param executor the executor for listener callback
+ * @param listener {@link #OnMetadataChangedListener} that will receive asynchronous callbacks
+ * @return true on success, false on error
+ * @throws NullPointerException If one of {@code listener}, {@code device} or {@code executor}
+ * is null.
+ * @throws IllegalArgumentException The same {@link #OnMetadataChangedListener} and
+ * {@link BluetoothDevice} are registered twice.
+ * @hide
+ */
+ @SystemApi
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(allOf = {
+ android.Manifest.permission.BLUETOOTH_CONNECT,
+ android.Manifest.permission.BLUETOOTH_PRIVILEGED,
+ })
+ public boolean addOnMetadataChangedListener(@NonNull BluetoothDevice device,
+ @NonNull Executor executor, @NonNull OnMetadataChangedListener listener) {
+ if (DBG) Log.d(TAG, "addOnMetadataChangedListener()");
+
+ final IBluetooth service = mService;
+ if (service == null) {
+ Log.e(TAG, "Bluetooth is not enabled. Cannot register metadata listener");
+ return false;
+ }
+ if (listener == null) {
+ throw new NullPointerException("listener is null");
+ }
+ if (device == null) {
+ throw new NullPointerException("device is null");
+ }
+ if (executor == null) {
+ throw new NullPointerException("executor is null");
+ }
+
+ synchronized (mMetadataListeners) {
+ List<Pair<OnMetadataChangedListener, Executor>> listenerList =
+ mMetadataListeners.get(device);
+ if (listenerList == null) {
+ // Create new listener/executor list for registeration
+ listenerList = new ArrayList<>();
+ mMetadataListeners.put(device, listenerList);
+ } else {
+ // Check whether this device was already registed by the lisenter
+ if (listenerList.stream().anyMatch((pair) -> (pair.first.equals(listener)))) {
+ throw new IllegalArgumentException("listener was already regestered"
+ + " for the device");
+ }
+ }
+
+ Pair<OnMetadataChangedListener, Executor> listenerPair = new Pair(listener, executor);
+ listenerList.add(listenerPair);
+
+ boolean ret = false;
+ try {
+ ret = service.registerMetadataListener(mBluetoothMetadataListener, device,
+ mAttributionSource);
+ } catch (RemoteException e) {
+ Log.e(TAG, "registerMetadataListener fail", e);
+ } finally {
+ if (!ret) {
+ // Remove listener registered earlier when fail.
+ listenerList.remove(listenerPair);
+ if (listenerList.isEmpty()) {
+ // Remove the device if its listener list is empty
+ mMetadataListeners.remove(device);
+ }
+ }
+ }
+ return ret;
+ }
+ }
+
+ /**
+ * Unregister a {@link #OnMetadataChangedListener} from a registered {@link BluetoothDevice}.
+ * Unregistration can be done when Bluetooth is either ON or OFF.
+ * {@link #addOnMetadataChangedListener(OnMetadataChangedListener, BluetoothDevice, Executor)}
+ * must be called before unregisteration.
+ *
+ * @param device {@link BluetoothDevice} that will be unregistered. It
+ * should not be null or {@link NullPointerException} will be triggered.
+ * @param listener {@link OnMetadataChangedListener} that will be unregistered. It
+ * should not be null or {@link NullPointerException} will be triggered.
+ * @return true on success, false on error
+ * @throws NullPointerException If {@code listener} or {@code device} is null.
+ * @throws IllegalArgumentException If {@code device} has not been registered before.
+ * @hide
+ */
+ @SystemApi
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(allOf = {
+ android.Manifest.permission.BLUETOOTH_CONNECT,
+ android.Manifest.permission.BLUETOOTH_PRIVILEGED,
+ })
+ public boolean removeOnMetadataChangedListener(@NonNull BluetoothDevice device,
+ @NonNull OnMetadataChangedListener listener) {
+ if (DBG) Log.d(TAG, "removeOnMetadataChangedListener()");
+ if (device == null) {
+ throw new NullPointerException("device is null");
+ }
+ if (listener == null) {
+ throw new NullPointerException("listener is null");
+ }
+
+ synchronized (mMetadataListeners) {
+ if (!mMetadataListeners.containsKey(device)) {
+ throw new IllegalArgumentException("device was not registered");
+ }
+ // Remove issued listener from the registered device
+ mMetadataListeners.get(device).removeIf((pair) -> (pair.first.equals(listener)));
+
+ if (mMetadataListeners.get(device).isEmpty()) {
+ // Unregister to Bluetooth service if all listeners are removed from
+ // the registered device
+ mMetadataListeners.remove(device);
+ final IBluetooth service = mService;
+ if (service == null) {
+ // Bluetooth is OFF, do nothing to Bluetooth service.
+ return true;
+ }
+ try {
+ return service.unregisterMetadataListener(device, mAttributionSource);
+ } catch (RemoteException e) {
+ Log.e(TAG, "unregisterMetadataListener fail", e);
+ return false;
+ }
+ }
+ }
+ return true;
+ }
+
+ /**
+ * This interface is used to implement {@link BluetoothAdapter} metadata listener.
+ * @hide
+ */
+ @SystemApi
+ public interface OnMetadataChangedListener {
+ /**
+ * Callback triggered if the metadata of {@link BluetoothDevice} registered in
+ * {@link #addOnMetadataChangedListener}.
+ *
+ * @param device changed {@link BluetoothDevice}.
+ * @param key changed metadata key, one of BluetoothDevice.METADATA_*.
+ * @param value the new value of metadata as byte array.
+ */
+ void onMetadataChanged(@NonNull BluetoothDevice device, int key,
+ @Nullable byte[] value);
+ }
+
+ @SuppressLint("AndroidFrameworkBluetoothPermission")
+ private final IBluetoothConnectionCallback mConnectionCallback =
+ new IBluetoothConnectionCallback.Stub() {
+ @Override
+ public void onDeviceConnected(BluetoothDevice device) {
+ Attributable.setAttributionSource(device, mAttributionSource);
+ for (Map.Entry<BluetoothConnectionCallback, Executor> callbackExecutorEntry:
+ mBluetoothConnectionCallbackExecutorMap.entrySet()) {
+ BluetoothConnectionCallback callback = callbackExecutorEntry.getKey();
+ Executor executor = callbackExecutorEntry.getValue();
+ executor.execute(() -> callback.onDeviceConnected(device));
+ }
+ }
+
+ @Override
+ public void onDeviceDisconnected(BluetoothDevice device, int hciReason) {
+ Attributable.setAttributionSource(device, mAttributionSource);
+ for (Map.Entry<BluetoothConnectionCallback, Executor> callbackExecutorEntry:
+ mBluetoothConnectionCallbackExecutorMap.entrySet()) {
+ BluetoothConnectionCallback callback = callbackExecutorEntry.getKey();
+ Executor executor = callbackExecutorEntry.getValue();
+ executor.execute(() -> callback.onDeviceDisconnected(device, hciReason));
+ }
+ }
+ };
+
+ /**
+ * Registers the BluetoothConnectionCallback to receive callback events when a bluetooth device
+ * (classic or low energy) is connected or disconnected.
+ *
+ * @param executor is the callback executor
+ * @param callback is the connection callback you wish to register
+ * @return true if the callback was registered successfully, false otherwise
+ * @throws IllegalArgumentException if the callback is already registered
+ * @hide
+ */
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(allOf = {
+ android.Manifest.permission.BLUETOOTH_CONNECT,
+ android.Manifest.permission.BLUETOOTH_PRIVILEGED,
+ })
+ public boolean registerBluetoothConnectionCallback(@NonNull @CallbackExecutor Executor executor,
+ @NonNull BluetoothConnectionCallback callback) {
+ if (DBG) Log.d(TAG, "registerBluetoothConnectionCallback()");
+ if (callback == null) {
+ return false;
+ }
+
+ synchronized (mBluetoothConnectionCallbackExecutorMap) {
+ // If the callback map is empty, we register the service-to-app callback
+ if (mBluetoothConnectionCallbackExecutorMap.isEmpty()) {
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ if (!mService.registerBluetoothConnectionCallback(mConnectionCallback,
+ mAttributionSource)) {
+ return false;
+ }
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ mBluetoothConnectionCallbackExecutorMap.remove(callback);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+ }
+
+ // Adds the passed in callback to our map of callbacks to executors
+ if (mBluetoothConnectionCallbackExecutorMap.containsKey(callback)) {
+ throw new IllegalArgumentException("This callback has already been registered");
+ }
+ mBluetoothConnectionCallbackExecutorMap.put(callback, executor);
+ }
+
+ return true;
+ }
+
+ /**
+ * Unregisters the BluetoothConnectionCallback that was previously registered by the application
+ *
+ * @param callback is the connection callback you wish to unregister
+ * @return true if the callback was unregistered successfully, false otherwise
+ * @hide
+ */
+ @RequiresBluetoothConnectPermission
+ @RequiresPermission(allOf = {
+ android.Manifest.permission.BLUETOOTH_CONNECT,
+ android.Manifest.permission.BLUETOOTH_PRIVILEGED,
+ })
+ public boolean unregisterBluetoothConnectionCallback(
+ @NonNull BluetoothConnectionCallback callback) {
+ if (DBG) Log.d(TAG, "unregisterBluetoothConnectionCallback()");
+ if (callback == null) {
+ return false;
+ }
+
+ synchronized (mBluetoothConnectionCallbackExecutorMap) {
+ if (mBluetoothConnectionCallbackExecutorMap.remove(callback) != null) {
+ return false;
+ }
+ }
+
+ if (!mBluetoothConnectionCallbackExecutorMap.isEmpty()) {
+ return true;
+ }
+
+ // If the callback map is empty, we unregister the service-to-app callback
+ try {
+ mServiceLock.readLock().lock();
+ if (mService != null) {
+ return mService.unregisterBluetoothConnectionCallback(mConnectionCallback,
+ mAttributionSource);
+ }
+ } catch (RemoteException e) {
+ Log.e(TAG, "", e);
+ } finally {
+ mServiceLock.readLock().unlock();
+ }
+
+ return false;
+ }
+
+ /**
+ * This abstract class is used to implement callbacks for when a bluetooth classic or Bluetooth
+ * Low Energy (BLE) device is either connected or disconnected.
+ *
+ * @hide
+ */
+ public abstract static class BluetoothConnectionCallback {
+ /**
+ * Callback triggered when a bluetooth device (classic or BLE) is connected
+ * @param device is the connected bluetooth device
+ */
+ public void onDeviceConnected(BluetoothDevice device) {}
+
+ /**
+ * Callback triggered when a bluetooth device (classic or BLE) is disconnected
+ * @param device is the disconnected bluetooth device
+ * @param reason is the disconnect reason
+ */
+ public void onDeviceDisconnected(BluetoothDevice device, @DisconnectReason int reason) {}
+
+ /**
+ * @hide
+ */
+ @Retention(RetentionPolicy.SOURCE)
+ @IntDef(prefix = { "REASON_" }, value = {
+ BluetoothStatusCodes.ERROR_UNKNOWN,
+ BluetoothStatusCodes.ERROR_DISCONNECT_REASON_LOCAL_REQUEST,
+ BluetoothStatusCodes.ERROR_DISCONNECT_REASON_REMOTE_REQUEST,
+ BluetoothStatusCodes.ERROR_DISCONNECT_REASON_LOCAL,
+ BluetoothStatusCodes.ERROR_DISCONNECT_REASON_REMOTE,
+ BluetoothStatusCodes.ERROR_DISCONNECT_REASON_TIMEOUT,
+ BluetoothStatusCodes.ERROR_DISCONNECT_REASON_SECURITY,
+ BluetoothStatusCodes.ERROR_DISCONNECT_REASON_SYSTEM_POLICY,
+ BluetoothStatusCodes.ERROR_DISCONNECT_REASON_RESOURCE_LIMIT_REACHED,
+ BluetoothStatusCodes.ERROR_DISCONNECT_REASON_CONNECTION_ALREADY_EXISTS,
+ BluetoothStatusCodes.ERROR_DISCONNECT_REASON_BAD_PARAMETERS})
+ public @interface DisconnectReason {}
+
+ /**
+ * Returns human-readable strings corresponding to {@link DisconnectReason}.
+ */
+ public static String disconnectReasonText(@DisconnectReason int reason) {
+ switch (reason) {
+ case BluetoothStatusCodes.ERROR_UNKNOWN:
+ return "Reason unknown";
+ case BluetoothStatusCodes.ERROR_DISCONNECT_REASON_LOCAL_REQUEST:
+ return "Local request";
+ case BluetoothStatusCodes.ERROR_DISCONNECT_REASON_REMOTE_REQUEST:
+ return "Remote request";
+ case BluetoothStatusCodes.ERROR_DISCONNECT_REASON_LOCAL:
+ return "Local error";
+ case BluetoothStatusCodes.ERROR_DISCONNECT_REASON_REMOTE:
+ return "Remote error";
+ case BluetoothStatusCodes.ERROR_DISCONNECT_REASON_TIMEOUT:
+ return "Timeout";
+ case BluetoothStatusCodes.ERROR_DISCONNECT_REASON_SECURITY:
+ return "Security";
+ case BluetoothStatusCodes.ERROR_DISCONNECT_REASON_SYSTEM_POLICY:
+ return "System policy";
+ case BluetoothStatusCodes.ERROR_DISCONNECT_REASON_RESOURCE_LIMIT_REACHED:
+ return "Resource constrained";
+ case BluetoothStatusCodes.ERROR_DISCONNECT_REASON_CONNECTION_ALREADY_EXISTS:
+ return "Connection already exists";
+ case BluetoothStatusCodes.ERROR_DISCONNECT_REASON_BAD_PARAMETERS:
+ return "Bad parameters";
+ default:
+ return "Unrecognized disconnect reason: " + reason;
+ }
+ }
+ }
+
+ /**
+ * Converts old constant of priority to the new for connection policy
+ *
+ * @param priority is the priority to convert to connection policy
+ * @return the equivalent connection policy constant to the priority
+ *
+ * @hide
+ */
+ public static @ConnectionPolicy int priorityToConnectionPolicy(int priority) {
+ switch(priority) {
+ case BluetoothProfile.PRIORITY_AUTO_CONNECT:
+ return BluetoothProfile.CONNECTION_POLICY_ALLOWED;
+ case BluetoothProfile.PRIORITY_ON:
+ return BluetoothProfile.CONNECTION_POLICY_ALLOWED;
+ case BluetoothProfile.PRIORITY_OFF:
+ return BluetoothProfile.CONNECTION_POLICY_FORBIDDEN;
+ case BluetoothProfile.PRIORITY_UNDEFINED:
+ return BluetoothProfile.CONNECTION_POLICY_UNKNOWN;
+ default:
+ Log.e(TAG, "setPriority: Invalid priority: " + priority);
+ return BluetoothProfile.CONNECTION_POLICY_UNKNOWN;
+ }
+ }
+
+ /**
+ * Converts new constant of connection policy to the old for priority
+ *
+ * @param connectionPolicy is the connection policy to convert to priority
+ * @return the equivalent priority constant to the connectionPolicy
+ *
+ * @hide
+ */
+ public static int connectionPolicyToPriority(@ConnectionPolicy int connectionPolicy) {
+ switch(connectionPolicy) {
+ case BluetoothProfile.CONNECTION_POLICY_ALLOWED:
+ return BluetoothProfile.PRIORITY_ON;
+ case BluetoothProfile.CONNECTION_POLICY_FORBIDDEN:
+ return BluetoothProfile.PRIORITY_OFF;
+ case BluetoothProfile.CONNECTION_POLICY_UNKNOWN:
+ return BluetoothProfile.PRIORITY_UNDEFINED;
+ }
+ return BluetoothProfile.PRIORITY_UNDEFINED;
+ }
+}
