| /* | |
| * Copyright (C) 2015 The Android Open Source Project | |
| * | |
| * 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 com.android.server; | |
| import android.app.ActivityManager; | |
| import android.app.StatusBarManager; | |
| import android.content.BroadcastReceiver; | |
| import android.content.Context; | |
| import android.content.Intent; | |
| import android.content.IntentFilter; | |
| import android.content.res.Resources; | |
| import android.database.ContentObserver; | |
| import android.hardware.Sensor; | |
| import android.hardware.SensorEvent; | |
| import android.hardware.SensorEventListener; | |
| import android.hardware.SensorManager; | |
| import android.hardware.TriggerEvent; | |
| import android.hardware.TriggerEventListener; | |
| import android.os.Handler; | |
| import android.os.PowerManager; | |
| import android.os.PowerManager.WakeLock; | |
| import android.os.SystemClock; | |
| import android.os.SystemProperties; | |
| import android.os.UserHandle; | |
| import android.provider.Settings; | |
| import android.util.MutableBoolean; | |
| import android.util.Slog; | |
| import android.view.KeyEvent; | |
| import android.view.WindowManagerInternal; | |
| import com.android.internal.annotations.VisibleForTesting; | |
| import com.android.internal.logging.MetricsLogger; | |
| import com.android.internal.logging.nano.MetricsProto.MetricsEvent; | |
| import com.android.server.LocalServices; | |
| import com.android.server.statusbar.StatusBarManagerInternal; | |
| /** | |
| * The service that listens for gestures detected in sensor firmware and starts the intent | |
| * accordingly. | |
| * <p>For now, only camera launch gesture is supported, and in the future, more gestures can be | |
| * added.</p> | |
| * @hide | |
| */ | |
| public class GestureLauncherService extends SystemService { | |
| private static final boolean DBG = false; | |
| private static final boolean DBG_CAMERA_LIFT = false; | |
| private static final String TAG = "GestureLauncherService"; | |
| /** | |
| * Time in milliseconds in which the power button must be pressed twice so it will be considered | |
| * as a camera launch. | |
| */ | |
| @VisibleForTesting static final long CAMERA_POWER_DOUBLE_TAP_MAX_TIME_MS = 300; | |
| /** | |
| * Interval in milliseconds in which the power button must be depressed in succession to be | |
| * considered part of an extended sequence of taps. Note that this is a looser threshold than | |
| * the camera launch gesture, because the purpose of this threshold is to measure the | |
| * frequency of consecutive taps, for evaluation for future gestures. | |
| */ | |
| @VisibleForTesting static final long POWER_SHORT_TAP_SEQUENCE_MAX_INTERVAL_MS = 500; | |
| /** The listener that receives the gesture event. */ | |
| private final GestureEventListener mGestureListener = new GestureEventListener(); | |
| private final CameraLiftTriggerEventListener mCameraLiftTriggerListener = | |
| new CameraLiftTriggerEventListener(); | |
| private Sensor mCameraLaunchSensor; | |
| private Sensor mCameraLiftTriggerSensor; | |
| private Context mContext; | |
| private final MetricsLogger mMetricsLogger; | |
| private PowerManager mPowerManager; | |
| private WindowManagerInternal mWindowManagerInternal; | |
| /** The wake lock held when a gesture is detected. */ | |
| private WakeLock mWakeLock; | |
| private boolean mCameraLaunchRegistered; | |
| private boolean mCameraLiftRegistered; | |
| private int mUserId; | |
| // Below are fields used for event logging only. | |
| /** Elapsed real time when the camera gesture is turned on. */ | |
| private long mCameraGestureOnTimeMs = 0L; | |
| /** Elapsed real time when the last camera gesture was detected. */ | |
| private long mCameraGestureLastEventTime = 0L; | |
| /** | |
| * How long the sensor 1 has been turned on since camera launch sensor was | |
| * subscribed to and when the last camera launch gesture was detected. | |
| * <p>Sensor 1 is the main sensor used to detect camera launch gesture.</p> | |
| */ | |
| private long mCameraGestureSensor1LastOnTimeMs = 0L; | |
| /** | |
| * If applicable, how long the sensor 2 has been turned on since camera | |
| * launch sensor was subscribed to and when the last camera launch | |
| * gesture was detected. | |
| * <p>Sensor 2 is the secondary sensor used to detect camera launch gesture. | |
| * This is optional and if only sensor 1 is used for detect camera launch | |
| * gesture, this value would always be 0.</p> | |
| */ | |
| private long mCameraGestureSensor2LastOnTimeMs = 0L; | |
| /** | |
| * Extra information about the event when the last camera launch gesture | |
| * was detected. | |
| */ | |
| private int mCameraLaunchLastEventExtra = 0; | |
| /** | |
| * Whether camera double tap power button gesture is currently enabled; | |
| */ | |
| private boolean mCameraDoubleTapPowerEnabled; | |
| private long mLastPowerDown; | |
| private int mPowerButtonConsecutiveTaps; | |
| public GestureLauncherService(Context context) { | |
| this(context, new MetricsLogger()); | |
| } | |
| @VisibleForTesting | |
| GestureLauncherService(Context context, MetricsLogger metricsLogger) { | |
| super(context); | |
| mContext = context; | |
| mMetricsLogger = metricsLogger; | |
| } | |
| public void onStart() { | |
| LocalServices.addService(GestureLauncherService.class, this); | |
| } | |
| public void onBootPhase(int phase) { | |
| if (phase == PHASE_THIRD_PARTY_APPS_CAN_START) { | |
| Resources resources = mContext.getResources(); | |
| if (!isGestureLauncherEnabled(resources)) { | |
| if (DBG) Slog.d(TAG, "Gesture launcher is disabled in system properties."); | |
| return; | |
| } | |
| mWindowManagerInternal = LocalServices.getService(WindowManagerInternal.class); | |
| mPowerManager = (PowerManager) mContext.getSystemService( | |
| Context.POWER_SERVICE); | |
| mWakeLock = mPowerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, | |
| "GestureLauncherService"); | |
| updateCameraRegistered(); | |
| updateCameraDoubleTapPowerEnabled(); | |
| mUserId = ActivityManager.getCurrentUser(); | |
| mContext.registerReceiver(mUserReceiver, new IntentFilter(Intent.ACTION_USER_SWITCHED)); | |
| registerContentObservers(); | |
| } | |
| } | |
| private void registerContentObservers() { | |
| mContext.getContentResolver().registerContentObserver( | |
| Settings.Secure.getUriFor(Settings.Secure.CAMERA_GESTURE_DISABLED), | |
| false, mSettingObserver, mUserId); | |
| mContext.getContentResolver().registerContentObserver( | |
| Settings.Secure.getUriFor(Settings.Secure.CAMERA_DOUBLE_TAP_POWER_GESTURE_DISABLED), | |
| false, mSettingObserver, mUserId); | |
| mContext.getContentResolver().registerContentObserver( | |
| Settings.Secure.getUriFor(Settings.Secure.CAMERA_LIFT_TRIGGER_ENABLED), | |
| false, mSettingObserver, mUserId); | |
| } | |
| private void updateCameraRegistered() { | |
| Resources resources = mContext.getResources(); | |
| if (isCameraLaunchSettingEnabled(mContext, mUserId)) { | |
| registerCameraLaunchGesture(resources); | |
| } else { | |
| unregisterCameraLaunchGesture(); | |
| } | |
| if (isCameraLiftTriggerSettingEnabled(mContext, mUserId)) { | |
| registerCameraLiftTrigger(resources); | |
| } else { | |
| unregisterCameraLiftTrigger(); | |
| } | |
| } | |
| @VisibleForTesting | |
| void updateCameraDoubleTapPowerEnabled() { | |
| boolean enabled = isCameraDoubleTapPowerSettingEnabled(mContext, mUserId); | |
| synchronized (this) { | |
| mCameraDoubleTapPowerEnabled = enabled; | |
| } | |
| } | |
| private void unregisterCameraLaunchGesture() { | |
| if (mCameraLaunchRegistered) { | |
| mCameraLaunchRegistered = false; | |
| mCameraGestureOnTimeMs = 0L; | |
| mCameraGestureLastEventTime = 0L; | |
| mCameraGestureSensor1LastOnTimeMs = 0; | |
| mCameraGestureSensor2LastOnTimeMs = 0; | |
| mCameraLaunchLastEventExtra = 0; | |
| SensorManager sensorManager = (SensorManager) mContext.getSystemService( | |
| Context.SENSOR_SERVICE); | |
| sensorManager.unregisterListener(mGestureListener); | |
| } | |
| } | |
| /** | |
| * Registers for the camera launch gesture. | |
| */ | |
| private void registerCameraLaunchGesture(Resources resources) { | |
| if (mCameraLaunchRegistered) { | |
| return; | |
| } | |
| mCameraGestureOnTimeMs = SystemClock.elapsedRealtime(); | |
| mCameraGestureLastEventTime = mCameraGestureOnTimeMs; | |
| SensorManager sensorManager = (SensorManager) mContext.getSystemService( | |
| Context.SENSOR_SERVICE); | |
| int cameraLaunchGestureId = resources.getInteger( | |
| com.android.internal.R.integer.config_cameraLaunchGestureSensorType); | |
| if (cameraLaunchGestureId != -1) { | |
| mCameraLaunchRegistered = false; | |
| String sensorName = resources.getString( | |
| com.android.internal.R.string.config_cameraLaunchGestureSensorStringType); | |
| mCameraLaunchSensor = sensorManager.getDefaultSensor( | |
| cameraLaunchGestureId, | |
| true /*wakeUp*/); | |
| // Compare the camera gesture string type to that in the resource file to make | |
| // sure we are registering the correct sensor. This is redundant check, it | |
| // makes the code more robust. | |
| if (mCameraLaunchSensor != null) { | |
| if (sensorName.equals(mCameraLaunchSensor.getStringType())) { | |
| mCameraLaunchRegistered = sensorManager.registerListener(mGestureListener, | |
| mCameraLaunchSensor, 0); | |
| } else { | |
| String message = String.format("Wrong configuration. Sensor type and sensor " | |
| + "string type don't match: %s in resources, %s in the sensor.", | |
| sensorName, mCameraLaunchSensor.getStringType()); | |
| throw new RuntimeException(message); | |
| } | |
| } | |
| if (DBG) Slog.d(TAG, "Camera launch sensor registered: " + mCameraLaunchRegistered); | |
| } else { | |
| if (DBG) Slog.d(TAG, "Camera launch sensor is not specified."); | |
| } | |
| } | |
| private void unregisterCameraLiftTrigger() { | |
| if (mCameraLiftRegistered) { | |
| mCameraLiftRegistered = false; | |
| SensorManager sensorManager = (SensorManager) mContext.getSystemService( | |
| Context.SENSOR_SERVICE); | |
| sensorManager.cancelTriggerSensor(mCameraLiftTriggerListener, mCameraLiftTriggerSensor); | |
| } | |
| } | |
| /** | |
| * Registers for the camera lift trigger. | |
| */ | |
| private void registerCameraLiftTrigger(Resources resources) { | |
| if (mCameraLiftRegistered) { | |
| return; | |
| } | |
| SensorManager sensorManager = (SensorManager) mContext.getSystemService( | |
| Context.SENSOR_SERVICE); | |
| int cameraLiftTriggerId = resources.getInteger( | |
| com.android.internal.R.integer.config_cameraLiftTriggerSensorType); | |
| if (cameraLiftTriggerId != -1) { | |
| mCameraLiftRegistered = false; | |
| String sensorName = resources.getString( | |
| com.android.internal.R.string.config_cameraLiftTriggerSensorStringType); | |
| mCameraLiftTriggerSensor = sensorManager.getDefaultSensor( | |
| cameraLiftTriggerId, | |
| true /*wakeUp*/); | |
| // Compare the camera lift trigger string type to that in the resource file to make | |
| // sure we are registering the correct sensor. This is redundant check, it | |
| // makes the code more robust. | |
| if (mCameraLiftTriggerSensor != null) { | |
| if (sensorName.equals(mCameraLiftTriggerSensor.getStringType())) { | |
| mCameraLiftRegistered = sensorManager.requestTriggerSensor(mCameraLiftTriggerListener, | |
| mCameraLiftTriggerSensor); | |
| } else { | |
| String message = String.format("Wrong configuration. Sensor type and sensor " | |
| + "string type don't match: %s in resources, %s in the sensor.", | |
| sensorName, mCameraLiftTriggerSensor.getStringType()); | |
| throw new RuntimeException(message); | |
| } | |
| } | |
| if (DBG) Slog.d(TAG, "Camera lift trigger sensor registered: " + mCameraLiftRegistered); | |
| } else { | |
| if (DBG) Slog.d(TAG, "Camera lift trigger sensor is not specified."); | |
| } | |
| } | |
| public static boolean isCameraLaunchSettingEnabled(Context context, int userId) { | |
| return isCameraLaunchEnabled(context.getResources()) | |
| && (Settings.Secure.getIntForUser(context.getContentResolver(), | |
| Settings.Secure.CAMERA_GESTURE_DISABLED, 0, userId) == 0); | |
| } | |
| public static boolean isCameraDoubleTapPowerSettingEnabled(Context context, int userId) { | |
| return isCameraDoubleTapPowerEnabled(context.getResources()) | |
| && (Settings.Secure.getIntForUser(context.getContentResolver(), | |
| Settings.Secure.CAMERA_DOUBLE_TAP_POWER_GESTURE_DISABLED, 0, userId) == 0); | |
| } | |
| public static boolean isCameraLiftTriggerSettingEnabled(Context context, int userId) { | |
| return isCameraLiftTriggerEnabled(context.getResources()) | |
| && (Settings.Secure.getIntForUser(context.getContentResolver(), | |
| Settings.Secure.CAMERA_LIFT_TRIGGER_ENABLED, | |
| Settings.Secure.CAMERA_LIFT_TRIGGER_ENABLED_DEFAULT, userId) != 0); | |
| } | |
| /** | |
| * Whether to enable the camera launch gesture. | |
| */ | |
| public static boolean isCameraLaunchEnabled(Resources resources) { | |
| boolean configSet = resources.getInteger( | |
| com.android.internal.R.integer.config_cameraLaunchGestureSensorType) != -1; | |
| return configSet && | |
| !SystemProperties.getBoolean("gesture.disable_camera_launch", false); | |
| } | |
| public static boolean isCameraDoubleTapPowerEnabled(Resources resources) { | |
| return resources.getBoolean( | |
| com.android.internal.R.bool.config_cameraDoubleTapPowerGestureEnabled); | |
| } | |
| public static boolean isCameraLiftTriggerEnabled(Resources resources) { | |
| boolean configSet = resources.getInteger( | |
| com.android.internal.R.integer.config_cameraLiftTriggerSensorType) != -1; | |
| return configSet; | |
| } | |
| /** | |
| * Whether GestureLauncherService should be enabled according to system properties. | |
| */ | |
| public static boolean isGestureLauncherEnabled(Resources resources) { | |
| return isCameraLaunchEnabled(resources) || isCameraDoubleTapPowerEnabled(resources) || | |
| isCameraLiftTriggerEnabled(resources); | |
| } | |
| public boolean interceptPowerKeyDown(KeyEvent event, boolean interactive, | |
| MutableBoolean outLaunched) { | |
| boolean launched = false; | |
| boolean intercept = false; | |
| long powerTapInterval; | |
| synchronized (this) { | |
| powerTapInterval = event.getEventTime() - mLastPowerDown; | |
| if (mCameraDoubleTapPowerEnabled | |
| && powerTapInterval < CAMERA_POWER_DOUBLE_TAP_MAX_TIME_MS) { | |
| launched = true; | |
| intercept = interactive; | |
| mPowerButtonConsecutiveTaps++; | |
| } else if (powerTapInterval < POWER_SHORT_TAP_SEQUENCE_MAX_INTERVAL_MS) { | |
| mPowerButtonConsecutiveTaps++; | |
| } else { | |
| mPowerButtonConsecutiveTaps = 1; | |
| } | |
| mLastPowerDown = event.getEventTime(); | |
| } | |
| if (DBG && mPowerButtonConsecutiveTaps > 1) { | |
| Slog.i(TAG, Long.valueOf(mPowerButtonConsecutiveTaps) + | |
| " consecutive power button taps detected"); | |
| } | |
| if (launched) { | |
| Slog.i(TAG, "Power button double tap gesture detected, launching camera. Interval=" | |
| + powerTapInterval + "ms"); | |
| launched = handleCameraGesture(false /* useWakelock */, | |
| StatusBarManager.CAMERA_LAUNCH_SOURCE_POWER_DOUBLE_TAP); | |
| if (launched) { | |
| mMetricsLogger.action(MetricsEvent.ACTION_DOUBLE_TAP_POWER_CAMERA_GESTURE, | |
| (int) powerTapInterval); | |
| } | |
| } | |
| mMetricsLogger.histogram("power_consecutive_short_tap_count", mPowerButtonConsecutiveTaps); | |
| mMetricsLogger.histogram("power_double_tap_interval", (int) powerTapInterval); | |
| outLaunched.value = launched; | |
| return intercept && launched; | |
| } | |
| /** | |
| * @return true if camera was launched, false otherwise. | |
| */ | |
| @VisibleForTesting | |
| boolean handleCameraGesture(boolean useWakelock, int source) { | |
| boolean userSetupComplete = Settings.Secure.getIntForUser(mContext.getContentResolver(), | |
| Settings.Secure.USER_SETUP_COMPLETE, 0, UserHandle.USER_CURRENT) != 0; | |
| if (!userSetupComplete) { | |
| if (DBG) Slog.d(TAG, String.format( | |
| "userSetupComplete = %s, ignoring camera gesture.", | |
| userSetupComplete)); | |
| return false; | |
| } | |
| if (DBG) Slog.d(TAG, String.format( | |
| "userSetupComplete = %s, performing camera gesture.", | |
| userSetupComplete)); | |
| if (useWakelock) { | |
| // Make sure we don't sleep too early | |
| mWakeLock.acquire(500L); | |
| } | |
| StatusBarManagerInternal service = LocalServices.getService( | |
| StatusBarManagerInternal.class); | |
| service.onCameraLaunchGestureDetected(source); | |
| return true; | |
| } | |
| private final BroadcastReceiver mUserReceiver = new BroadcastReceiver() { | |
| @Override | |
| public void onReceive(Context context, Intent intent) { | |
| if (Intent.ACTION_USER_SWITCHED.equals(intent.getAction())) { | |
| mUserId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0); | |
| mContext.getContentResolver().unregisterContentObserver(mSettingObserver); | |
| registerContentObservers(); | |
| updateCameraRegistered(); | |
| updateCameraDoubleTapPowerEnabled(); | |
| } | |
| } | |
| }; | |
| private final ContentObserver mSettingObserver = new ContentObserver(new Handler()) { | |
| public void onChange(boolean selfChange, android.net.Uri uri, int userId) { | |
| if (userId == mUserId) { | |
| updateCameraRegistered(); | |
| updateCameraDoubleTapPowerEnabled(); | |
| } | |
| } | |
| }; | |
| private final class GestureEventListener implements SensorEventListener { | |
| @Override | |
| public void onSensorChanged(SensorEvent event) { | |
| if (!mCameraLaunchRegistered) { | |
| if (DBG) Slog.d(TAG, "Ignoring gesture event because it's unregistered."); | |
| return; | |
| } | |
| if (event.sensor == mCameraLaunchSensor) { | |
| if (DBG) { | |
| float[] values = event.values; | |
| Slog.d(TAG, String.format("Received a camera launch event: " + | |
| "values=[%.4f, %.4f, %.4f].", values[0], values[1], values[2])); | |
| } | |
| if (handleCameraGesture(true /* useWakelock */, | |
| StatusBarManager.CAMERA_LAUNCH_SOURCE_WIGGLE)) { | |
| mMetricsLogger.action(MetricsEvent.ACTION_WIGGLE_CAMERA_GESTURE); | |
| trackCameraLaunchEvent(event); | |
| } | |
| return; | |
| } | |
| } | |
| @Override | |
| public void onAccuracyChanged(Sensor sensor, int accuracy) { | |
| // Ignored. | |
| } | |
| private void trackCameraLaunchEvent(SensorEvent event) { | |
| long now = SystemClock.elapsedRealtime(); | |
| long totalDuration = now - mCameraGestureOnTimeMs; | |
| // values[0]: ratio between total time duration when accel is turned on and time | |
| // duration since camera launch gesture is subscribed. | |
| // values[1]: ratio between total time duration when gyro is turned on and time duration | |
| // since camera launch gesture is subscribed. | |
| // values[2]: extra information | |
| float[] values = event.values; | |
| long sensor1OnTime = (long) (totalDuration * (double) values[0]); | |
| long sensor2OnTime = (long) (totalDuration * (double) values[1]); | |
| int extra = (int) values[2]; | |
| // We only log the difference in the event log to make aggregation easier. | |
| long gestureOnTimeDiff = now - mCameraGestureLastEventTime; | |
| long sensor1OnTimeDiff = sensor1OnTime - mCameraGestureSensor1LastOnTimeMs; | |
| long sensor2OnTimeDiff = sensor2OnTime - mCameraGestureSensor2LastOnTimeMs; | |
| int extraDiff = extra - mCameraLaunchLastEventExtra; | |
| // Gating against negative time difference. This doesn't usually happen, but it may | |
| // happen because of numeric errors. | |
| if (gestureOnTimeDiff < 0 || sensor1OnTimeDiff < 0 || sensor2OnTimeDiff < 0) { | |
| if (DBG) Slog.d(TAG, "Skipped event logging because negative numbers."); | |
| return; | |
| } | |
| if (DBG) Slog.d(TAG, String.format("totalDuration: %d, sensor1OnTime: %s, " + | |
| "sensor2OnTime: %d, extra: %d", | |
| gestureOnTimeDiff, | |
| sensor1OnTimeDiff, | |
| sensor2OnTimeDiff, | |
| extraDiff)); | |
| EventLogTags.writeCameraGestureTriggered( | |
| gestureOnTimeDiff, | |
| sensor1OnTimeDiff, | |
| sensor2OnTimeDiff, | |
| extraDiff); | |
| mCameraGestureLastEventTime = now; | |
| mCameraGestureSensor1LastOnTimeMs = sensor1OnTime; | |
| mCameraGestureSensor2LastOnTimeMs = sensor2OnTime; | |
| mCameraLaunchLastEventExtra = extra; | |
| } | |
| } | |
| private final class CameraLiftTriggerEventListener extends TriggerEventListener { | |
| @Override | |
| public void onTrigger(TriggerEvent event) { | |
| if (DBG_CAMERA_LIFT) Slog.d(TAG, String.format("onTrigger event - time: %d, name: %s", | |
| event.timestamp, event.sensor.getName())); | |
| if (!mCameraLiftRegistered) { | |
| if (DBG_CAMERA_LIFT) Slog.d(TAG, "Ignoring camera lift event because it's " + | |
| "unregistered."); | |
| return; | |
| } | |
| if (event.sensor == mCameraLiftTriggerSensor) { | |
| Resources resources = mContext.getResources(); | |
| SensorManager sensorManager = (SensorManager) mContext.getSystemService( | |
| Context.SENSOR_SERVICE); | |
| boolean keyguardShowingAndNotOccluded = | |
| mWindowManagerInternal.isKeyguardShowingAndNotOccluded(); | |
| boolean interactive = mPowerManager.isInteractive(); | |
| if (DBG_CAMERA_LIFT) { | |
| float[] values = event.values; | |
| Slog.d(TAG, String.format("Received a camera lift trigger " + | |
| "event: values=[%.4f], keyguard showing: %b, interactive: %b", values[0], | |
| keyguardShowingAndNotOccluded, interactive)); | |
| } | |
| if (keyguardShowingAndNotOccluded || !interactive) { | |
| if (handleCameraGesture(true /* useWakelock */, | |
| StatusBarManager.CAMERA_LAUNCH_SOURCE_LIFT_TRIGGER)) { | |
| MetricsLogger.action(mContext, MetricsEvent.ACTION_CAMERA_LIFT_TRIGGER); | |
| } | |
| } else { | |
| if (DBG_CAMERA_LIFT) Slog.d(TAG, "Ignoring lift event"); | |
| } | |
| mCameraLiftRegistered = sensorManager.requestTriggerSensor( | |
| mCameraLiftTriggerListener, mCameraLiftTriggerSensor); | |
| if (DBG_CAMERA_LIFT) Slog.d(TAG, "Camera lift trigger sensor re-registered: " + | |
| mCameraLiftRegistered); | |
| return; | |
| } | |
| } | |
| } | |
| } |