Set default discovery technology
Bug: 321311407
Test: off/on, read tag
Merged-In: Ice76dda2b4bb97df60dc94521436393a9e829ea5
Change-Id: Ice76dda2b4bb97df60dc94521436393a9e829ea5
diff --git a/nfc/api/system-current.txt b/nfc/api/system-current.txt
index 6149011..3375e18c 100644
--- a/nfc/api/system-current.txt
+++ b/nfc/api/system-current.txt
@@ -27,6 +27,7 @@
field @FlaggedApi("android.nfc.enable_nfc_mainline") public static final String ACTION_REQUIRE_UNLOCK_FOR_NFC = "android.nfc.action.REQUIRE_UNLOCK_FOR_NFC";
field @FlaggedApi("android.nfc.enable_nfc_mainline") @RequiresPermission(android.Manifest.permission.SHOW_CUSTOMIZED_RESOLVER) public static final String ACTION_SHOW_NFC_RESOLVER = "android.nfc.action.SHOW_NFC_RESOLVER";
field @FlaggedApi("android.nfc.enable_nfc_mainline") public static final String EXTRA_RESOLVE_INFOS = "android.nfc.extra.RESOLVE_INFOS";
+ field @FlaggedApi("android.nfc.nfc_set_default_disc_tech") @RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS) public static final int FLAG_SET_DEFAULT_TECH = 1073741824; // 0x40000000
field @FlaggedApi("android.nfc.nfc_vendor_cmd") public static final int MESSAGE_TYPE_COMMAND = 1; // 0x1
field @FlaggedApi("android.nfc.nfc_vendor_cmd") public static final int SEND_VENDOR_NCI_STATUS_FAILED = 3; // 0x3
field @FlaggedApi("android.nfc.nfc_vendor_cmd") public static final int SEND_VENDOR_NCI_STATUS_MESSAGE_CORRUPTED = 2; // 0x2
diff --git a/nfc/java/android/nfc/NfcAdapter.java b/nfc/java/android/nfc/NfcAdapter.java
index 698df28..1dfc81e 100644
--- a/nfc/java/android/nfc/NfcAdapter.java
+++ b/nfc/java/android/nfc/NfcAdapter.java
@@ -340,7 +340,8 @@
public static final int FLAG_READER_NFC_BARCODE = 0x10;
/** @hide */
- @IntDef(flag = true, prefix = {"FLAG_READER_"}, value = {
+ @IntDef(flag = true, value = {
+ FLAG_SET_DEFAULT_TECH,
FLAG_READER_KEEP,
FLAG_READER_DISABLE,
FLAG_READER_NFC_A,
@@ -438,7 +439,8 @@
public static final int FLAG_USE_ALL_TECH = 0xff;
/** @hide */
- @IntDef(flag = true, prefix = {"FLAG_LISTEN_"}, value = {
+ @IntDef(flag = true, value = {
+ FLAG_SET_DEFAULT_TECH,
FLAG_LISTEN_KEEP,
FLAG_LISTEN_DISABLE,
FLAG_LISTEN_NFC_PASSIVE_A,
@@ -449,6 +451,18 @@
public @interface ListenTechnology {}
/**
+ * Flag used in {@link #setDiscoveryTechnology(Activity, int, int)}.
+ * <p>
+ * Setting this flag changes the default listen or poll tech.
+ * Only available to privileged apps.
+ * @hide
+ */
+ @SystemApi
+ @FlaggedApi(Flags.FLAG_NFC_SET_DEFAULT_DISC_TECH)
+ @RequiresPermission(Manifest.permission.WRITE_SECURE_SETTINGS)
+ public static final int FLAG_SET_DEFAULT_TECH = 0x40000000;
+
+ /**
* @hide
* @removed
*/
@@ -1874,14 +1888,6 @@
public void setDiscoveryTechnology(@NonNull Activity activity,
@PollTechnology int pollTechnology, @ListenTechnology int listenTechnology) {
- // A special treatment of the _KEEP flags
- if ((listenTechnology & FLAG_LISTEN_KEEP) != 0) {
- listenTechnology = -1;
- }
- if ((pollTechnology & FLAG_READER_KEEP) != 0) {
- pollTechnology = -1;
- }
-
if (listenTechnology == FLAG_LISTEN_DISABLE) {
synchronized (sLock) {
if (!sHasNfcFeature) {
@@ -1901,7 +1907,25 @@
}
}
}
- mNfcActivityManager.setDiscoveryTech(activity, pollTechnology, listenTechnology);
+ /*
+ * Privileged FLAG to set technology mask for all data processed by NFC controller
+ * Note: Use with caution! The app is responsible for ensuring that the discovery
+ * technology mask is returned to default.
+ * Note: FLAG_USE_ALL_TECH used with _KEEP flags will reset the technolody to android default
+ */
+ if (Flags.nfcSetDefaultDiscTech()
+ && ((pollTechnology & FLAG_SET_DEFAULT_TECH) == FLAG_SET_DEFAULT_TECH
+ || (listenTechnology & FLAG_SET_DEFAULT_TECH) == FLAG_SET_DEFAULT_TECH)) {
+ Binder token = new Binder();
+ try {
+ NfcAdapter.sService.updateDiscoveryTechnology(token,
+ pollTechnology, listenTechnology);
+ } catch (RemoteException e) {
+ attemptDeadServiceRecovery(e);
+ }
+ } else {
+ mNfcActivityManager.setDiscoveryTech(activity, pollTechnology, listenTechnology);
+ }
}
/**
diff --git a/nfc/java/android/nfc/flags.aconfig b/nfc/java/android/nfc/flags.aconfig
index 5209caa..c5cc547 100644
--- a/nfc/java/android/nfc/flags.aconfig
+++ b/nfc/java/android/nfc/flags.aconfig
@@ -100,3 +100,12 @@
description: "Enable nfc state change API"
bug: "319934052"
}
+
+flag {
+ name: "nfc_set_default_disc_tech"
+ is_exported: true
+ namespace: "nfc"
+ description: "Flag for NFC set default disc tech API"
+ bug: "321311407"
+}
+
