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如何驗證當前是否有任何藍牙耳機連接到android？如何驗證藍牙耳機是否在Android上連接？
像：
如果有conected耳機，聲音必須能夠路由到這款耳機
但如果心不是耳機，聲音必須留在揚聲器
這必須在應用期間檢查，因爲如果耳機的電池熄滅，它必須向揚聲器發回聲音
解決以下/
public class BluetoothReceiver extends BroadcastReceiver {
private AudioManager localAudioManager;
private static final int STATE_DISCONNECTED = 0x00000000;
private static final String EXTRA_STATE = "android.bluetooth.headset.extra.STATE";
private static final String TAG = "BluetoothReceiver";
private static final String ACTION_BT_HEADSET_STATE_CHANGED = "android.bluetooth.headset.action.STATE_CHANGED";
private static final String ACTION_BT_HEADSET_FORCE_ON = "android.bluetooth.headset.action.FORCE_ON";
private static final String ACTION_BT_HEADSET_FORCE_OFF = "android.bluetooth.headset.action.FORCE_OFF";
@Override
public void onReceive(final Context context, final Intent intent) {
Log.i(TAG,"onReceive - BluetoothBroadcast");
localAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
final String action = intent.getAction();
if (action.equals(ACTION_BT_HEADSET_STATE_CHANGED)) {
final int extraData = intent.getIntExtra(EXTRA_STATE, STATE_DISCONNECTED);
if (extraData == STATE_DISCONNECTED) {
localAudioManager.setBluetoothScoOn(false);
localAudioManager.stopBluetoothSco();
localAudioManager.setMode(AudioManager.MODE_NORMAL);
Log.i(TAG, "Bluetooth Headset Off " + localAudioManager.getMode());
Log.i(TAG, "A2DP: " + localAudioManager.isBluetoothA2dpOn() + ". SCO: " + localAudioManager.isBluetoothScoAvailableOffCall());
} else {
localAudioManager.setMode(0);
localAudioManager.setBluetoothScoOn(true);
localAudioManager.startBluetoothSco();
localAudioManager.setMode(AudioManager.MODE_IN_CALL);
Log.i(TAG, "Bluetooth Headset On " + localAudioManager.getMode());
Log.i(TAG, "A2DP: " + localAudioManager.isBluetoothA2dpOn() + ". SCO: " + localAudioManager.isBluetoothScoAvailableOffCall());
}
}
if (action.equals(ACTION_BT_HEADSET_FORCE_ON)) {
localAudioManager.setMode(0);
localAudioManager.setBluetoothScoOn(true);
localAudioManager.startBluetoothSco();
localAudioManager.setMode(AudioManager.MODE_IN_CALL);
Log.i(TAG, "Bluetooth Headset On " + localAudioManager.getMode());
Log.i(TAG, "A2DP: " + localAudioManager.isBluetoothA2dpOn() + ". SCO: " + localAudioManager.isBluetoothScoAvailableOffCall());
}
if (action.equals(ACTION_BT_HEADSET_FORCE_OFF)) {
localAudioManager.setBluetoothScoOn(false);
localAudioManager.stopBluetoothSco();
localAudioManager.setMode(AudioManager.MODE_NORMAL);
Log.i(TAG, "Bluetooth Headset Off " + localAudioManager.getMode());
Log.i(TAG, "A2DP: " + localAudioManager.isBluetoothA2dpOn() + ". SCO: " + localAudioManager.isBluetoothScoAvailableOffCall());
}
}
}
已解決!!!!!!! – 2012-09-18 16:44:24
我剛剛清理了您的代碼，並將其推廣到其他用戶遇到同樣問題。不要發佈無關的東西，如「android.bluetooth.headset.action.FORCE_ON」或「android.bluetooth.headset.action.FORCE_OFF」（它指的是你自己創建的動作）。請不要使用外語評論。順便說一句，謝謝你的代碼。 :) – DragonWork 2013-01-16 18:45:09
我發現最好和最完整的解決方案！ – 2015-04-01 11:50:07