android/or 替代方案中蓝牙耳机的粘性广播意图

Question

我正在开发一个应用程序，我需要知道是否连接了蓝牙耳机。我已经创建了一个广播接收器，如果我们在应用程序打开时连接到蓝牙耳机，它会接收广播意图。另一方面，如果连接到蓝牙设备然后启动应用程序，我不会收到任何关于蓝牙设备连接的广播。我想知道应用程序启动时是否连接了任何蓝牙耳机。以下是我的广播接收器和清单。

public class BluetoothDeviceConnectionReciver extends BroadcastReceiver {


    static OnBluetoothDeviceStateChangeLisener onBluetoothStateChangedListener;

    @Override
    public void onReceive(Context context, Intent intent) {
    String action = intent.getAction();
    //int headsetAudioState = intent.getIntExtra("android.bluetooth.headset.extra.AUDIO_STATE", -2);

    //Toast.makeText(context, "New Test", Toast.LENGTH_SHORT).show();

    //BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
    Log.i("headsetAudioState","in broadcast");


    if (BluetoothHeadset.ACTION_CONNECTION_STATE_CHANGED.equals(action)) {
        int bluetoothHeadsetState = intent.getIntExtra(BluetoothHeadset.EXTRA_STATE,
                BluetoothHeadset.STATE_DISCONNECTED);
        Log.i("headsetAudioState",bluetoothHeadsetState+" ");
        //Device found
        if (bluetoothHeadsetState == BluetoothHeadset.STATE_CONNECTED) {
            if (onBluetoothStateChangedListener != null)
                onBluetoothStateChangedListener.OnBluetoothHeadsetConnected();
            Log.i("headsetAudioState",bluetoothHeadsetState+" connected");
        }
        if(bluetoothHeadsetState == BluetoothHeadset.STATE_DISCONNECTED){
            if (onBluetoothStateChangedListener != null)
                onBluetoothStateChangedListener.OnBluetoothHeadsetDisconnected();
            Log.i("headsetAudioState",bluetoothHeadsetState+" disconnected");
        }
    }



    if (BluetoothDevice.ACTION_ACL_CONNECTED.equals(action)) {
        //Device is now connected
        if (onBluetoothStateChangedListener != null)
            onBluetoothStateChangedListener.OnBluetoothHeadsetConnected();
    } else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {
        //Done searching
    } else if (BluetoothDevice.ACTION_ACL_DISCONNECT_REQUESTED.equals(action)) {
        //Device is about to disconnect
    } else if (BluetoothDevice.ACTION_ACL_DISCONNECTED.equals(action)) {
        //Device has disconnected
        if (onBluetoothStateChangedListener != null)
            onBluetoothStateChangedListener.OnBluetoothHeadsetDisconnected();

    } 


    }
    public void setOnBluetoothStateChangeListener(OnBluetoothDeviceStateChangeLisener listener){
    onBluetoothStateChangedListener = listener;
    }

    public interface OnBluetoothDeviceStateChangeLisener{
    void OnBluetoothHeadsetConnected();
    void OnBluetoothHeadsetDisconnected();
    }
}

manifest.xml

   .....
   .....
   .....

   <receiver android:name=".BluetoothDeviceConnectionReciver">
        <intent-filter>
            <action android:name="android.bluetooth.headset.profile.action.CONNECTION_STATE_CHANGED"/>
            <action android:name="android.bluetooth.device.action.ACL_CONNECTED" />
            <action android:name="android.bluetooth.device.action.ACL_DISCONNECTED" />
        </intent-filter>

    </receiver>

   .....
   .....

我想知道是否还有其他我应该听取的意图。或者请让我知道我还有哪些其他选择可以实现预期目标。

P.S : 连接的设备应该是耳机，因为我打算使用蓝牙耳机的mic。

Answer 1

好吧，我进行了很多挖掘，但没能找到任何有粘性的广播，因此在应用程序启动时我会知道 phone 是否已连接到蓝牙耳机，如问题。

我实现的工作是获取蓝牙适配器并检查蓝牙配置文件的连接状态，如下面的代码

    public boolean isBluetoothHeadsetConnected() {
        BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
        boolean isConnected = mBluetoothAdapter != null && mBluetoothAdapter.isEnabled()
                && mBluetoothAdapter.getProfileConnectionState(BluetoothHeadset.HEADSET) == BluetoothHeadset.STATE_CONNECTED;
        Log.i("bluetoothConnected",isConnected+"");
        return  isConnected;
    }

我在app的SplashScreenActivity的onCreate()中调用了这段代码，并设置了相应的flag。应用程序启动后蓝牙状态的变化由我在问题中实现的广播监听器处理。这段代码很好地达到了我的目的。

android/or 替代方案中蓝牙耳机的粘性广播意图

A sticky broadcast intent for a bluetooth headset in android/or an alternative

android

bluetooth

headset

android-broadcast

sticky-broadcast