How to play audio through Bluetooth speaker even when headset is plugged in?

Question

I have my phone connected to a Bluetooth speaker and the headphones plugged in. Now I\'d like to play audio through the Bluetooth speaker. When I set the audio stream to A

Answer 1

Bluetooth connection may work with below state is true . After receive BluetoothA2dp.STATE_CONNECTED, you can play music as normal.

Java Code Examples for android.bluetooth.BluetoothA2dp.STATE_CONNECTED

public BluetoothHandsfree(Context context, CallManager cm) {
    mCM = cm;
    mContext = context;
    BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
    boolean bluetoothCapable = (adapter != null);
    mHeadset = null;  // nothing connected yet
    mA2dp = new BluetoothA2dp(mContext);
    mA2dpState = BluetoothA2dp.STATE_DISCONNECTED;
    mA2dpDevice = null;
    mA2dpSuspended = false;

    mPowerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
    mStartCallWakeLock = mPowerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
                                                   TAG + ":StartCall");
    mStartCallWakeLock.setReferenceCounted(false);
    mStartVoiceRecognitionWakeLock = mPowerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
                                                   TAG + ":VoiceRecognition");
    mStartVoiceRecognitionWakeLock.setReferenceCounted(false);

    mLocalBrsf = BRSF_AG_THREE_WAY_CALLING |
                 BRSF_AG_EC_NR |
                 BRSF_AG_REJECT_CALL |
                 BRSF_AG_ENHANCED_CALL_STATUS;

    if (sVoiceCommandIntent == null) {
        sVoiceCommandIntent = new Intent(Intent.ACTION_VOICE_COMMAND);
        sVoiceCommandIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    }
    if (mContext.getPackageManager().resolveActivity(sVoiceCommandIntent, 0) != null &&
            BluetoothHeadset.isBluetoothVoiceDialingEnabled(mContext)) {
        mLocalBrsf |= BRSF_AG_VOICE_RECOG;
    }

    mBluetoothPhoneState = new BluetoothPhoneState();
    mUserWantsAudio = true;
    mPhonebook = new BluetoothAtPhonebook(mContext, this);
    mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
    cdmaSetSecondCallState(false);

    if (bluetoothCapable) {
        resetAtState();
    }

}

please find below links : with sample codes it may help you.

Java Code Examples for android.bluetooth.BluetoothHeadset

Programmatically connect to paired Bluetooth speaker and play audio