android.media.AudioManager#SCO_AUDIO_STATE_DISCONNECTED源码实例Demo

@Override
public void onNotifySCOAudioStateChange(int scoAudioState) {
    switch (scoAudioState) {
        case AudioManager.SCO_AUDIO_STATE_CONNECTED:
            AudioManager am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
            if (am != null) {
                am.setBluetoothScoOn(true);
            }
            break;
        case AudioManager.SCO_AUDIO_STATE_DISCONNECTED:
            Log.d("onNotifyHeadsetState",
                "onNotifySCOAudioStateChange: " + headsetPlugReceiver.isBluetoothConnected());
            if (headsetPlugReceiver.isBluetoothConnected()) {
                startBluetoothSco();
            }
            break;
    }
}
 

@SuppressWarnings("deprecation")
      @Override
public void onReceive(Context context, Intent intent) {
	String action = intent.getAction();
	Log.d(THIS_FILE, ">>> BT SCO state changed !!! ");
	if(AudioManager.ACTION_SCO_AUDIO_STATE_CHANGED.equals(action)) {
		int status = intent.getIntExtra(AudioManager.EXTRA_SCO_AUDIO_STATE, AudioManager.SCO_AUDIO_STATE_ERROR );
		Log.d(THIS_FILE, "BT SCO state changed : " + status + " target is " + targetBt);
		audioManager.setBluetoothScoOn(targetBt);
		
		if(status == AudioManager.SCO_AUDIO_STATE_CONNECTED) {
			isBluetoothConnected = true;
		}else if(status == AudioManager.SCO_AUDIO_STATE_DISCONNECTED) {
			isBluetoothConnected = false;
		}
		
		if(btChangesListener != null) {
		    btChangesListener.onBluetoothStateChanged(status);
		}
	}
}
 

@Override
public void onReceive(Context context, Intent intent) {
    AudioManager am = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
    int audioState = intent.getIntExtra(AudioManager.EXTRA_SCO_AUDIO_STATE, AudioManager.SCO_AUDIO_STATE_ERROR);
    switch (audioState) {
        case AudioManager.SCO_AUDIO_STATE_CONNECTED:
            mBluetoothScoOn = true;
            mListener.onBluetoothScoConnected();
            break;
        case AudioManager.SCO_AUDIO_STATE_DISCONNECTED:
        case AudioManager.SCO_AUDIO_STATE_ERROR:
            am.stopBluetoothSco();
            mBluetoothScoOn = false;
            mListener.onBluetoothScoDisconnected();
            break;
    }
}
 

/**
 * Registers receiver for the broadcasted intent related the existence
 * of a BT SCO channel. Indicates if BT SCO streaming is on or off.
 */
private void registerForBluetoothScoIntentBroadcast() {
    IntentFilter filter = new IntentFilter(
            AudioManager.ACTION_SCO_AUDIO_STATE_UPDATED);

    /** BroadcastReceiver implementation which handles changes in BT SCO. */
    mBluetoothScoReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            int state = intent.getIntExtra(
                    AudioManager.EXTRA_SCO_AUDIO_STATE,
                    AudioManager.SCO_AUDIO_STATE_DISCONNECTED);
            if (DEBUG) {
                logd("BroadcastReceiver.onReceive: a=" + intent.getAction()
                        + ", s=" + state
                        + ", sb=" + isInitialStickyBroadcast());
            }

            switch (state) {
                case AudioManager.SCO_AUDIO_STATE_CONNECTED:
                    mBluetoothScoState = STATE_BLUETOOTH_SCO_ON;
                    break;
                case AudioManager.SCO_AUDIO_STATE_DISCONNECTED:
                    if (mBluetoothScoState != STATE_BLUETOOTH_SCO_TURNING_OFF) {
                        // Bluetooth is probably powered off during the call.
                        // Update the existing device selection, but only if a specific
                        // device has already been selected explicitly.
                        if (deviceHasBeenRequested()) {
                            updateDeviceActivation();
                        }
                    }
                    mBluetoothScoState = STATE_BLUETOOTH_SCO_OFF;
                    break;
                case AudioManager.SCO_AUDIO_STATE_CONNECTING:
                    // do nothing
                    break;
                default:
                    loge("Invalid state");
            }
            if (DEBUG) {
                reportUpdate();
            }
        }
    };

    ContextUtils.getApplicationContext().registerReceiver(mBluetoothScoReceiver, filter);
}
 

@SuppressWarnings({"deprecation", "synthetic-access"})
@Override
public void onReceive(Context context, Intent intent) {
    String action = intent.getAction();

    if (action.equals(BluetoothDevice.ACTION_ACL_CONNECTED)) {
        BluetoothDevice mConnectedHeadset = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
        BluetoothClass bluetoothClass = mConnectedHeadset.getBluetoothClass();
        if (bluetoothClass != null) {
            // Check if device is a headset. Besides the 2 below, are there other
            // device classes also qualified as headset?
            int deviceClass = bluetoothClass.getDeviceClass();
            if (deviceClass == BluetoothClass.Device.AUDIO_VIDEO_HANDSFREE
                    || deviceClass == BluetoothClass.Device.AUDIO_VIDEO_WEARABLE_HEADSET) {
                // start bluetooth Sco audio connection.
                // Calling startBluetoothSco() always returns faIL here,
                // that why a count down timer is implemented to call
                // startBluetoothSco() in the onTick.
                mAudioManager.setMode(AudioManager.MODE_IN_COMMUNICATION);
                mIsCountDownOn = true;
                mCountDown.start();

                // override this if you want to do other thing when the device is connected.
                onHeadsetConnected();
            }
        }

        Log.d(TAG, mConnectedHeadset.getName() + " connected");
    } else if (action.equals(BluetoothDevice.ACTION_ACL_DISCONNECTED)) {
        Log.d(TAG, "Headset disconnected");

        if (mIsCountDownOn) {
            mIsCountDownOn = false;
            mCountDown.cancel();
        }

        mAudioManager.setMode(AudioManager.MODE_NORMAL);

        // override this if you want to do other thing when the device is disconnected.
        onHeadsetDisconnected();
    } else if (action.equals(AudioManager.ACTION_SCO_AUDIO_STATE_CHANGED)) {
        int state = intent.getIntExtra(AudioManager.EXTRA_SCO_AUDIO_STATE,
                AudioManager.SCO_AUDIO_STATE_ERROR);

        if (state == AudioManager.SCO_AUDIO_STATE_CONNECTED) {
            mIsOnHeadsetSco = true;

            if (mIsStarting) {
                // When the device is connected before the application starts,
                // ACTION_ACL_CONNECTED will not be received, so call onHeadsetConnected here
                mIsStarting = false;
                onHeadsetConnected();
            }

            if (mIsCountDownOn) {
                mIsCountDownOn = false;
                mCountDown.cancel();
            }

            // override this if you want to do other thing when Sco audio is connected.
            onScoAudioConnected();

            Log.d(TAG, "Sco connected");
        } else if (state == AudioManager.SCO_AUDIO_STATE_DISCONNECTED) {
            Log.d(TAG, "Sco disconnected");

            // Always receive SCO_AUDIO_STATE_DISCONNECTED on call to startBluetooth()
            // which at that stage we do not want to do anything. Thus the if condition.
            if (!mIsStarting) {
                mIsOnHeadsetSco = false;

                // Need to call stopBluetoothSco(), otherwise startBluetoothSco()
                // will not be successful.
                mAudioManager.stopBluetoothSco();

                // override this if you want to do other thing when Sco audio is disconnected.
                onScoAudioDisconnected();
            }
        }
    }
}