PROXIMITY_SCREEN_OFF_WAKE_LOCK正在導致音頻播放問題

Question

我正在開發VOIP應用程序，並使用PROXIMITY_SCREEN_OFF_WAKE_LOCK喚醒鎖，如下圖所示。

我注意到在很多設備上，當接近傳感器打開並且屏幕變黑時，我的應用的音頻播放停止。這發生在HTC，LG和華爲設備上。

當傳感器被觸發時，是否還需要做其他事情來阻止音頻播放停止？我注意到其他VOIP應用程序（如Skype）也存在同樣的問題。

int PROXIMITY_SCREEN_OFF_WAKE_LOCK = 32;  
mProximityWakeLock = pm.newWakeLock(PROXIMITY_SCREEN_OFF_WAKE_LOCK, "myLock"); 
if(!mProximityWakeLock.isHeld()){ 
    mProximityWakeLock.acquire(); 
} 

非常感謝！

Answer 1

我們遇到了同樣的問題。我們真正發現的是，當WakeLock屏幕關閉時，輸入套接字停止接收數據，所以我們向AudioTrack發送零。

爲了改善這一點，我們不幹使用PROXIMITY_SCREEN_OFF_WAKE_LOCK現在正在使用的SensorManager（我們有一個面貌邁向Linphone中碼）：

public class InCallActivity extends Activity implements SensorEventListener { 

    private SensorManager mSensorManager; 
    private Sensor mProximity; 

    public void onAccuracyChanged(Sensor sensor, int accuracy) { 
    } 

    public void onSensorChanged(SensorEvent event) { 
     final Window window = getWindow(); 
     WindowManager.LayoutParams lAttrs = getWindow().getAttributes(); 
     View view = ((ViewGroup) window.getDecorView().findViewById(android.R.id.content)).getChildAt(0); 
     if (event.values[0] > 4) { 
      // turn on screen 
      Log.v("LlamadaActivity", "Encendemos pantalla"); 
      lAttrs.flags &= (~WindowManager.LayoutParams.FLAG_FULLSCREEN); 
      view.setVisibility(View.VISIBLE); 
     } 
     else { 
      // turn off screen 
      Log.v("LlamadaActivity", "Apagamos pantalla"); 
      lAttrs.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN; 
      view.setVisibility(View.INVISIBLE); 
     } 
     window.setAttributes(lAttrs); 
    } 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

     mSensorManager = (SensorManager)getSystemService(SENSOR_SERVICE); 
     mProximity = mSensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY); 
     mSensorManager.registerListener(this, mProximity, SensorManager.SENSOR_DELAY_NORMAL); 

     // Para que la pantalla no se apague, y que la encienda aunque este apagada y bloqueada 
     getWindow().addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD); 
     getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED); 
     getWindow().addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON); 
     getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 
     // 
    } 

    @Override 
    protected void onDestroy() { 
     super.onDestroy(); 
     mSensorManager.unregisterListener(this); 
    } 
}