在BroadcastReceivers Android之間傳遞數據？

Question

我要BroadCastReceivers：一個是從藍牙低功耗（BLE）監聽數據，另一個用於屏幕狀態如下：

private String sreenState=""; 
public class ScreenStateReceiver extends BroadcastReceiver { 
    @Override 
    public void onReceive(Context context, Intent intent) { 
     if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) { 
      sreenState="screen on"; 

     } else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) { 
      Log.i(TAG, "screen on"); 
      sreenState="screen on"; 
     } 
    } 
} 


private final BroadcastReceiver mGattUpdateReceiver = new BroadcastReceiver() { 
    @Override 
    public void onReceive(Context context, Intent intent) { 
     final String action = intent.getAction(); 

     if (BluetoothLeService.ACTION_DATA_AVAILABLE.equals(action)) { 
      String data=intent.getStringExtra(BluetoothLeService.EXTRA_DATA); 
      Log.d("TAG",sreenState); 
     } 
    } 
} 

在BLE的廣播接收器，我想顯示的當前狀態屏幕通過screenState變量，當ACTION_DATA_AVAILABLE發生時。但是，它總是返回以前的屏幕狀態。例如，屏幕關閉，我收到數據，它會顯示「空」。如果屏幕打開，並且我收到數據，則狀態結果關閉。我認爲這是同步問題。我如何解決它？感謝所有

Answer 1

您也可以閱讀BLE接收器本身中的當前屏幕狀態爲：

mIsScreenOn = ((PowerManager) this.getSystemService(Context.POWER_SERVICE)).isScreenOn();