Question

清单：

<receiver android:name=".GpsLocationReceiver">
    <intent-filter>
        <action android:name="android.location.PROVIDERS_CHANGED" />
        <category android:name="android.intent.category.DEFAULT" />
    </intent-filter>
</receiver>

广播接收器：

public class GpsLocationReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        Log.d(TAG, "onReceive...");
        if(intent.getAction().matches("android.location.PROVIDERS_CHANGED")) {
            Log.d(TAG, "GPS provider changed...");
            EventBus.getDefault().postLocal(intent.getAction());
        }
    }

}:

Answer 1

我遇到了同样的问题，但我找不到问题的根源。它似乎是设备或操作系统版本特定的问题。

要知道消息已被调用，你可以有一个静态布尔值，它在connect和disconnect之间切换，只在你收到一个连接并且boolean为true时调用你的子例程。类似的东西：

  private static boolean firstConnect = true;

  @Override
  public void onReceive( Context context, Intent intent )
  {
      //Receive called twice because of device or OS version specific issue.  
      final LocationManager manager = (LocationManager) context.getSystemService( Context.LOCATION_SERVICE );

      if (manager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {

          //enable
          if(firstConnect){
              sendStatus("on",context);
              firstConnect=false;
          }

      }else{

          //disable
          if(!firstConnect){
              sendStatus("off",context);
              firstConnect=true;
          }
      }
  }

Answer 2

为什么不检查接收器中是否启用了GPS提供商？

lm = (LocationManager) context.getSystemService(LOCATION_SERVICE);
isGPSEnabled = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);

关闭GPS时，广播接收器被叫2次？

2 个答案: