接收广播后,后台服务被杀死

时间:2013-03-24 17:35:08

标签: android service broadcastreceiver

我有一个广播接收器,可以从Android的android.intent.action.DOWNLOAD_COMPLETE课程中接收下载完成DownloadManager。广播接收器在XML中定义如下:

<receiver android:name=".DownloadReceiver" >
  <intent-filter>
    <action android:name="android.intent.action.DOWNLOAD_COMPLETE" />
  </intent-filter>
</receiver>

如果我保持活动正常运行,那么每件事情都会很好。但是,如果在后台运行服务时活动未运行,则每次DOWNLOAD_COMPLETE广播进入时都会导致后台服务器被杀死。

广播接收者是:

public class DownloadReceiver extends BroadcastReceiver {
    public void onReceive(Context context, Intent intent) {
       // it will cause MyService to be killed even with an empty implementation!
   }
}

服务是:

public class MyService extends Service {

    @Override
    public IBinder onBind(Intent intent) {
        Log.w(TAG, "onBind called");

        return null;
    }

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

        Log.w(TAG, "onCreate called");

    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        super.onStartCommand(intent, flags, startId);

        Log.w(TAG, "onStartCommand called");

        return START_NOT_STICKY;
    }

    @Override
    public void onDestroy() {
        super.onDestroy();

        Log.w(TAG, "onDestroy called");
    }
}

活动启动服务:

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

            startService();
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.activity_main, menu);

    return true;
}

public void startService() {
    Intent start = new Intent(getApplicationContext(), MyService.class);
    startService(start);
}

public void stopService() {
    Intent stop = new Intent(getApplicationContext(), MyService.class);
    stopService(stop);
}
}

知道为什么服务在活动未运行时被广播杀死了?

谢谢!

1 个答案:

答案 0 :(得分:0)

您从哪里拨打stopService()

如果您使用Activity onPause()onStop()onDestroy()拨打电话,则每次离开Service时{0}都会停止{1}}或当Activity被系统销毁时。

我发现Activity或系统广播与您发布的代码中的BroadcastReceiver之间没有任何关联。

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