Question

我有片段和服务，我想在执行任务后从服务更新Fragment的UI（listview），所以我创建了一个BroadcastReceiver，但没有调用onReceive方法。请建议。

这是我的代码： MyReciever：

 public class Myreceiver extends BroadcastReceiver{

            @Override
            public void onReceive(Context context, Intent intent) {
                // TODO Auto-generated method stub
                Log.d("TAG" , "onrecive::");
                refreshView();
            }

        }

onREsume / onPause of fragment：

@Override
public void onResume() {
    super.onResume();
    Log.d(TAG, tag + " onResume() called");
    Log.d("TAG" , "nibha :: test on resume " +DeliveryOrder.isSyncDone );

    getActivity().registerReceiver(myrec,
            new IntentFilter("com.Mediapp."+tag+".SYNC_FINISH"));

    mDOListAdapter.notifyDataSetChanged();
    Log.d(TAG, tag + " onResume() ended");
}

@Override
public void onPause() {
    super.onPause();
    Log.d(TAG, tag + " onPause called");
    getActivity().unregisterReceiver(myrec);
    Log.d(TAG, tag + " onPause ended");
}

onService：

Log.d("TAG" , "nibha :: test " +DeliveryOrder.isSyncDone );
            Intent in= new Intent();
            in.setAction("com.Mediapp."+tag+".SYNC_FINISH");
            sendBroadcast(in);
            Log.d("nibha", "onHandleIntent: sending broadcast");

Answer 1

在Android Manifest中注册BroadcastReceiver。

<receiver android:name=".Myreceiver">
        <intent-filter>
            <action android:name="android.intent.action.PHONE_STATE" />
        </intent-filter>
</receiver>

在onResume()方法中，将布尔值保存在SharedPreferences。

中

SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(this);
SharedPreferences.Editor e = settings.edit();

e.putBoolean("action_performed", true);
e.commit();

现在onReceive()方法BroadcastReceiver检查 action_performed 是否为真。如果是，那就做你想做的事。

@Override
public void onReceive(Context context, Intent intent) {
    // TODO Auto-generated method stub
    Log.d("TAG" , "onrecive::");

    SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(context);
    boolean actionDone = settings.getBoolean("action_performed", false);

    if(actionDone) {
        refreshView();
    }
}

没有调用BroadcastReceiver的onReceive方法

1 个答案: