BroadcastReceiver的onReceive方法没有调用吗？

我正在运行一项正在获取位置更新的服务。服务成功返回位置。但是之后，我尝试将位置广播给可能正在监听的任何活动。我已经在活动中注册了接收者，但由于某种原因onReceive未调用该方法。这是onLocationChanged服务内部方法内部的代码。

@Override
public void onLocationChanged(Location location) {
    Intent intent = new Intent();
    intent.setAction("LocationBroadcast");
    double lat = location.getLatitude();
    double lng = location.getLongitude();
    intent.putExtra("lat", lat);
    intent.putExtra("lng", lng);
    //I am initializing the broadcaster object in onCreate method of my service but I am putting it here for simplicity
    broadcaster = LocalBroadcastManager.getInstance(this);
    //This Toast successfully shows my coordinates so I know the problem is not with this method
    Toast.makeText(GoogleFusedLocationApiService.this, ""+lat+", "+lng+"", Toast.LENGTH_SHORT).show();
    broadcaster.sendBroadcast(intent);
}

在我的onCreate方法的活动中，我正在这样注册LocationBroadcast。

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    ...
    ...
    IntentFilter intentFilter = new IntentFilter("LocationBroadcast");
    super.registerReceiver(mMessageReceiver, intentFilter);
    startService(new Intent(MyApp.getAppContext(), GoogleFusedLocationApiService.class));
}

我已经尝试过this.registerReceiver(mMessageReceiver, intentFilter);，LocalBroadcastManager.getInstance(this).registerReceiver(mMessageReceiver, intentFilter);但是都没有用。

这是我的mMessageReceiver定义，

public BroadcastReceiver mMessageReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        double lat = intent.getDoubleExtra("lat", 0);
        double lng = intent.getDoubleExtra("lng", 0);
        // This Toast never shows and neither can I debug this method at all
        // so for now the only conclusion is the broadcast is not being received
        Toast.makeText(MyApp.getAppContext(), "Cordinates are "+lat+", "+lng+"", Toast.LENGTH_SHORT).show();
    }
};

此外，经过研究，我认为某些细节很重要。我之所以没有声明receiver，是manifest因为我读到您仅在希望您的应用程序在收到广播时启动时才这样做，而我只希望我的应用程序在已经运行时做出响应。每当服务发送广播时都不会启动。

我还没有延长活动BroadcastReceiver或者活动以来已经扩展到FragmentActivity

应用程序不会崩溃，并且onLocationChanged位于注册BroadcastReceiver之后正在启动的服务内，因此在广播BroadcastReceiver注册之前不会调用onLocationChanged