我在互联网上经历了一些应该工作的教程,他们都使用了LocalBroadcastManager,顺便说一句是Android推荐的：

If you don’t need to send broadcasts across applications,consider
using this class with LocalBroadcastManager instead of the more
general facilities described below.

我真的失去了一天,找出问题为什么它对我不起作用：它只有在我使用Context.sendBroadcast()时才有效.和Context.registerReceiver()而不是LocalBroadcastManager方法.

现在我的应用程序正在运行,但我觉得我反对最佳做法,我不知道为什么.
任何想法为什么会发生？

编辑：

在我写完这个问题后,我进一步研究了这个问题. LocalBroadcastManager通过Singleton工作,因为我们应该调用LocalBroadcastManager.getInstance(this).method().我记录了两个实例(在Activity和Service中),它们有不同的内存地址.
现在我来到另一个问题,服务是否应该与调用它的Activity具有相同的Context？从this article开始,服务在主线程上运行,因此我认为Context将是
相同.

有什么想法吗？ (对不起,长篇文章)

代码示例：

为MyService

public class MyService extends Service {

...

// When an event is triggered,sends a broadcast

Intent myIntent = new Intent(MainActivity.MY_INTENT);
myIntent.putExtra("myMsg","msg");
sendBroadcast(myIntent);

// PrevIoUsly I was trying:
// LocalBroadcastManager.getInstance(getApplicationContext()).sendBroadcast(myIntent);

}

MyActivity

public class MainActivity {

...

private BroadcastReceiver messageReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context,Intent 
            Log.d("onReceive","received!");
            // TODO something
        }
    };

@Override
protected void onResume() {
    super.onResume();
    registerReceiver(messageReceiver,new IntentFilter(MY_INTENT));
    // PrevIoUsly I was trying:
    // LocalBroadcastManager.getInstance(getApplicationContext()).registerReceiver(messageReceiver,new IntentFilter(MY_INTENT));
}
}