如何从服务发送消息到活动 [英] how to send message from service to activity

问题描述

我构建创建服务的AsyncTask的，现在我想从服务发送到AsyncTask的消息。
在AsyncTask的我的code是：

I build an AsyncTask that create a service and now I want to sent from service to AsyncTask message. my code on the AsyncTask is:

  class ResponseHandler extends Handler {
  public void handleMessage(Message message) {
       // Toast.makeText(this, "message from service",Toast.LENGTH_SHORT).show();
 }

希望它能够处理来自服务的消息纠正我，如果我错了。

hope that it will handle the message from service correct my if I wrong.

和从服务中试图做到这一点。

and from service tried to do this

     Message message = Message.obtain(null, MyService.ADD_RESPONSE_HANDLER);
     message.replyTo = messenger;
      try {
             myService.send(message);
             catch (RemoteException e) {
             e.printStackTrace();
         }

但我的错误是无法找到行代码：

but my errors are cannot find symbol in lines:

 MyService.ADD_RESPONSE_HANDLER
  message.replyTo = messenger;
  try {
  myService.send(message);

我需要什么补充？请给我一个code，将做的工作。非常感谢。

What do I need to add? Please give me a code that will do the work. thanks a lot.

推荐答案

一种方法是使用 ResultReceiver 。这是我最近张贴着为例我的完整的博客文章。

One way is using ResultReceiver. Here is my complete blog post which I had recently posted with an Example.

如何从更新活动使用ResultReceiver服务

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