Android，我可以将 AsyncTask 放在单独的类中并进行回调吗?

本文介绍了Android，我可以将 AsyncTask 放在单独的类中并进行回调吗?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我只是在学习 AsyncTask 并希望将它用作一个单独的类，而不是一个子类.

I'm just learning about AsyncTask and want to use it as a separate class, rather then a subclass.

例如

class inetloader extends AsyncTask<String, Void, String> { @Override protected String doInBackground(String... urls) { String response = ""; DefaultHttpClient client = new DefaultHttpClient(); HttpGet httpGet = new HttpGet(urls[0]); try { HttpResponse execute = client.execute(httpGet); InputStream content = execute.getEntity().getContent(); BufferedReader buffer = new BufferedReader( new InputStreamReader(content)); String s = ""; while ((s = buffer.readLine()) != null) { response += s; } } catch (Exception e) { e.printStackTrace(); } return response; } @Override protected void onPostExecute(String result) { Log.e("xx",result); // how do I pass this result back to the thread, that created me? } }

和主(ui)线程:

inetloader il = new inetloader(); il.execute("www.google"); //il.onResult() //{ ///do something... //}

谢谢！

推荐答案

使用接口.类似的东西:

Use a interface. Something like:

interface CallBackListener{ public void callback(); }

然后在您的 UI 线程中执行此操作:

Then do this in your UI thread:

inetloader il = new inetloader(); li.setListener(this); il.execute("www.google");

在inetloader中，添加:

In inetloader, add:

CallBackListener mListener; public void setListener(CallBackListener listener){ mListener = listener; }

然后在 postExecute() 中，执行:

then In postExecute(), do:

mListener.callback();