我在哪里可以延长AsyncTask的？ [英] Where do I extend the AsyncTask?

问题描述

我有包含以下元素的登录系统：

I have a login system consisting of the following elements:

LoginActivity使用的LoginController使用RESTClient实现调用与执行）的Web服务（。我想被异步执行调用Web服务，但我还需要一个对话框，同时呼叫正在作出通知的相关信息的用户。执行不返回任何东西。

LoginActivity uses LoginController uses RestClient to call a web service with Execute(). I want the call to the web service to be performed asynchronously but I also need a dialog box to notify the user of relevant information while the call is being made. Execute does not return anything.

我将如何去这样做呢？我在哪里可以使用AsyncTask的？

How will I go about doing this ? Where do I use AsyncTask ?

推荐答案

AsyncTask的有几个方法，可以帮助你与此有关。

AsyncTask has a few methods that will help you with this.

延长AsyncTask的：

Extend the AsyncTask:

public class MyTask extends AsyncTask<Object, Void, Void>

  @Override
  protected void onPreExecute() {
    // show progress dialog
  }

  @Overrride
  protected Void doInBackground(Object... params) {
    HttpUriRequest req = (HttpUriRequest) params[0];
    String myString = (String) params[1];

    // connect
    return null;
  }

  @Override
  protected void onPostExecute(Void result) {
    // hide dialog
  }
}

要带参数执行此，试试这个：

To execute this with parameters, try this:

myTask.execute(request, "aString");

在哪里请求类型HttpUriRequest的对象。记住的事情参数的顺序。

Where request is an object of type HttpUriRequest. Remember the order of the parameters matter.

如果你想在服务处于连接您可以使用此方法RASEL说要更新状态：

If you want to update the status while the service is connecting you can use this method as Rasel said:

onProgressUpdate() {
  // Update view in progress dialog
}

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