如何定期调用 asyncTasks

How to call asyncTasks periodically(如何定期调用 asyncTasks)

问题描述

我有两个 AsyncTask 进行网络操作.我想定期给他们打电话(比如一分钟后).我怎么做?我不认为我可以在 UI 线程上做到这一点.我需要创建一个新线程吗?是否可以在没有 AlarmManager/Service 的情况下实现这一点?

I have two AsyncTasks doing network operations. I want to call them periodically (like after one min.). How do I do that? I dont think I can do it on the UI thread. Do i need to create a new thread? Is it possible to implemet this without AlarmManager/Service?

基本上我想在一分钟后定期执行这两个语句.

Basically I want to exectue these two statements periodically after one min.

new UploadAsyncTask().execute();
new DownloadAsyncTask().execute();

谢谢

推荐答案

只需使用计时器.

final Handler handler = new Handler();
Timer timer = new Timer();
TimerTask task = new TimerTask() {       
     @Override
     public void run() {
       handler.post(new Runnable() {
          public void run() {  
             new UploadAsyncTask().execute();
             new DownloadAsyncTask().execute();
          }
        });
      }
};
timer.schedule(task, 0, 1000); //it executes this every 1000ms

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