问题描述
我很困惑，当一个人会选择的AsyncTask了处理程序。说我有一些code我想运行每n秒，这将更新UI。为什么我会选择一个比其他？
I'm confused as to when one would choose AsyncTask over a Handler. Say I have some code I want to run every n seconds which will update the UI. Why would I choose one over the other?
推荐答案
IMO，AsyncTask的编写提供了方便，易于使用的方式来实现在Android应用程序的后台处理，而不用担心太多的低级详细信息（线程，消息循环等）。它提供了回调方法，帮助安排任务，并以在需要时方便地更新UI。
IMO, AsyncTask was written to provide a convenient, easy-to-use way to achieve background processing in Android apps, without worrying too much about the low-level details(threads, message loops etc). It provides callback methods that help to schedule tasks and also to easily update the UI whenever required.
然而，值得注意的是，使用的AsyncTask时，显影剂被提交到它的局限性，这导致由于设计决定的类的作者注意到是重要的。对于如最近，我发现有一个限制，可以使用AsyncTasks安排作业的数量。
However, it is important to note that when using AsyncTask, a developer is submitting to its limitations, which resulted because of the design decisions that the author of the class took. For e.g. I recently found out that there is a limit to the number of jobs that can be scheduled using AsyncTasks.
处理程序更加透明两个，可能给你更多的自由;所以如果你想要的东西更多的控制，你会选择处理程序，否则AsynTask会工作得很好。
Handler is more transparent of the two and probably gives you more freedom; so if you want more control on things you would choose Handler otherwise AsynTask will work just fine.
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