Android tabhost 与异步 HttpClient
我有一个带有选项卡的应用程序,每个选项卡都有 HttpCLient,每次用户单击选项卡时都会触发 HttpCLient,并在 tabActivity 线程中下载页面。当用户点击一个选项卡然后切换到另一个选项卡时,他必须等待几秒钟,以便将请求发送到服务器并收到回复。我想使选项卡之间的切换与 HttpClient 异步。即使我将请求放入线程中它也不起作用,甚至当我在每个选项卡上引入 TabGroupActivity 时它也不起作用。 我有一个单独的类,其中包含对服务器的所有请求。我应该用 asyncTask 扩展这个类吗? (这实际上是我一直在考虑的最后一件事可能有帮助)
编辑: 在每个选项卡上 onPause 我都在执行 Thread.join() nad 似乎该操作会减慢返回同一选项卡的所有过程
I have an application with tabs and every tab has HttpCLient that is triggered every time user clicks on the tab and a page is downloaded in a tabActivity thread. When user clicks on tab and then switches to another one, he must wait for a few seconds, so that the request will be sent to server and reply received. I want to make switching between the tabs asynchronous from the HttpClients. It did not work even when i put requests in threads and it even did not work when I introduced TabGroupActivity on every tab.
I have a separate class with all the requests to the server. SHould i extend this class with asyncTask? (This is actually the last thing i have been thinking about that could help)
EDIT:
On every tab onPause i am doing Thread.join() nad it seems that it is the action that slows down all the process of comming back to the same tab
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为了防止 UI 阻塞,所有可能运行缓慢的操作(例如网络)都应该在后台运行,例如通过某种并发方式(例如 Asynctask)。
我认为 Asynctask 是更好的选择(与线程相比),因为它将所有内容封装到一个类中,并且是原生 android。 (例如,使用此类时不需要使用 RunOnUIThread)
阅读本文以获取更多信息:http://www.vogella.de/articles/AndroidPerformance/article.html
to prevent UI from blocking, all potentially slow running operations (such as networking) should run in the background, e.g. via some way of concurrency such as Asynctask.
I think Asynctask is better choice (comparing with threading) because it encapsulate everything into a single class, and is native android. (e.g. you don't need to use RunOnUIThread when using this class)
read this article for more information: http://www.vogella.de/articles/AndroidPerformance/article.html