等待T时间推出前的动作？ [英] wait t time before launch an action?

问题描述

其实我有一个multiautocompletetextview，在那里我打电话主机后3个字符有一个动态的搜索列表。
但是，如果用户把别人的人物，我的code呼叫主机为他们每个人。所以它必须是很长的。

I actually had a multiautocompletetextview, where i call host after 3 characters to have a dynamic search list. But if the user put others characters, my code call host for each of them. So it must be very long.

开展行动，以看，如果用户做一个动作与否之前，我可以稍等片刻（约500毫秒）？这是可能的？

Could I wait a moment (about 500 ms) before launching the action , in order to look if user do an action or not ? that's possible ?

推荐答案

您可以使用一个线程separeted。当用户输入的文字，你可以创建一个线程，让它睡500毫秒时，如果键入的文本更改会醒过来检查。

You could use a separeted thread. When the user entered the text you could create a thread, make it sleep for 500ms and when it will wake up check if the text typed is changed.

修改

创建一个处理程序

private Handler h = new Handler();

创建一个可运行，使您的动态搜索

Create a runnable that makes your dynamic search

private Runnable myrunnable = new Runnable() {
   public void run() {
       ....
};

然后打电话给你的onTextChanged可运行像

Then call your runnable in onTextChanged like

h.postDelayed(myrunnable, 500);

请参见处理器获得更多选项/信息

请确保您的线程将以一致的方式访问内存！

Make sure that your threads will access the memory in a consistent way!

这篇关于等待T时间推出前的动作？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！