使用SearchView延迟对SearchView.OnQueryTextListener中的onQueryTextChange()的调用 [英] Delay call to onQueryTextChange() in SearchView.OnQueryTextListener with SearchView

问题描述

在我的应用程序中使用 SearchView .

Using a SearchView in my application.

无论如何，我可以延迟对onQueryTextChange()方法的调用.例如，当用户键入一个字符序列时，他必须等待此方法被调用.

Is there anyway in which I can make the call to onQueryTextChange() method delayed. Like, when user type a sequence of characters, he must wait before this method gets called.

此等待应该不取决于键入的字符数，但是在方法被点击之前需要稍作停顿.

This wait should not depend on number of characters typed yet but a small pause is required before method being hit.

我想暂停一下，因为当用户在搜索视图中键入内容时，将向服务器发出带有字符串的请求，以请求匹配的数据，然后根据建议填充ListView.

I want to pause because, as the user types into the search view, a request with the string will be made to server to request the matched data, and then I will populate my ListView according to suggestions.

活动信息(如果需要):
实现 SearchView.OnQueryTextListener .

Activity information (if required) :
Implements SearchView.OnQueryTextListener.

    MenuItem searchItem = menu.findItem(R.id.action_search);
    SearchView searchView = (SearchView)MenuItemCompat.getActionView(searchItem);
    searchView.setOnQueryTextListener(this);

推荐答案

要延迟对服务器的调用，请在onQueryTextChange方法中使用以下代码，变量mQueryString和mHandler必须是类变量.还检查mHandler！= null

To delay the call to your server, use the following code in your onQueryTextChange method, the variables mQueryString and mHandler must be class variables. also check mHandler!=null

@Override
public boolean onQueryTextChange(String searchTerm) {
    mQueryString = searchTerm;
    mHandler.removeCallbacksAndMessages(null);

    mHandler.postDelayed(new Runnable() {
        @Override
        public void run() {
           //Put your call to the server here (with mQueryString)
        }
    }, 300);
    return true;
}

这篇关于使用SearchView延迟对SearchView.OnQueryTextListener中的onQueryTextChange()的调用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！