ListView控件onItemClick只得到第一个项目 [英] ListView onItemClick only gets the first item

问题描述

我试图让所选项目的文本，并将其显示在敬酒的消息。这是code我写的：

I'm trying to get the text of the selected item and show it in a toast message. This is the code I wrote:

final ListView lv = (ListView)findViewById(R.id.firstflightlist);
        lv.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                long arg3) {
            TextView c = (TextView) arg0.findViewById(arg1.getId());

            String text = c.getText().toString();
            Toast.makeText(getApplicationContext(), text, Toast.LENGTH_SHORT).show();               
        }});

在ListView是一个单一的选择列表视图。当我点击列表中的任何项目，它始终显示在列表中的第一项。什么导致此？我怎样才能获得所选项目的文字？

The listview is a single choice listview. When I click on any item in the list, it always displays the first item of the list. What might be causing this? How can I get the selected item's text?

推荐答案

您不需要findViewById，你已经得到了你所点击的视图。
也只有findViewById发现该ID匹配的第一个项目，在列表视图中，你已经得到了很多具有相同ID的项目，所以它找到的第一个

you don't need to findViewById, you've got the view you clicked on. also findViewById only finds the first item that matches the id, and in a list view you've got a lot of items with the same id, so it finds the first one

 lv.setOnItemClickListener(new OnItemClickListener() {

    @Override
    public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
            long arg3) {


        TextView c = (TextView) arg1; //<--this one 
        String text = c.getText().toString();
        Toast.makeText(getApplicationContext(), text, Toast.LENGTH_SHORT).show();               
    }});

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