Scrollview嵌套listviwe简单解决方案

最新推荐文章于 2024-03-25 00:54:18 发布

沐怡旸--指针诗笺

最新推荐文章于 2024-03-25 00:54:18 发布

阅读量1k

点赞数

CC 4.0 BY-SA版权

本文链接：https://blog.youkuaiyun.com/lonewolf521125/article/details/46044461

android 同时被 3 个专栏收录

134 篇文章

订阅专栏

listview

3 篇文章

订阅专栏

scrollview

2 篇文章

订阅专栏

本文介绍了解决ListView在嵌套于ScrollView时无法完全显示的问题。通过设置ListView的触摸监听器并调整其高度，使得所有条目都能正确展示。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

原文链接

The shortest & easiest solution for the ListView inside a ScrollView problem.

You do not have to do anything special in layout.xml file nor handle anything on the parent ScrollView. You only have to handle the child ListView. You can also use this code to use any type of child view inside a ScrollView & perform Touch operations.

Just add these lines of code in your java class :

ListView lv = (ListView) findViewById(R.id.layout_lv);
lv.setOnTouchListener(new OnTouchListener() { 
    // Setting on Touch Listener for handling the touch inside ScrollView 
    @Override 
    public boolean onTouch(View v, MotionEvent event) {
    // Disallow the touch request for parent scroll on touch of child view 
    v.getParent().requestDisallowInterceptTouchEvent(true);
    return false; 
    } 
});

If you put ListView inside a ScrollView then all the ListView does not stretch to its full height. Below is a method to fix this issue.

/**** Method for Setting the Height of the ListView dynamically. 
 **** Hack to fix the issue of not showing all the items of the ListView 
 **** when placed inside a ScrollView  ****/ 
public static void setListViewHeightBasedOnChildren(ListView listView) {
    ListAdapter listAdapter = listView.getAdapter();
    if (listAdapter == null)
        return; 

    int desiredWidth = MeasureSpec.makeMeasureSpec(listView.getWidth(), MeasureSpec.UNSPECIFIED);
    int totalHeight = 0;
    View view = null;
    for (int i = 0; i < listAdapter.getCount(); i++) {
        view = listAdapter.getView(i, view, listView);
        if (i == 0)
            view.setLayoutParams(new ViewGroup.LayoutParams(desiredWidth, LayoutParams.WRAP_CONTENT));

        view.measure(desiredWidth, MeasureSpec.UNSPECIFIED);
        totalHeight += view.getMeasuredHeight();
    } 
    ViewGroup.LayoutParams params = listView.getLayoutParams();
    params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1));
    listView.setLayoutParams(params);
    listView.requestLayout();
}

To use this method just pass the ListView inside this method :

ListView list = (ListView) view.findViewById(R.id.ls);
setListViewHeightBasedOnChildren(list);

For using with ExpandableListView - credit Benny

ExpandableListView: view = listAdapter.getView(0, view, listView); 
int widthMeasureSpec = View.MeasureSpec.makeMeasureSpec(ViewGroup.LayoutParams.MATCH_PARENT, View.MeasureSpec.EXACTLY);
int heightMeasureSpec = View.MeasureSpec.makeMeasureSpec(ViewGroup.LayoutParams.WRAP_CONTENT, View.MeasureSpec.EXACTLY);
view.measure(widthMeasureSpec, heightMeasureSpec);