ListView手动设置高度类

忘是亡心i 2022-05-16 14:30 139阅读 0赞

import android.view.View;
    import android.view.ViewGroup;
    import android.widget.ListAdapter;
    import android.widget.ListView;
    
    /**
     * Created by 2018-10-29 on 10:49.
     * Dscription
     * Author by Administrator
     */
    
    public class ListViewUtil {
        /**
         * 解决ScrollView嵌套ListView只显示一条的问题
         * @param listView
         */
        public static void setListViewHeightBasedOnChildren(ListView listView) {
            // 获取ListView对应的Adapter
            ListAdapter listAdapter = listView.getAdapter();
            if (listAdapter == null) {
                return;
            }
            int totalHeight = 0;
            for (int i = 0, len = listAdapter.getCount(); i < len; i++) {
                // listAdapter.getCount()返回数据项的数目
                View listItem = listAdapter.getView(i,null, listView);
                // 计算子项View 的宽高
                listItem.measure(0, 0);
                // 统计所有子项的总高度
                totalHeight += listItem.getMeasuredHeight();
            }
            ViewGroup.LayoutParams params = listView.getLayoutParams();
            params.height = totalHeight + (listView.getDividerHeight() *
                    (listAdapter.getCount() - 1));
            // listView.getDividerHeight()获取子项间分隔符占用的高度
            // params.height最后得到整个ListView完整显示需要的高度
            listView.setLayoutParams(params);
            listView.invalidate();
        }
        public static void setListViewHeightBasedOnChildren(ListView listView,int Height) {
            // 获取ListView对应的Adapter
            ListAdapter listAdapter = listView.getAdapter();
            if (listAdapter == null) {
                return;
            }
            int totalHeight = 0;
            for (int i = 0, len = listAdapter.getCount(); i < len; i++) {
                // listAdapter.getCount()返回数据项的数目
                View listItem = listAdapter.getView(i,null, listView);
                // 计算子项View 的宽高
                listItem.measure(0, 0);
                // 统计所有子项的总高度
                totalHeight += listItem.getMeasuredHeight()+10;
            }
            ViewGroup.LayoutParams params = listView.getLayoutParams();
            params.height = totalHeight + (listView.getDividerHeight() *
                    (listAdapter.getCount() - 1))+Height;
            // listView.getDividerHeight()获取子项间分隔符占用的高度
            // params.height最后得到整个ListView完整显示需要的高度
            listView.setLayoutParams(params);
            listView.invalidate();
        }
    }