Android之ScrollView嵌套ListView

public class Utility {
           public  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);
                         listItem.measure(0, 0);  //计算子项View 的宽高
                         totalHeight += listItem.getMeasuredHeight();  //统计所有子项的总高度
                  }
                 
                  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);
           }
    }