anroid中ScrollView嵌套ListView

有时候项目里面需要ScrollView嵌套ListView,但是正常下ListView只会显示一行多一点，解决方法就是填充ListView数据后重新计算ListView的高度，这里有两种方法来实现。

第一种方法：重写ListView

package com.jwzhangjie.test;import android.content.Context;import android.util.AttributeSet;import android.widget.ListView;public class MyListView extends ListView{public MyListView(Context context) {super(context);}public MyListView(Context context, AttributeSet attrs) {super(context, attrs);}        @Override        protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {                int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,                                MeasureSpec.AT_MOST);                super.onMeasure(widthMeasureSpec, expandSpec);        }}

第二种方法：添加完数据后计算ListView中所有Item的高度和间隔线的高度然后重新设置ListView的高度

public void setListViewHeightBasedOnChildren(ListView listView) {ListAdapter listAdapter = listView.getAdapter();if (listAdapter == null)return;if (listAdapter.getCount() <= 1)return;int totalHeight = 0;View view = null;for (int i = 0; i < listAdapter.getCount(); i++) {view = listAdapter.getView(i, null, listView);view.measure(0,0);totalHeight += view.getMeasuredHeight();}ViewGroup.LayoutParams params = listView.getLayoutParams();params.height = totalHeight+ (listView.getDividerHeight() * (listAdapter.getCount() - 1));listView.setLayoutParams(params);listView.requestLayout();}

设置完数据后，调用setListViewHeightBasedOnChildren(listview);

注意：ListView的item只能使用LinearLayout包含