scrollview嵌套listview导致无法正常显示

这里总结两种方法：

//第一种继承GridView实现它的onMeasurepublic class Mylistview extends Listview {    public MyGridView(Context context, AttributeSet attrs) {        super(context, attrs);    }    public MyGridView(Context context) {        super(context);    }    public MyGridView(Context context, AttributeSet attrs, int defStyle) {        super(context, attrs, defStyle);    }    @Override    public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);        super.onMeasure(widthMeasureSpec, expandSpec);    }}

//第二种public class Utility {    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);            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);    }}