关于scrollview和listview嵌套的高度问题,涉及到listview中有自定义组件,高度计算不准确

@Override

    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

        int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,

                MeasureSpec.AT_MOST);

        super.onMeasure(widthMeasureSpec, expandSpec);

    }

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; i < listAdapter.getCount(); i++) { // listAdapter.getCount()返回数据项的数目

            View listItem = listAdapter.getView(i, null, listView);

//            int desiredWidth= View.MeasureSpec.makeMeasureSpec(listView.getWidth(), View.MeasureSpec.AT_MOST);

            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));

        // params.height最后得到整个ListView完整显示需要的高度

        listView.setLayoutParams(params);

    }