[随手记]ScrollView嵌套ExpandableListView展开问题

public static void setListViewHeightBasedOnChildren(ExpandableListView listView) {
    //获取ListView对应的Adapter
    ListAdapter listAdapter = listView.getAdapter();
    if (listAdapter == null) {
        // pre-condition
        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);
}

mAdapter = new ProjectNewAdapter(mContext, groupEntities, exlst);
exlst.setAdapter(mAdapter);
WindowManagerUtil.setListViewHeightBasedOnChildren(exlst);

exlst.setOnGroupExpandListener(new ExpandableListView.OnGroupExpandListener() {

            @Override
            public void onGroupExpand(int groupPosition) {
//                for (int i = 0, count = exlst
//                        .getExpandableListAdapter().getGroupCount(); i < count; i++) {
//                    if (groupPosition != i) {// 关闭其他分组
//                        exlst.collapseGroup(i);
                WindowManagerUtil.setListViewHeightBasedOnChildren(exlst);
//                    }
//                }
            }

        });
        exlst.setOnGroupCollapseListener(new ExpandableListView.OnGroupCollapseListener() {
            @Override
            public void onGroupCollapse(int groupPosition) {
                WindowManagerUtil.setListViewHeightBasedOnChildren(exlst);
            }
        });