[随手记]ScrollView嵌套ExpandableListView展开问题

来源：互联网发布：国民经济数据编辑：程序博客网时间：2024/05/21 06:00

太懒，直接上代码：

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);            }        });

这样就可以保证，无论展开还是收缩，ExpandableListView都重新计算高度。

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