Expandablelistview 组标题单击时失去焦点

Question

我有一个可展开的列表视图，一次打开一个组标题，也就是说，只要我单击一个组标题，我就会关闭以前打开的组标题。每当我第一次单击组标题时，它的行为正常，但随后单击组标题会将单击的组标题从视图中推到顶部。如何让组头保持在顶部？

list.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {
        @SuppressLint("NewApi")
        @Override
        public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) {
         //   parent.smoothScrollToPositionFromTop(groupPosition, 0);
            parent.setSelectionFromTop(groupPosition,0);

            return false;
        }
    });
    list.setOnGroupExpandListener(new ExpandableListView.OnGroupExpandListener() {


        @Override
        public void onGroupExpand(int groupPosition) {
            if (lastExpandedPosition != -1 && groupPosition != lastExpandedPosition) {
                list.collapseGroup(lastExpandedPosition);
            }
            lastExpandedPosition = groupPosition;
        }
    });

Answer 1

在您的 onGroupClick() 方法中使用以下代码。一旦我以这种方式解决了。希望对你有帮助

Handler handler = new Handler();
handler.postDelayed(new Runnable() {
    @Override
    public void run() {
        parent.smoothScrollToPositionFromTop(groupPosition, 0);
    }
},100);