How to add items at top of ListView with scrolling without stuck?

Question

I am working on chat application in which I have to manage thousands of chat messages list by paging but my problem is that when I am adding items at the top of ListView adapter during fast scrolling and applying setSelectionFromTop(index, y)...by this my list scrolling getting stuck on index...

 adapter.setData(listChatMessage);
 adapter.notifyDataSetChanged();

 View v = threadList.getChildAt(0);
 int top = (v == null) ? 0 : v.getTop();

 listView.setSelectionFromTop(index, top);

So how can we add items at the top of ListView with scrolling without stuck. What approach should I use.

Can anyone suggest me?

why don't you wait for the scrolling to be stopped before adding new data at top? — Rahul, Nov 08 '17 at 13:11

score 0 · Answer 1 · answered Nov 08 '17 at 13:18

0

If im not wrong take look at this

How to get the scroll speed on a ListView?

then set listView.fling(int velocityY)

answered Nov 08 '17 at 13:18

sigma119

102
6

score 0 · Accepted Answer · answered Nov 10 '17 at 12:01

0

After a long search I found satisfactory post.

https://chris.banes.me/2013/02/21/listview-keeping-position/

answered Nov 10 '17 at 12:01

hharry_tech

952
1
8
24

How to add items at top of ListView with scrolling without stuck?

2 Answers2