B4J Question [SOLVED] Customlistview jumps to top

Revisable5987 · Jun 16, 2020

If I set a button as Visible = False the CLV will jump to the top.

I can make the clv return to the correct place with 'VPosition' but the list first moves to the top and then to where I want it.

Is there anything I can do to stop the clv moving in the first place? using sleep(300) helps, but not always.

Example project attached. Scroll to the bottom and press the button.

LucaMs · Jun 16, 2020

I think that the best you can obtain is using:

B4X:

btn.Visible = False
Sleep (0)
CustomListView1.JumpToItem(CustomListView1.Size - 1)

It seems to be a bug, so without changing the xCustomListView source code...!

Erel · Jun 16, 2020

Tricky indeed. It is related to the focus moving from the clicked button to the first button.
Workaround is to explicitly set the focus:

B4X:

btn.Visible = False
p.RequestFocus

Revisable5987 · Jun 16, 2020

Thanks guys

gregchao · Dec 12, 2020

I ran into a similar problem where I wanted to jump to the bottom of list and it would not respond. After stuggling a little, I solved it by using:

B4X:

Dim n As Int = CLVConversation.size         
CLVConversation.JumpToItem(n - 1)
'next 2 lines needed to ensure jumpto last line
Sleep(0)
CLVConversation.JumpToItem(n - 1)

I am not quite sure why it works though....

B4J Question [SOLVED] Customlistview jumps to top

Revisable5987

Member

Attachments

LucaMs

Expert

Erel

B4X founder

Revisable5987

Member

gregchao

Active Member

Similar Threads

B4J Question [SOLVED] Customlistview jumps to top

Revisable5987

Member

Attachments

LucaMs

Expert

Erel

B4X founder

Revisable5987

Member

gregchao

Active Member

Similar Threads

Privacy & Transparency

Privacy & Transparency