Android Question XCustomListview and BBListItem Text is not visible

[Addo]

i have followed this example

[B4X] BBListItem - BCTextEngine inside CLV

BBCodeView is a scrollable view by itself. Trying to put it inside a CLV will cause all kinds of problems. BBListItem is a modified version of BBCodeView, which is built for being contained in a CLV. Among other things, it only draws the currently visible text. It was written originally for the...

www.b4x.com

but when ever I add items the text in bblistitem doesn't show at all.

what i am doing wrong in the attached Project ?

 

[Addo]

Well i didn't notice the part of the scroll change event.. But right to left language still doesn't shows correctly in Bblistitem. But works fine in BBCodeView.. Thats confusing

 

[Erel]

Add TextEngine.RTLAware = True.

 

[Addo]

Is it possible in the future to avoid using scroll change event i guess looping in huge list can be a bit laggy

 

[Erel]

On the contrary. The scroll change event is used to limit the drawing to the visible area.

Make sure to test it in release mode.

 

[Addo]

I am suggesting to use visible change event instead to avoid looping to the whole list. i tried to play around but i see it needs the offset of the item to draw the text. I have tested with 100 items works fine and smooth but with 1000 items can be a bit laggy since scroll change event loops through the whole list

 

[Erel]

The scroll changed is required here as we don't want to draw full items if that isn't needed.

I don't think that the lag is related to that loop but you can optimize it and only go over the visible items. It is a simple change.

More importantly is to implement lazy loading and only add visible items.