B4J Question Change Background Color of Expandable CLV

GuyBooth · Jun 7, 2019

I'm working with an expandable CLV. With a slightly modified version of the original demo (attached) from this forum I have just three items, leaving a blank space below them. I have changed the background color of the items to a dark green color (which works fine) but the empty area below the items (circled in blue in the picture below) remains a non-descript gray. I have tried changing every color I can think of to make this dark green to match the Item panels background color, but no luck.

How can I change this color?

mangojack · Jun 8, 2019

You just need to set the background color of the CLV to transparent. You need to add a CSS file with the following ...

B4X:

.scroll-pane{
   -fx-background-color:transparent;
}
.scroll-pane .viewport {
       -fx-background-color: transparent;
}

See this thread for more info .. https://www.b4x.com/android/forum/threads/xcustomlistview-empty-background-color.94565/

I tested the alternative method / code suggested by @stevel05 in post #4 .. which worked also.

GuyBooth · Jun 8, 2019

mangojack said:
I tested the alternative method / code suggested by @stevel05 in post #4 .. which worked also.

Thanks mj, this suits me better than using the CSS file … but why does the call have to be subdelayed, rather than direct? (Just curious, the direct call doesn't work and the delayed call does).

mangojack · Jun 9, 2019

GuyBooth said:
but why does the call have to be subdelayed, rather than direct?

after a test .. any call to the sub AFTER the form is loaded / shown works ..

B4X:

CallSub3(Me,"SetScrollPaneBackgroundColor",clv1,0xFF008000)
'OR
SetScrollPaneBackgroundColor(clv1,0xFF008000)

ps: it has just occurred to me that the CSS style method sets the background transparent .. but this sub code actually colors the background. ?
Either way it achieves the desired result.

B4J Question Change Background Color of Expandable CLV

GuyBooth

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mangojack

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GuyBooth

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mangojack

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B4J Question Change Background Color of Expandable CLV

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