Android Question B4XView Snapshot does not capture elevation

Blueforcer

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If i request a snapshot of some panels with elevations

B4X: 
Dim root As B4XView = Activity
root.snapshot

From this


Results in this:



Also the fontcolors are not the same.

How can i get a snapshot of the actual looking activity?
 
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Erel

B4X founder
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B4XView.Snapshot asks the view to draw itself on a canvas.
The shadows are indeed missing. I can only guess that the shadows are not part of the views tree and are added as a special effect in a different way.
There is no other way to capture a view, other than taking a real screenshot which has many restrictions.
 
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Blueforcer

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Longtime User
Thanks, as I read on other forums it's because Shadows (Elevation In API25+) are hardware accelerated and is rendered outside of the views pipeline and therefore are not available for caching at the view level.

Too bad I wanted to use the transition effect.

[B4X] Animated change of theme / layouts

This is an example that demonstrates how Root.Snapshot + 2 BitmapCreators, with the old and new layouts can be used to create a nice transition between two layouts. Private Sub SetNewTheme As ResumableSub If bc1.IsInitialized = False Then bc1.Initialize(Root.Width, Root.Height)...
www.b4x.com
 
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