I'm having a weird problem with nested AndroidView...

# compose

[vide]

I'm having a weird problem with nested AndroidViews: content inside AndroidViews doesn't render initially when the activity comes back from the background. A recomposition will trigger rendering again.

EDIT: The problem is actually this: View.onDraw is never called for `AndroidView`s in my composition after onResume when activity comes back from background. Any ideas what could be causing this?

[yschimke]

I don't have an answer, but is it all views inside the AndroidView or just some. Google Maps MapView has a bunch of lifecycle events that you used to have to wire up yourself when embedding in compose.

[vide]

I'm seeing this on at least SurfaceView and RecyclerView . What makes it even more confusing is that it happens only on specific hardware, can't reproduce on emulator Actually I can, I was trying with a wrong API level...

[vide]

(So everything inside AndroidView)

[vide]

I also think there might be some kind of race condition involved as it only happens ~90% of the time. It might also be that there's some extra recomposition happening randomly that makes it work

[vide]

Actually, no, recomposition doesn't seem to help. I added logging to the AndroidView's update block to confirm it is recomposing, but still no pixels on screen

[vide]

Making some progress in investigating. It seems like View.draw is normally called soon after onResume:

00:03:18.858  D  Main Activity onResume
00:03:18.887  W  Drawing to canvas.

However on my hardware the draw call never happens. No wonder nothing is rendered 😅

[vide]

Okay, investigation complete! This is actually a filed bug: https://issuetracker.google.com/issues/244274006

[vide]

I am using an older compose version so don't benefit of the fix, but I will implement something similar manually

[louiscad]

Why don't you just update Compose UI?