Bug in CupertinoTimePickerState on Android Emulator

[StefanOltmann]

I have to report a minor glitch:

For some reason the CupertinoTimePickerState changes it values on the first time the CupertinoTimePicker is shown. It decreases hours and minutes down by one.

Interestingly this does not happen on JVM Desktop and it couldn't reproduce it on a real device. As far as I can see this happens only on Android Emulator (running Android 14).

I tried changing locale and timezone, but that did not help.

Maybe you want to see if it could happen on a real device, too.

android_emulator.mov

jvm_desktop.mov

[alexzhirkevich]

Can you try it without expanding animation? The state of wheel pickers is higly depend on composed content because it is produced by the layoutInfo of the lazy list. So state may break if it doesn't compose all its children during the initial composition

[StefanOltmann]

I removed the AnimatedVisibility for testing purposes, but in this case that does not seem to be the problem.

[alexzhirkevich]

Unfortunately, this is how this picker is designed. You can try different animations such as scale, slide and fade.

In such partucilar case scaleIn with TransformOrigin(1f,1f) will probably even look better

[StefanOltmann]

Even with no animation it's broken. I changed the AnimatedVisibility to a simple if (showTimePicker).

Also this does not really explain why it's just not working in the Emulator.

But until someone discovers this happening on a real device we can close the issue.

[alexzhirkevich]

Btw, this picker isn't work as it should on desktop because of the same bug with snapping behavior for trackpad

[alexzhirkevich]

Do your emulator and android device both have AM picker? It isn't displayed on your desktop clip. May be the issue is in it? You can set time format manually in the state constructor

[StefanOltmann]

I tried with and without. The bug also happens if I force the 24h format.

Is it not reproducible for you?