When navigate from one screen to another screen, the new screen show the previous screen as an image above the root view in the compose screen

[AlaaEddinAlbarghoth]

• Library Version [e.g. v0.1.1]
• All devices

The issue
I put Cloudy() above the column I used in Screen B, but when navigating from Screen A to Screen B, the previous screen A is showing in screen B

Expected Behavior:
You can navigate to the new screen and you can see the views and compostables of new screen B

[skydoves]

Hey, thanks for reporting the issue. Which way do you use for navigating screens?

[AlaaEddinAlbarghoth]

Thanks, similar to this https://www.youtube.com/watch?v=gNzPGI9goU0&ab_channel=Stevdza-San

[AlaaEddinAlbarghoth]

Hello @skydoves, Do you have updates on this issue?

[skydoves]

@AlaaEddinAlbarghoth Sorry for the late response. Could you give key1 on your Cloudy composable like the example below?

Cloudy(
  radius = 15,
  key1 = (an object that indicates navigation screen, which must differ depending on your screen)
) {
  ...
}

[carlospinia]

Same issue here. I have been trying things out. Seeing your comment above, I tried adding a state change via a delay and it works, but during the delay you still see the previous screen in the Cloudy container.

val coroutineScope = rememberCoroutineScope()
var state by remember { mutableStateOf(0) }
LaunchedEffect(key1 = Unit) {
        coroutineScope.launch {
                delay(200)
                state = 1
        }
}
Cloudy(radius = 25, key1 = state) {
   ...
}

[nubpro]

@skydoves Is there a simple and elegant way to go about this?

[marcopla99]

It's quite tricky to fix this issue from Cloudy because the blur is applied to a Bitmap generated from the View with a PixelCopy request on the Window. When navigating, the old screen is still visible for a few milliseconds due to the navigation animation. PixelCopy will start generating the Bitmap as soon as the navigation starts, causing the old blurred View to be shown.

One workaround to this is disabling navigation animations from your NavHost or your screen composables (only from version 2.7.0 of androidx.navigation:navigation-compose):
NavHost( navController = navController, startDestination = "home", enterTransition = { EnterTransition.None }, exitTransition = { ExitTransition.None } ) { /* ... */ }