Android 12: splash screen is no longer displayed while the app loads

[mfeingol]

Steps to Reproduce

1. Run the official SplashScreen sample
2. Remove the artificial delay added by the sample before running the main activity
3. Observe that on Android 11 the splash screen is display from the moment the app runs, whereas on Android 12 it is only displayed for a split second just before the main page is rendered.

This may be an OS change and not a Xamarin problem, but it still struck me as a rather odd user experience and I wanted to make sure it wasn't something in Xamarin itself (e.g. maybe Xamarin needs to change to use the new SplashScreen APIs?)

SplashScreen.zip

Expected Behavior

Splash screen displayed during app boot-up, as on Android 11 and lower.

Actual Behavior

On Android 12 the splash screen is only displayed for a brief time, if at all.

Version Information

VS 2022

[jpobst]

It seems Google has changed the way splashscreens work in Android 12. You will likely need to follow their guidance to update your app to their latest system:

https://developer.android.com/guide/topics/ui/splash-screen/migrate

[mfeingol]

@jpobst that looks right. I'll take a look at that when I get a chance.

That said, an update to the official sample wouldn't go amiss. Would likely save time for many of us.

[jmbowman1107]

I have looked into this myself, and it seems we need to include the androidx.core:core-splashscreen:1.0.0-alpha02 library in order to follow the migration path that is detailed here:

https://developer.android.com/guide/topics/ui/splash-screen/migrate

Are there any plans to create bindings for this library soon?

[jpobst]

In general we do not bind non-stable packages.

Here's some instructions that were posted in another forum:

On the plus side, if you:

• Download https://dl.google.com/android/maven2/androidx/core/core-splashscreen/1.0.0-alpha02/core-splashscreen-1.0.0-alpha02.aar
• Create a new Android Bindings Project
• Add core-splashscreen-1.0.0-alpha02.aar to the Bindings Project
• (Optional?) set the $(TargetFrameworkVersion) of the Binding Project to v12.0

it builds for me with only 15 warnings, and the static method SplashScreen.InstallSplashScreen(Activity) is bound.

[jmbowman1107]

Thanks! I will do this in the meantime until it is stable:). I was actually thinking of doing the binding myself, but couldn't find the .aar file for the life of me.. This is super helpful :).

[ivandamyanov]

I had to install "Xamarin.Kotlin.StdLib" in the Bindings project as well as my main app's Android project to be able to call the InstallSplashScreen method. Pity that the issue with the missing icon on the splash screen is still there (when the app is started from VS or if a deep link opens the app)

[abdul-wasey]

SplashScreen.InstallSplashScreen(Activity)

I have followed your steps,
but getting an error here,

SplashScreen.InstallSplashScreen(this);
InstallSplashScreen method is not found.

[abdul-wasey]

You should put the namespace before the method to use.. Like. Example.one.InstallSplashScreen()

…

On Sat, 12 Feb 2022, 1:19 am Adriano de Oliveira Cipriano, < ***@***.***> wrote: I had to install "Xamarin.Kotlin.StdLib" in the Bindings project as well as my main app's Android project to be able to call the InstallSplashScreen method. Pity that the issue with the missing icon on the splash screen is still there (when the app is started from VS or if a deep link opens the app) @ibobb <https://github.com/iBobb> I also installed "Xamarin.Kotlin.StdLib" but the InstallSplashScreen method is not recognized yet. Do you have an example ? — Reply to this email directly, view it on GitHub <#6517 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AJWUDXQBK6DF6BF3OYOYMA3U2VVMZANCNFSM5ISAR7VQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>. You are receiving this because you commented.Message ID: ***@***.***>

[MicahArmantrout]

I am not sure this issue should be closed at the very least maybe I am doing something wrong

I am having the same issues I have tried to bind to that aar to see if that will help but I get these errors

stackoverflow question
https://stackoverflow.com/questions/71135199/xamarin-splash-screen-android-11-vs-android-12

Repro to reproduce my issue (one folder shows that actual issue, one folder attempts the android Binding)
https://github.com/MicahArmantrout/SplashScreen