Icon background color in Android 12 Splash Screen does not work

In my Android project I use Splash Screen API to add splash screen to my app. My theme that I apply to application in Manifest looks like this:

<style name="Launcher" parent="Theme.SplashScreen">
    <item name="windowSplashScreenBackground">@color/background</item>
    <item name="windowSplashScreenAnimatedIcon">@drawable/ic_launcher_foreground</item>
    <item name="windowSplashScreenIconBackgroundColor">@color/orange</item>
    <item name="postSplashScreenTheme">@style/AppTheme</item>
</style>

@color/orange in windowSplashScreenIconBackgroundColor should add circle shaped backround around icon. However, background is not added, there is just an icon and a background.

I add corresponding theme to my app as following:

<application
    android:name=".App"
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name_label"
    android:theme="@style/Launcher">

I tried to change splash screen windowSplashScreenBackground to orange and it worked, so the problem is not that my theme is ignore somehow.

If you want to override windowSplashScreenIconBackgroundColor, you have to extend Theme.SplashScreen.IconBackground theme, not the Theme.SplashScreen. Something like this:

<style name="Launcher" parent="Theme.SplashScreen.IconBackground">
    <item name="windowSplashScreenBackground">@color/background</item>
    <item name="windowSplashScreenAnimatedIcon">@drawable/ic_launcher_foreground</item>
    <item name="windowSplashScreenIconBackgroundColor">@color/orange</item>
    <item name="postSplashScreenTheme">@style/AppTheme</item>
</style>

As shown on the Splash Screen Api, Make sure you prepend the item name with android:

For example, replace:

<item name="windowSplashScreenBackground">@color/background</item>

with:

<item name="android:windowSplashScreenBackground">@color/background</item>

This is what I have:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <!--Splash Screen api: https://developer.android.com/develop/ui/views/launch/splash-screen#set-theme-->
    <style name="Theme.MyApp" parent="@android:style/Theme.Material.NoActionBar">
        <!--fill the background with a specific single color-->
        <item name="android:windowSplashScreenBackground">@color/dark</item>
        <!--background behind the splash screen icon  TODO this is not working -->
        <item name="android:windowSplashScreenIconBackgroundColor">@color/dark</item>
    </style>
</resources>