Description

Splash screens on Android do not respect aspect ratio.

• Android 21: there is just a total fill of the screen because the width/height concepts are only supported in Android 23+.
• Android 33: (at least) the new splash system is designed for square images and as a result just does a fill. I did make the size shrink in Correctly size the Android 12 splash screen #9797, however, all the logic was just made to fix the way android just clips things.
• Should we make sure the generated image is not huge

Workarounds

To fix Android 21, add a custom maui_splash_image.xml to drawable:

Platforms\Android\Resources\drawable\maui_splash.xml:

<?xml version="1.0" encoding="utf-8"?>
<!--This file was auto-generated by .NET MAUI.-->
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <bitmap android:gravity="center" android:src="@drawable/name_of_your_splash_image" android:mipMap="true" />
</layer-list>

To fix Android 23+, add a custom maui_splash_image.xml to drawable-v23:

Platforms\Android\Resources\drawable-v23\maui_splash.xml:

<?xml version="1.0" encoding="utf-8"?>
<!--This file was auto-generated by .NET MAUI.-->
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:width="108dp" android:height="108dp" android:gravity="center">
    <bitmap android:gravity="fill" android:src="@drawable/name_of_your_splash_image" android:mipMap="true" />
  </item>
</layer-list>

Make sure to use the name of your splash screen image in the place of name_of_your_splash_image.
Replace the width/height values if your image is not square.

Android 21	Android 33