Unable to make full screen splash in .NET MAUI

Hello,

I've tried different base sizes, but not working. Target android version up-to 13

On Android 12, it's not possible to make image to full screen in splash screen. It is only possible to customize it: icon, window background, exit animation. Please see this google document: Splash screen

However, here is workaround to make the splash screen to transparent, then you can create a splashScreen with Contentpage， add images in the contentpage.

Step 1. Create styles.xml at Platforms/Android/Resources/values folder, and add the following code to customize style. And make sure the build action of styles.xml is AndroidResource.

<?xml version="1.0" encoding="utf-8" ?>
<resources>
<style name="MyTheme.Splash" parent ="MainTheme">
<item name="android:windowIsTranslucent">true</item>			      
<item name="windowNoTitle">true</item>
<item name="windowActionBar">false</item>
<item name="android:windowSplashScreenAnimatedIcon">@android:color/transparent</item>
<item name="android:windowSplashScreenAnimationDuration">0</item>
</style>
</resources>

Step2. Open your MainActivity.cs, change the theme to Theme = "@style/MyTheme.Splash".

[Activity(Theme = "@style/MyTheme.Splash", ...)]
public class MainActivity : MauiAppCompatActivity
{
}

Step3, please create a Contentpage called SplashScreen add your image to it. And open the Mainpage after several seconds by Task.Delay() and Application.Current.MainPage = new MainPage (); like following code.

protected override async void OnAppearing()
{
    base.OnAppearing();
 
   await Task.Delay(1000).ContinueWith(t => {
       MainThread.InvokeOnMainThreadAsync(() => {
           Application.Current.MainPage = new MainPage ();
       });
    }); 
}

Step4 open the App.xaml.cs, change the MainPage to the SplashScreen.

public partial class App : Application
  {
      public App()
      {
          InitializeComponent();
 
          MainPage = new SplashScreen();
      }
  }

Best Regards,

Leon Lu

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