To generate the XML file used for the splashscreen in my cordova-android 11.0.0 application, I created a sample Android app in Android Studio and, following these instructions for adding an icon to the sample app, I specified the Foreground Layer to be an SVG file of my desired splashscreen icon. I specified the background layer to be white.
Then I copied the newly generated file MyApplication/app/src/main/res/drawable/ic_launcher_foreground.xml
into my Cordova app and renamed it resources/android/splash/splashscreen.xml.
Lastly, I updated my Cordova app’s config.xml file like so:
<platform name="android">
<preference name="AndroidWindowSplashScreenAnimatedIcon" value="resources/android/splash/splashscreen.xml" />
<preference name="AndroidWindowSplashScreenBackground" value="#FFFFFF" />
</platform>
It is probably worth noting that my icon is not animated in any way.