gradle - Android Studio Error:resource style/Base.V26.Theme.AppCompat (aka de.webducer.androidbuch.zeiterfassung:style/Base.V26.Theme.AppCompat) not found - Stack Overflow
Different Ways to Change or Add Themes to Android Studio - GeeksforGeeks
Android Studio Themes - how to change theme in android studio 2020 - YouTube
Styles and themes | Android Developers
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Different Ways to Change or Add Themes to Android Studio - GeeksforGeeks
Material Theme - Xamarin | Microsoft Learn
Why am I getting theme error in android studio? (Android forum at Coderanch)