Learning Large-Screen Support from the Ground Up — Development Insights from a “Large screen differentiated”-Certified App —

Large screens, does your app support them? Because Android 16 ignores fixed screen-orientation and aspect-ratio settings, virtually every app now needs to support large screens. The arrival of new form-factors with far bigger display areas—such as Android XR devices—makes large-screen readiness even more critical. Our U-NEXT app became the first Japanese VOD app to be certified by Google as “Large screen differentiated,” the highest of the three levels in Google’s Large screen app quality scale. Drawing on the knowledge gained from achieving that certification, this session explains—step by step—how to evolve an existing app into one that fully supports large screens, from fundamentals to advanced techniques. The content will benefit intermediate and advanced developers looking to upgrade existing apps, as well as beginners who are just starting Android development. Key topics covered in the session: - Specification changes to screen-orientation and aspect-ratio settings in Android 16 - Overview of Google’s Large screen app quality and its relationship to the Android XR app quality guidelines - Designing and implementing with configuration changes in mind - Strategies for large-screen support in View-based apps - Flexible large-screen support with Jetpack Compose - Going beyond to earn “Large screen differentiated” certification (Translated by the DroidKaigi Committee)

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  tomoya0x00 Android Engineer