Worked on the libsdl-org/SDL repository to update the Android immersive fullscreen experience, delivering an API-30+-based implementation using WindowInsetsController. This approach ensured proper hide and show behavior for system bars on Android 15 and newer, addressing changes where legacy UI flags are ignored. To maintain compatibility, the update preserved the legacy setSystemUiVisibility path for devices running older Android versions. The work involved Java and Android mobile development, with careful segregation of API-specific logic and thorough documentation of the rationale behind each change. This enhanced both user experience and maintainability for immersive mode across a wide range of Android devices.