I highly doubt Flutter can run on Android 2.x. Natively you can use a different theme depending on which Android version the app is running on. The 2.x one on

I highly doubt Flutter can run on Android 2.x. Natively you can use a different theme depending on which Android version the app is running on. The 2.x one on 2.x, Holo on 4.x, and Material on 5 and newer.