import android.os.Bundle

[mistyn8]

Had to add an import android.os.Bundle into android\app\src\main\kotlin\com\rmzsoft\watermaniac\MainActivity.kt

otherwise android build in visual studio code for pixel 2 emulator failed with

flutter MainActivity.kt: 'onCreate' overrides nothing

[artur-ios-dev]

Thank you! Good catch 👍🏼 Feel free to make a pull request.