I'm really new in flutter and also in Android dev, but is it possible to hide the bottom navigation bar (see which item do i mean below) programmatically?
Try this:
SystemChrome.setEnabledSystemUIOverlays([SystemUiOverlay.top]);
Update 2024
SystemChrome.setEnabledSystemUIMode(SystemUiMode.manual, overlays: [
SystemUiOverlay.top,
SystemUiOverlay.bottom,
]);