Hint 3: How to force the application to stick to Portrait mode
How to force the Flutter application to remain in Portrait (vertical) mode even if the user is rotating the SmartPhone?
To force the layout to “Portrait” mode, at application startup, set the SystemChrome.setPreferredOrientations([…]) as shown in lines #5-8.
If you want to force to “Landscape” (horizontal) mode, change lines #5-8 to:
await SystemChrome.setPreferredOrientations([ DeviceOrientation.landscapeLeft, DeviceOrientation.landscapeRight ]);