There are several examples listed in this directory: You can run the following commands in the example directory to see the appropriate demos:
flutter run to see a more fully fledged functional usage of the AdaptiveLayout suite and some AdaptiveScaffold static methods.
flutter run lib/adaptive_layout_demo.dart to see a simple usage of AdaptiveLayout.
flutter run lib/adaptive_scaffold_demo.dart to see a simple usage of AdaptiveScaffold.