pubspec file, and accessed using

Adding assets and images.

Tip:
  The Pavlova example runs best horizontally on a wide device,
  such as a tablet.  If you are running this example in the iOS simulator,
  you can select a different device using the Hardware > Device menu.
  For this example, we recommend the iPad Pro.
  You can change its orientation to landscape mode using
  Hardware > Rotate. You can also change the size of the
  simulator window (without changing the number of logical pixels)
  using Window > Scale.

App source: pavlova

Common layout widgets