YUNOVA · Android Development · Module 5: Your first useful app

Toasts, dialogs and snackbars

Notes for offline study · 3 November 2026

Toasts, dialogs and snackbars

Key points

  • A Toast shows a short message that disappears on its own and takes no action.
  • A Snackbar appears at the bottom and can carry one action, such as Undo.
  • A dialog interrupts the user and asks for a decision before they continue.