Block navigation when a form has unsaved changes
Implement WillLeaveObserver to prompt the user with a confirm dialog before discarding edits.
4 Dokumente getagt mit "forms"
Disable a Button while a save operation runs
Prevent double-submit by disabling the button and updating its label for the duration of the operation, then restoring it when done.
Show a multi-field form in a Dialog and save it with BindingContext
Open a Dialog pre-populated with a domain object, bind fields with BindingContext, and persist changes on save.
Validate an email field as the user types, debounced
Combine the Debouncer with a text field's modify event so validation runs once typing pauses, not on every keystroke.