onDismissPrevented property

OnDismissPreventedCallback? onDismissPrevented
final

A callback that gets invoked when a user tried to dismiss the dialog while isDimissable is set to true.

The backButton flag indicates whether the user tried to dismiss the sheet using the backButton, while the backDrop flag indicates whether the user tried to dismiss the sheet by tapping the backdrop.

Implementation

final OnDismissPreventedCallback? onDismissPrevented;