showModalBottomSheet<T> function

Future<T> showModalBottomSheet <T>({@required BuildContext context, @required WidgetBuilder builder })

Shows a modal material design bottom sheet.

A modal bottom sheet is an alternative to a menu or a dialog and prevents the user from interacting with the rest of the app.

A closely related widget is a persistent bottom sheet, which shows information that supplements the primary content of the app without preventing the use from interacting with the app. Persistent bottom sheets can be created and displayed with the showBottomSheet function or the ScaffoldState.showBottomSheet method.

The context argument is used to look up the Navigator and Theme for the bottom sheet. It is only used when the method is called. Its corresponding widget can be safely removed from the tree before the bottom sheet is closed.

Returns a Future that resolves to the value (if any) that was passed to Navigator.pop when the modal bottom sheet was closed.

See also:

Implementation 

Future<T> showModalBottomSheet<T>({
  @required BuildContext context,
  @required WidgetBuilder builder,
}) {
  assert(context != null);
  assert(builder != null);
  assert(debugCheckHasMaterialLocalizations(context));
  return Navigator.push(context, _ModalBottomSheetRoute<T>(
    builder: builder,
    theme: Theme.of(context, shadowThemeOnly: true),
    barrierLabel: MaterialLocalizations.of(context).modalBarrierDismissLabel,
  ));
}