How to access Provided (Provider.of()) value inside showModalBottomSheet?

Question

I have a FloatingActionButton inside a widget tree which has a BlocProvider from flutter_bloc. Something like this:

BlocProvider(
  builder: (co         


        

Answer 1

InheritedWidgets, and therefore Providers, are scoped to the widget tree. They cannot be accessed outside of that tree.

The thing is, using showDialog and similar functions, the dialog is located in a different widget tree – which may not have access to the desired provider.

It is therefore necessary to add the desired providers in that new widget tree:

void myShowDialog() {
  final myModel = Provider.of(context, listen: false);
  showDialog(
    context: context,
    builder: (_) {
      return Provider.value(value: myModel, child: SomeDialog());
    },
  );
}