How can I provide a bloc for only two pages of application?

Question

in my application there are a couple of pages. two pages need to use one bloc.
I use namedRoutes for navigating between pages and the BlocProvider is on the top of app widget so it is provided for all pages of application but I only want to provide it for two pages so that when I navigate to one of two pages a new instance of bloc is created and when I leave both pages the bloc is disposed...
what can I do?

Answer 1

A very similar question was asked some time ago in the bloc library GitHub issues.

That's what Felix, bloc's creator wrote:

(...) You have 3 options though:

• wrap your MaterialApp with a BlocProvider for global access
• use named routes and setup the BlocProvider to be scoped for the named route
• pass the bloc via constructor into the new page and then use BlocProvider to make it available in the remaining subtree
• use your another DI library to provide the blocs

Imo it’s not a big deal to pass the bloc via constructor into the new page and then provide it again (...)

• https://github.com/felangel/bloc/issues/74#issuecomment-497308365