Unsubscribe to state when not active route?

[martinory]

Hi!

I changed the formulation of the problem.

When navigating to a new page, the previous page in the router stack still subscribes to the state which results in unnecessary rebuilds which affect performance.

Is there a way to only subscribe to the state if it is the active one in the router stack?

[abacaj]

@martinory can't you just use a Route Observer to do the unsubscribing?

https://master-api.flutter.dev/flutter/widgets/RouteObserver-class.html