Flutter run once method with context available?

Question

Is there any strategy for having you code run only once(like initState()) and have the context also available (to use .of(context)). For example I am getting Bloc.of(context) and I want to subscribe to it (do some stuff like showing an alert dialog, etc). Subscribing in build(), means subscribing multiple times

I can use didChangeDependencies() and set the subscription ??= bloc.listen, but I was wondering if there is another good strategy.

Answer 1

there is another way to do that , by add a "bool" variable and set it as "false" in the "initState" , and lets named (isExec)

2 - in the build method check if "isExec" == false , then run your code that you want to excute it once (alert , subscribe .. etc)

3 - change "isExec" to true (isExec = true);

now if your app state change the build method well avoid that code in the if statment