CODEWITHSUNDEEP
flutter
griffins
griffins

Reputation: 8256

difference between running a method before super.initState() and after super.initState()

what is the difference between running a method before super.initState() and after super.initState()

     @override
  void initState() {
    super.initState();  
    getCurrentUser();   
  }



 @override
  void initState() {
 getCurrentUser(); 
    super.initState();  

  }

Upvotes: 0

Views: 444

Answers (2)

Tizianoreica
Tizianoreica

Reputation: 2236

Suggestion Dart/Flutter documentation "suggests" to call super.initState() as first method before your body implementation.

But if we look at how it is implemented Documentation

@protected
@mustCallSuper
void initState() {
  assert(_debugLifecycleState == _StateLifecycle.created);
}

it's possible to see that it contains only an assert(). the assert built-in function it's called only in DEBUG mode, not in production mode. So, at the end of the day, it really doesn't matter, because the super.initState() would practically do nothing.

Upvotes: 1

Ratnadeep Bhattacharyya
Ratnadeep Bhattacharyya

Reputation: 846

Explanation for framework: Dart is class based object oriented programming language, so when you build a widget you extend it from a base class StatelessWidget or StatefulWidget. initState is lifecycle method in flutter widget (as you might know) which is only available to override in StatefulWidgets and it called only once. So, it call initState of base class which is StatefulWidget thats why you call super.initState()which in turn creates BuildContext and attached State.

Now your question: I didn't find anything different in calling a method before or after super.initState(). Event I tried adding addPostFrameCallback before super.initState() and it worked fine. Even super.mounted is also true in both cases.

Upvotes: 2

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