ScrollController not attached to any scroll views

Question

I\'m using CustomScrollView, and providing it with a controller. ScrollController works, I even added a listener to it and print out the position of the scroll view.

Answer 1

Delaying it is not the right solution. Better to wait till the tree is done building by using

WidgetsBinding.instance
        .addPostFrameCallback((_){});

sample

WidgetsBinding.instance.addPostFrameCallback((_) {
      if(pageController.hasClients){
              pageController.animateToPage(page index, duration: Duration(milliseconds: 1), curve: Curves.easeInOut);
      }
});