on change function is being called on load

[MasterNeuromancer]

when the widget loads, the state is false, and therefore unintended calls are being made on the app. Is there a way to isolate the on tap function only. I only want the calls to be made when a user taps the widget, not on load. Thank you.

[Bader-Al]

I had the same issue and found two solutions.. however, the second one destroyed the drag of a DraggableBottomSheet I have in my app.. So i stuck to the first one

1 - just wrap the onChanged function with WidgetsBinding as such :

WidgetsBinding.instance.addPostFrameCallback((_){

  // Add Your Code here.

});

2- the other method is to use SchedulerBinding :

SchedulerBinding.instance.addPostFrameCallback((_) {

  // add your code here.
});

[Bader-Al]

Incase you'd like to see where i found those solutions :
https://stackoverflow.com/questions/47592301/setstate-or-markneedsbuild-called-during-build

[MasterNeuromancer]

Thanks @Bader-Al , I will look into that!

[rodrigobastosv]

I just made a PR to solve this issue.

#6

[Huzaifa2019]

Thank you so much

[0ne0rZer0]

I was having the same problem what i did was add an if condition inside the _determine() function (as it is called during initState)
if (changeState) widget.onChanged(turnState);