Flutter setState() or markNeedsBuild() called when widget tree was locked

Question

I am having trouble finding the source to this exception, and the app is quite complex so it is hard to show any relevant part of the code. This is my repository at the poin

Answer 1

As a workaround wrap your code that calling setState into WidgetsBinding.addPostFrameCallback:

WidgetsBinding.instance
        .addPostFrameCallback((_) => setState(() {}));

That way you can be sure it gets executed after the current widget is built.