Issue
Could you explain what does the .obs function do?
RxInt _questionNumber = 1.obs;
Solution
It makes questionNumber an observable variable. Which means that whenever the value of that variable changes, that change will be automatically reflected on all places where it’s being used.
It’s like listening to a stream.
Answered By – S. M. JAHANGIR
Answer Checked By – Willingham (FlutterFixes Volunteer)