how to use initstate with provider in flutter code example

Example 1: initstate flutter

@override
  void initState() {
    super.initState();
///whatever you want to run on page build
  }

Example 2: flutter call provider in initstate

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

    WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
      auth = Provider.of<Auth>(context, listen: false);
    });
}