PhysiGo/app/lib/mainPage.dart

import 'package:flutter/material.dart';
import 'package:physigo/walking/walking_permission.dart';

class MainPage extends StatefulWidget {
  const MainPage({Key? key}) : super(key: key);
  @override
  State<MainPage> createState() => _MainPage();
}
class _MainPage extends State<MainPage> {


  @override
  Widget build(BuildContext context) {
    final arguments = (ModalRoute.of(context)?.settings.arguments ?? <String, dynamic>{}) as Map;
    final String id = arguments['uid'];
    print(id);

    return Scaffold(
      appBar: AppBar(

        title: const Text('Welcome Back!'),
        leading: GestureDetector(
          onTap: () {
            print('going to profile page');
            Navigator.pushNamed(context, '/profilePage',
              arguments: {'id': id},
            );
            },
          child: Icon(
            Icons.account_circle_rounded,  // add custom icons also
          ),
        ),
      ),
      body: WalkingPermission()
    );
  }
}