bmi_calculator_app/lib/profile.dart

import 'package:flutter/material.dart';
import 'package:shared_preferences/shared_preferences.dart';

class ProfilePage extends StatefulWidget {
  static const routeName = "/profile";

  ProfilePage({Key? key}) : super(key: key);

  @override
  _ProfilePageState createState() => _ProfilePageState();
}

class _ProfilePageState extends State<ProfilePage> {
  List<Map<String, String>> storedMeasurements = [];

  Future<void> _getResults() async {
    SharedPreferences prefs = await SharedPreferences.getInstance();

    var measurements = prefs.getKeys().map((key) {
      List<String>? tmp = prefs.getStringList(key);
      return {"date": key, "bmi": tmp![0], "bfp": tmp[1]};
    }).toList();

    setState(() {
      storedMeasurements = measurements;
    });
  }

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

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("Your profile"),
      ),
      body: ListView.builder(
        padding: const EdgeInsets.all(8),
        itemCount: storedMeasurements.length,
        itemBuilder: (BuildContext context, int index) {
          return InkWell(
            child: ListTile(
              onTap: null,
              leading: CircleAvatar(
                backgroundColor: Colors.lightGreen,
                child: Text("${index + 1}"),
                foregroundColor: Colors.white,
              ),
              title: Row(
                children: <Widget>[
                  Expanded(child: Text(storedMeasurements[index]["date"]!)),
                  Expanded(child: Text(storedMeasurements[index]["bmi"]!)),
                  Expanded(child: Text(storedMeasurements[index]["bfp"]!)),
                ],
              ),
            ),
          );
        },
      ),
    );
  }
}