Software to listen to mp3 on the location basis

так, добавив його там, де сказав чат GPT, але далі маю помилку

Доброго вечора, дякую за підказку! Якщо мені не вдасться чи я можу Вас допомогти мені (за грогі)? Бо я тільки почав працювати з Android Studio і не знаю чи я на вірному шляху.

Привіт

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

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;
  Position? _currentPosition;  // Declare a Position variable to store the location

  void _incrementCounter() {
    setState(() {
      _counter++;
    });
  }

  // Asynchronous method to get the current location
  _getCurrentLocation() async {
    Position position = await Geolocator.getCurrentPosition(
        desiredAccuracy: LocationAccuracy.high);
    setState(() {
      _currentPosition = position;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            const Text('You have pushed the button this many times:'),
            Text(
              '$_counter',
              style: Theme.of(context).textTheme.headlineMedium,
            ),
            // Display the current location if available
            if (_currentPosition != null)
              Text(
                  "LAT: ${_currentPosition!.latitude}, LNG: ${_currentPosition!.longitude}"),
            ElevatedButton(
              onPressed: () {
                _getCurrentLocation();  // Call this method when the button is pressed
              },
              child: const Text("Get location"),
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: const Icon(Icons.add),
      ),
    );
  }
}