Getting Address from Any Location using Geolocator in Flutter

Geolocation is an essential feature in many mobile applications, allowing developers to access a device's location and retrieve information about it, such as latitude, longitude, and address. In Flutter, the geolocator package provides a straightforward way to integrate geolocation functionality into your app. In this blog post, we'll explore how to use the geolocator package to get the address from any location in a Flutter app.



Setting up Geolocator Package


dependencies:
  geolocator: ^11.0.0

After adding the dependency, run flutter pub get in your terminal to install the package.

Using Geolocator to Get Address

Now that you have the geolocator package added to your project, you can start using it to fetch the address from a location. Here's a step-by-step guide:

1. Import Geolocator Package


import 'package:geolocator/geolocator.dart';

2. Create Geolocator Instance


Geolocator geolocator = Geolocator();

3. Get Current Position


Position currentPosition = await geolocator.getCurrentPosition(
  desiredAccuracy: LocationAccuracy.best,
);

4. Get Address from Coordinates


List placemarks = await geolocator.placemarkFromCoordinates(
  currentPosition.latitude,
  currentPosition.longitude,
);

Placemark placemark = placemarks.first;
String address =
    '${placemark.street}, ${placemark.subLocality}, ${placemark.locality}, ${placemark.country}';

5. Display Address

You can now use the retrieved address in your app as needed, such as displaying it on a UI widget or storing it for future use.

Example Implementation

Here's an example implementation of how you can use the geolocator package to get the address from the device's current location and display it in a Flutter app:


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

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Geolocator Example',
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State {
  Geolocator geolocator = Geolocator();
  Position currentPosition;
  String address = '';

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

  Future _getCurrentLocation() async {
    try {
      Position position = await geolocator.getCurrentPosition(
        desiredAccuracy: LocationAccuracy.best,
      );
      setState(() {
        currentPosition = position;
      });

      List placemarks = await geolocator.placemarkFromCoordinates(
        currentPosition.latitude,
        currentPosition.longitude,
      );
      Placemark placemark = placemarks.first;
      setState(() {
        address =
            '${placemark.street}, ${placemark.subLocality}, ${placemark.locality}, ${placemark.country}';
      });
    } catch (e) {
      print('Error: $e');
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Geolocator Example'),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          crossAxisAlignment: CrossAxisAlignment.center,
          children: [
            if (currentPosition != null)
              Text(
                'Latitude: ${currentPosition.latitude}\n'
                'Longitude: ${currentPosition.longitude}',
                textAlign: TextAlign.center,
              ),
            SizedBox(height: 20),
            if (address.isNotEmpty)
              Text(
                'Address: $address',
                textAlign: TextAlign.center,
              ),
          ],
        ),
      ),
    );
  }
}


Conclusion

Integrating geolocation features into your Flutter app using the geolocator package is straightforward and enables you to access essential information about the device's location. Whether you're building location-based services, mapping applications, or simply need to fetch address details, the geolocator package provides the necessary tools to accomplish these tasks efficiently. Experiment with the provided code and explore the possibilities of incorporating geolocation functionalities into your Flutter projects!

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