gps_coordinates

This Flutter plugin allows you to get the device's current location.

How to use

To use this plugin you don't have to worry about what platform the app is running on, but you do need a little work to get the permissions working in Android and iOS. Follow the following steps for whatever platform you're developing for.

Steps for Android

Android apps need a location permission in their AndroidManifest.xml to be able to use location services. All you need to do is add

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

or

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

to you AndroidManifest.xml depending on how accurate you want the returned location to be.

Steps for iOS

iOS apps need a justification for using certain permissions. Location is one of them, therefore you need to add a reason for needing location access in your app's Info.plist.

To do that, just add the following keys to your Info.plist and a string for your justification:

• NSLocationWhenInUseUsageDescription
• NSLocationAlwaysUsageDescription

Implementation in Flutter

After all that is done, simply add a dependency to you pubspec.yaml for gps_coordinates with the path to the folder where you cloned the project to.

Then import the package in your dart file with

import 'package:gps_coordinates/gps_coordinates.dart';

and call the gpsCoordinates getter function in the GpsCoordinates class. Your implementation may differ, but the basic implementation in the example app is as follows:

_getCoordinates() async {
  Map<String, double> coordinates;
  // Platform messages may fail, so we use a try/catch PlatformException.
  try {
    coordinates = await GpsCoordinates.gpsCoordinates;
  } on PlatformException {
    Map<String, double> placeholdCoordinates = new Map();
    placeholdCoordinates["lat"] = 0.0;
    placeholdCoordinates["long"] = 0.0;
    coordinates = placeholdCoordinates;
  }

  // If the widget was removed from the tree while the asynchronous platform
  // message was in flight, we want to discard the reply rather than calling
  // setState to update our non-existent appearance.
  if (!mounted)
    return;

  setState(() {
    _coordinates = coordinates;
  });
}

That is all you have to do to implement in Flutter.

⚠️ Warning

This plugin was a project I started for a need to get the user's current location once, not for getting updates on location. For that reason, and until I have a reason to implement location listening, the project will serve just that purpose.

Feel free to implement location listening on your own and send a pull request. Just because I'm not going to spend the time to implement that doesn't mean that I wouldn't like this plugin to be more complete.