Native GPS location support for React Native for Android and IOS. This module was inspired in project of timfpark and syarul. For the moment is not compatible for a PR back to one of that repositories because some methods are not implemented yet and some structure changed. Only a few methods are implemented so if you want to contribute, any contribution of new missing methods will be appreciated.

npm i --save https://github.com/agrass/react-native-gps

You then need to add the Objective C part to your XCode project. Drag RNLocation.xcodeproj from the node_modules/react-native-location folder into your XCode project. Click on the your project in XCode, goto Build Phases then Link Binary With Libraries and add libRNLocation.a and CoreLocation.framework.

NOTE: Make sure you don't have the RNLocation project open separately in XCode otherwise it won't work.

• In android/settings.gradle

...
include ':RNLocation'
project(':RNLocation').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-gps')

• In android/app/build.gradle

...
dependencies {
    ...
    compile project(':RNLocation')
}

• register module (in MainActivity.java)

import com.syarul.rnlocation.RNLocation;  // <--- import

public class MainActivity extends Activity implements DefaultHardwareBackBtnHandler {
  ......

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    mReactRootView = new ReactRootView(this);

    mReactInstanceManager = ReactInstanceManager.builder()
      .setApplication(getApplication())
      .setBundleAssetName("index.android.bundle")
      .setJSMainModuleName("index.android")
      .addPackage(new MainReactPackage())
      .addPackage(new RNLocation()) // <-- Register package here
      .setUseDeveloperSupport(BuildConfig.DEBUG)
      .setInitialLifecycleState(LifecycleState.RESUMED)
      .build();

    mReactRootView.startReactApplication(mReactInstanceManager, "example", null);

    setContentView(mReactRootView);
  }

  ......

}

Add this to your AndroidManifest file;

// file: android/app/src/main/AndroidManifest.xml

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

var React = require('react-native');
var { DeviceEventEmitter } = React;

var { RNLocation: Location } = require('NativeModules');

Location.startUpdatingLocation();

var subscription = DeviceEventEmitter.addListener(
    'locationUpdated',
    (location) => {
        /* Example location returned
        {
          speed: -1,
          longitude: -0.1337,
          latitude: 51.50998,
          accuracy: 5,
          heading: -1,
          altitude: 0,
          altitudeAccuracy: -1
        }
        */
    }
);

To access the methods, you need import the react-native-location module.

Location.requestWhenInUseAuthorization();

This method should be called before anything else. It requests location updates while the application is open. If the application is in the background, you will not get location updates (for the moment, background work not implemented yet).

Location.startUpdatingLocation();
var subscription = DeviceEventEmitter.addListener(
    'locationUpdated',
    (location) => {
        // do something with the location
    }
);

Location.stopUpdatingLocation();

MIT, for more information see LICENSE