react-native-google-location

Location acquisition through Google Play Services.

Installation

If you have not done - Install Google Play APK

Check here

Install the npm package

npm i --save react-native-google-location

Then you must install the native dependencies. You can use rnpm to add native dependencies automatically (you still have to add permissions to your Manifest file, see "Add Permissions and used Google API to your Project"):

rnpm link

or do it manually as described below:

Manual Installation: Add it to your android project

• In android/settings.gradle

...
include ':react-native-google-location', ':app'
project(':react-native-google-location').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-google-location/android/app')

• In android/app/build.gradle

...
dependencies {
    ...
    compile project(':react-native-google-location')
}

• register module (in MainActivity.java)

Newer versions of React Native

...
import com.timhagn.rngloc.RNGLocation;  // <--- import
...
public class MainActivity extends ReactActivity {
 ....
 @Override
 protected List<ReactPackage> getPackages() {
   return Arrays.<ReactPackage>asList(
     new MainReactPackage(),
     new RNGLocation() // <---- and This!
   );
 }
}

Older versions of React Native

import com.timhagn.rngloc.RNGLocation;  // <--- 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 RNGLocation()) // <-- Register package here
      .setUseDeveloperSupport(BuildConfig.DEBUG)
      .setInitialLifecycleState(LifecycleState.RESUMED)
      .build();

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

    setContentView(mReactRootView);
  }

  ......

}

Add Permissions and used Google API to your Project

Add this to your AndroidManifest file;

// file: android/app/src/main/AndroidManifest.xml
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

Make sure this goes at the bottom of the <application> tag.

	<uses-library android:name="com.google.android.maps" />
	<meta-data
        android:name="com.google.android.gms.version"
        android:value="@integer/google_play_services_version" />

Example

'use strict';

var React = require('react-native');

// Import react-native-google-location
import RNGLocation from 'react-native-google-location';

var {
  Component,
  AppRegistry,
  // DeviceEventEmitter for registering of the Callback-Listener
  DeviceEventEmitter,
  StyleSheet,
  Text,
  View,
} = React;

export default class RNGLocationExample extends Component {
  constructor(props) {
    super(props);
    // Create and Reset initial State Longitude (lng) and Latitude (lat)
    this.state = {
      lng: 0.0, 
      lat: 0.0,
    };

    if (!this.evEmitter) {
      // Register Listener Callback - has to be removed later
      this.evEmitter = DeviceEventEmitter.addListener('updateLocation', this.onLocationChange.bind(this));
      // Initialize RNGLocation
      RNGLocation.getLocation();
    }
  }

  onLocationChange (e: Event) {
    this.setState({
      lng: e.Longitude, 
      lat: e.Latitude 
    });
  }

  componentWillUnmount() {
    // Stop listening for Events
    this.evEmitter.remove();
  }

  render() {
    return (
      <View style={styles.container}>
        <Text style={styles.location}>
          Lng: {this.state.lng} Lat: {this.state.lat}
        </Text>
      </View>
    );
  }
}

var styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: '#F5FCFF',
  },
  location: {
    textAlign: 'center',
    color: '#333333',
    marginBottom: 5,
  }
});

AppRegistry.registerComponent('RNGLocationExample', () => RNGLocationExample);