geocoding services for react native

npm install --save react-native-geocoder 

1. In the XCode's "Project navigator", right click on Libraries folder under your project ➜ Add Files to <...>
2. Go to node_modules ➜ react-native-geocoder and add ios/RNGeocoder.xcodeproj file
3. Add libRNGeocoder.a to "Build Phases" -> "Link Binary With Libraries"

1. In android/setting.gradle

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

3. In android/app/build.gradle

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

4. register module (in MainApplication.java)

import com.devfd.RNGeocoder.RNGeocoderPackage; // <--- import public class MainActivity extends ReactActivity { ...... @Override protected List<ReactPackage> getPackages() { return Arrays.<ReactPackage>asList( new MainReactPackage(), new RNGeocoderPackage()); // <------ add this } ...... }

import Geocoder from 'react-native-geocoder'; // Position Geocoding var NY = { lat: 40.7809261, lng: -73.9637594 }; Geocoder.geocodePosition(NY).then(res => { // res is an Array of geocoding object (see below) }) .catch(err => console.log(err)) // Address Geocoding Geocoder.geocodeAddress('New York').then(res => { // res is an Array of geocoding object (see below) }) .catch(err => console.log(err)) 

Geocoding services might not be included in some Android devices (Kindle, some 4.1 devices, non-google devices). For those special cases the lib can fallback to the online google maps geocoding service

import Geocoder from 'react-native-geocoder'; // simply add your google key Geocoder.fallbackToGoogle(MY_KEY); // use the lib as usual let ret = await Geocoder.geocodePosition({lat, lng}) // you get the same results

try { const res = await Geocoder.geocodePosition(NY); ... const res = await Geocoder.geocodeAddress('London'); ... } catch(err) { console.log(err); } 

both iOS and Android will return the following object:

{ position: {lat, lng}, formattedAddress: String, // the full address feature: String | null, // ex Yosemite Park, Eiffel Tower streetNumber: String | null, streetName: String | null, postalCode: String | null, locality: String | null, // city name country: String, countryCode: String adminArea: String | null subAdminArea: String | null, subLocality: String | null }

iOS does not allow sending multiple geocoding requests simultaneously, hence if you send a second call, the first one will be cancelled.

geocoding may not work on older android devices (4.1) and will not work if Google play services are not available.