React Native Geolocation Module

android_app_build.gradle

compile(project(':react-native-geolocation-service')){
    exclude group: 'com.google.android.gms' // this is important
}

compile ("com.google.android.gms:play-services-base:11.0.0") {
    force = true;
}
compile ("com.google.android.gms:play-services-location:11.0.0") {
    force = true;
}
compile ("com.google.android.gms:play-services-maps:11.0.0") {
    force = true;
}
compile ("com.google.android.gms:play-services-gcm:11.0.0") {
    force = true;
}

react-native-geolocation-module.js

// Packages: "react-native-geolocation-service": "^1.0.3",
// Config.log is a shortcut to console.log

import Geolocation from 'react-native-geolocation-service'
import { PermissionsAndroid, Platform } from 'react-native'
import Config from '../Config/Config'

const GRANTED_PERMISSION_VALUE = 'granted'

export const getLocation = async () => {
  return new Promise((res, rej) => {
    requestLocationPermission().then((granted) => {
      if (granted !== getPermissionDroid()) {
        return res({
          lat: 0,
          long: 0
        })
      }

      return Geolocation.getCurrentPosition(
        (position) => {
          Config.log('GEOLOCATION', position)

          res({
            lat: position.coords.latitude,
            long: position.coords.longitude
          })
        },
        (error) => {
          Config.log('GEOLOCATION - Error:', error)

          rej(error)
        },
        {
          enableHighAccuracy: true,
          timeout: 20000,
          maximumAge: 10 // ms
        }
      )
    })
  })
}

const requestLocationPermission = () => {
  if (Platform.OS === 'ios') {
    return Promise.resolve(GRANTED_PERMISSION_VALUE)
  }

  const permission = PermissionsAndroid.PERMISSIONS.ACCESS_FINE_LOCATION

  return PermissionsAndroid.check(permission).then((isAlreadyGranted) => {
    Config.log('isAlreadyGranted', isAlreadyGranted)

    return PermissionsAndroid.request(
      permission,
      {
        'title': 'Sua localização é necessária para o PlaceCar',
        'message': 'PlaceCar precisa do acesso a sua localização para mostrar os postos mais próximos'
      }
    )
  })
}

const getPermissionDroid = () => {
  if (Platform.OS === 'ios') {
    Config.log('PERMISSION/IOS detected. No check needed, returning default value')
    return GRANTED_PERMISSION_VALUE
  }

  Config.log('PermissionsAndroid.RESULTS.GRANTED', PermissionsAndroid.RESULTS.GRANTED)

  return PermissionsAndroid.RESULTS.GRANTED
}