expo: Location services in Android not working

This issue is with android when location service is disabled and permission is granted… So to solve this … first use Expo.Location.getProviderStatusAsync()… it return an object… inside the object there are 4 fields… for this task we need only two: locationServicesEnabled (boolean), gpsAvailable (boolean) …check their boolean value… if any of them is false…Expo.LocationgetCurrentPositionAsync({}) … will give promise rejection error… so to not to get this error… we have to enable ’ locationServicesEnabled (boolean), gpsAvailable (boolean) ’ …To enable these… we have to use Expo.IntentLauncherAndroid. to open the location setting and enable it… to Open location setting… required code is:

import { IntentLauncherAndroid } from ‘expo’; // Open location settings IntentLauncherAndroid.startActivityAsync( IntentLauncherAndroid.ACTION_LOCATION_SOURCE_SETTINGS );

Then call Expo.getCurrentPositionAsync() … now you will get your location…

In my case, doing Location.getCurrentPositionAsync({ enableHighAccuracy: true }) does the trick (I’m on Genymotion)

hi, this is spaghetti code because I, not enough time.but it will solve your problems. I tested it . and worked correctly.

import React, { Component } from 'react';
import { Platform, Text, View, StyleSheet } from 'react-native';
import { Constants, Location, Permissions } from 'expo';

export default class MyLocation extends Component {
  state = {
    location: null,
    milad:null,
    errorMessage: null,
  };

  componentWillMount() {
    if (Platform.OS === 'android' && !Constants.isDevice) {
      this.setState({
        errorMessage: 'Oops, this will not work on Sketch in an Android emulator. Try it on your device!',
      });
    } else {
    //  this._getLocationAsync();
    let testlocation =  Expo.Location.watchPositionAsync({
      enableHighAccuracy: true,
      timeInterval :1,
      distanceInterval :1
    }, (loc)=>{
      if(loc.timestamp){
      this.setState({
        milad:loc
      })
    }
    else {
      console.log("nooooooooooooooooo loc");
    }
    });
    }
  }
  componentWillUnmount() {
    this.testlocation && this.testlocation.remove();
    this.testlocation = null;
  }

  _getLocationAsync = async () => {
    let { status } = await Permissions.askAsync(Permissions.LOCATION);
    if (status !== 'granted') {
      this.setState({
        errorMessage: 'Permission to access location was denied',
      });
    }

  //  let location = await Location.getCurrentPositionAsync({});
 //   this.setState({ location });
    
  };

  render() {
    let text = 'Waiting..';
    let milad = "milad location...";
    if (this.state.errorMessage) {
      text = this.state.errorMessage;
    } else if (this.state.location) {
      text = JSON.stringify(this.state.location);
    }
    milad = JSON.stringify(this.state.milad);

    return (
      <View style={styles.container}>
        <Text style={styles.paragraph}>{text}</Text>
        <Text> milad: </Text>
        <Text> {milad} </Text>
      
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    alignItems: 'center',
    justifyContent: 'center',
    paddingTop: Constants.statusBarHeight,
    backgroundColor: '#ecf0f1',
  },
  paragraph: {
    margin: 24,
    fontSize: 18,
    textAlign: 'center',
  },
});

Can confirm.

Android 6, physical device:

componentWillMount() {
  Location.getProviderStatusAsync()
    .then(status => {
      console.log('Getting status');
      if (!status.locationServicesEnabled) {
        throw new Error('Location services disabled');
      }
    })
    .then(_ => Permissions.askAsync(Permissions.LOCATION))
    .then(permissions => {
      console.log('Getting permissions');
      if (permissions.status !== 'granted') {
        throw new Error('Ask for permissions');
      }
    })
    .then(_ => {
      console.log('Have permissions');
      const subscriber = Location.watchPositionAsync({
        timeInterval: 1000,
      }, (location) => {
        console.log('Location change: ', location);
        this.setState({ location })
      });
      this.setState({ subscriber });
    })
    .catch(error => {
      console.log(error);
      this.setState({
        errorMessage: 'Permission to access location was denied',
      });
    });
}

console output:

Getting status
Getting permissions
Have permissions

Location is not returned, no error.

Is it working when you test on a Physical Device ? Location services on Emulators are buggy.

This was resolved after I set my Google Geocoding API key… https://docs.expo.io/versions/latest/sdk/location.html#expolocationsetapikeyapikey

Get your key here: https://developers.google.com/maps/documentation/geocoding/start