How to get current location using react-native-maps

Im trying to render a map at the current user geolocation on android device, using react-native maps.

Here is what i've got so far:

import React, { Component } from 'react';

import {
  View,
  StyleSheet,
  Dimensions,
} from 'react-native';

import MapView from 'react-native-maps';

const {width, height} = Dimensions.get('window')

const SCREEN_HEIGHT = height
const SCREEN_WIDTH = width
const ASPECT_RATIO = width / height
const LATITUDE_DELTA = 0.0922
const LONGITUDE_DELTA = LATITUDE_DELTA * ASPECT_RATIO

class MapComponent extends Component {
  constructor() {
    super()
    this.state = {
      initialPosition: {
        latitude: 0,
        longitude: 0,
        latitudeDelta: 0,
        longitudeDelta: 0,
      },
    }
  }

  componentDidMount() {
    navigator.geolocation.getCurrentPosition((position) => {
      var lat = parseFloat(position.coords.latitude)
      var long = parseFloat(position.coords.longitude)

      var initialRegion = {
        latitude: lat,
        longitude: long,
        latitudeDelta: LATITUDE_DELTA,
        longitudeDelta: LONGITUDE_DELTA,
      }

      this.setState({initialPosition: initialRegion})
    },
    (error) => alert(JSON.stringify(error)),
    {enableHighAccuracy: true, timeout: 20000, maximumAge: 1000});
  }


  renderScreen = () => {
      return (
        <View style={styles.container}>
          <MapView
            style={styles.map}
            initialRegion={this.state.initialPosition}/>
        </View>
      );
  }

  render() {
    return (
      this.renderScreen()
    );
  }
}

const styles = StyleSheet.create({
  container: {
    position: 'absolute',
    top: 0,
    left: 0,
    right: 0,
    bottom: 0,
    justifyContent: 'flex-end',
    alignItems: 'center',
  },
  map: {
    position: 'absolute',
    top: 0,
    left: 0,
    right: 0,
    bottom: 0,
  },
});

export default MapComponent;

The map renders, but not in current device geolocation, as expected. (it renders in the middle of the ocean)

The permissions are already set at AndroidManifest.xml as:

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

After 20 seconds, i get an alert saying, "Location request timed out" "code 3"

What i'm doing wrong?

I'm not sure but there is an issue ("Geolocation timed out, code 3") which looks related

For anyone else struggling with this issue on android, try removing the maximumAge: 2000 option parameter. This option was causing geolocation to either timeout or crash the app.