freifunk-app/components/SwitchExample.js

import React, { Component } from 'react'
import { View, Text, Switch, StyleSheet } from 'react-native'
import { PermissionsAndroid } from 'react-native';


class SwichExample extends Component {
    constructor(props) {
        super(props);

        this.state = {
            latitude: null,
            longitude: null,
            error: null,
        };
    }
    async requestLocationPermission() {
        const chckLocationPermission = PermissionsAndroid.check(PermissionsAndroid.PERMISSIONS.ACCESS_FINE_LOCATION);
        if (chckLocationPermission === PermissionsAndroid.RESULTS.GRANTED) {
            alert("You've access for the location");
        } else {
            try {
                const granted = await PermissionsAndroid.request(PermissionsAndroid.PERMISSIONS.ACCESS_FINE_LOCATION,
                    {
                        'title': 'Cool Location App required Location permission',
                        'message': 'We required Location permission in order to get device location ' +
                            'Please grant us.'
                    }
                )
                if (granted === PermissionsAndroid.RESULTS.GRANTED) {
                    alert("You've access for the location");
                } else {
                    alert("You don't have access for the location");
                }
            } catch (err) {
                alert(err)
            }
        }
    };



    componentDidMount() {
        navigator.geolocation.getCurrentPosition(
            (position) => {
              this.setState({
                latitude: position.coords.latitude,
                longitude: position.coords.longitude,
                error: null,
              });
            },
            (error) => this.setState({ error: error.message }),
            { enableHighAccuracy: false, timeout: 20000, maximumAge: 1000 },
          );
    }

    render() {

        return (
            <View style={{ flexGrow: 1, alignItems: 'center', justifyContent: 'center' }}>
            <Text
                onPress={() => this.requestLocationPermission()}>
                Request Location Permission
            </Text>
                <Text>Latitude: {this.state.latitude}</Text>
                <Text style={{paddingBottom: 10}}>Longitude: {this.state.longitude}</Text>
                {this.state.error ? <Text>Error: {this.state.error}</Text> : null}
            </View>
        )
    }
}
export default SwichExample;