React Native iOS 中的地理定位 [英] Geolocation in React Native iOS

问题描述

我正在尝试在我的应用程序中访问 navigator.geolocation.

I am trying to access navigator.geolocation in my application.

我还在 info.plist 中设置了NSLocationWhenInUseUsageDescription".

I have also set "NSLocationWhenInUseUsageDescription" in my info.plist.

但是，当我运行我的应用程序时，它会抛出一个错误，指出未定义不是一个对象(正在评估 navigator.geolocation.getCurrentPosition)".

But, when I run my app, It throws an error saying "undefined is not an object (evaluating navigator.geolocation.getCurrentPosition)" .

这是我的代码 -

import React, { Component } from 'react';
import {
  AppRegistry,
  Image,
  ListView,
  StyleSheet,
  Text,
  Navigator,
  TouchableHighlight,
  Alert,
  TouchableOpacity,
  View
} from 'react-native';
import Spinner from 'react-native-loading-spinner-overlay'
var GiftedSpinner = require('react-native-gifted-spinner');
var GLOBAL = require('./Globals');
var stateName;
var latitude;
var longitude;

class PersonByLocationPage extends Component {

  constructor(props) {
    super(props);
    this.data = this.props.data;

     navigator.geolocation.getCurrentPosition(
                        (position) => {
                           var crd = position.coords;
                           latitude = crd.latitude;
                           longitude = crd.longitude;
                            // alert(latitude);
                            // alert(longitude);
                          },
                          (error) => alert(error.message),
                          {enableHighAccuracy: true, timeout: 20000, maximumAge: 1000}
                      );


    this.REQUEST_URL = 'sample';


    this.state = {
      dataSource: new ListView.DataSource({
        rowHasChanged: (row1, row2) => row1 !== row2,
      }),
      loaded: false,
      networkError: false,
    };
  }

谁能告诉我我做错了什么?

Can anybody tell what I am doing wrong ?

推荐答案

你必须添加

Xcode 中的 NSLocationWhenInUseUsageDescription

NSLocationWhenInUseUsageDescription in Xcode

和

Xcode 中的 libRCTGeolocation.a

libRCTGeolocation.a in Xcode

您可以找到如何从http://www.slideshare.net/kobkrit/reactnative-tutorial-10-camera-roll-gallery-camera-native-modules-by-making-selfies-scoreboard-apps

这篇关于React Native iOS 中的地理定位的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！