Question

有没有办法在移动设备上找到客户位置？例如，如果用户打开应用，我怎么能找出他们的大概位置？

例如，如果用户来自旧金山的CA，则会有一些类型标识符让我知道该用户来自旧金山CA.我真的不需要他们的确切位置只是县或一般的原产地。

我有一个参考：This SO Question 。我们能以某种方式在React-native中实现相同的功能吗？

Answer 1

不确定。基于该线程中的一个答案，您可以像这样在React Native中实现 -

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

export default class Test extends Component {
  constructor(props) {
    super(props);
    this.state = {
      countryName: '',
      regionName: ''
    };
  }

  componentDidMount() {
    var url = 'https://freegeoip.net/json/';
    fetch(url)
      .then((response) => response.json())
      .then((responseJson) => {
        //console.log(responseJson);
        this.setState({
          countryName: responseJson.country_name,
          regionName: responseJson.region_name
        });
      })
      .catch((error) => {
       //console.error(error);
      });
  }

  render() {
    return (
      <View style={styles.container}>
        <Text>Country: {this.state.countryName}</Text>
        <Text>Region: {this.state.regionName}</Text>
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: '#F5FCFF',
  },
});

AppRegistry.registerComponent('Test', () => Test);

Answer 2

首先，使用react-native-public-ip获取公共IP地址，然后使用api.ipstack.com

export const getUserCurrentCountry = () => async (dispatch) => {
  let res;
  try {
    const ACCESS_KEY = 'IPSTACK_ACCESS_KEY_HERE';
    const publicIpAddress = await publicIP();
    const url = `http://api.ipstack.com/${publicIpAddress}?access_key=${ACCESS_KEY}&format=1`;
    res = await fetch(url)
    res = await res.json();
    return res;
  } catch ({message}) {
    return null;
  }
};

结果将采用这种格式

{
  "ip":"",
  "type":"ipv4",
  "continent_code":"AS",
  "continent_name":"Asia",
  "country_code":"PK",
  "country_name":"Pakistan",
  "region_code":"SD",
  "region_name":"Sindh",
  "city":"Karachi",
  "zip":"74000",
  "latitude":24.882999420166016,
  "longitude":67.05799865722656,
  "location":{
    "geoname_id":1174872,
    "capital":"Islamabad",
    "languages":[
      {
        "code":"en",
        "name":"English",
        "native":"English"
      },
      {
        "code":"ur",
        "name":"Urdu",
        "native":"\u0627\u0631\u062f\u0648",
        "rtl":1
      }
    ],
    "country_flag":"http:\/\/assets.ipstack.com\/flags\/pk.svg",
    "country_flag_emoji":"\ud83c\uddf5\ud83c\uddf0",
    "country_flag_emoji_unicode":"U+1F1F5 U+1F1F0",
    "calling_code":"92",
    "is_eu":false
  }
}

获取没有地理位置的国家/城市API React-native？

2 个答案: