微信小程序获取当前地理位置中文_微信小程序-获取当前城市位置

微信小程序-获取当前城市位置

1, 获取当前地理位置,首先要拿到用户的授权wx.openSetting;

2,微信的getLocation接口,获取当前用户的地理位置(微信返回的是经纬度,速度等参数);

3,微信没有将经纬度直接转换为地理位置,借用腾讯位置服务中关于微信小程序的地理转换JS SDK 的API(返回信息中包括国家,省,市,区,经纬度等地理位置)

步骤描述清楚以后,下面就开始按步骤操作了;(本文仅仅讲述如何获取用户地理位置的授权)

图示为获取用户地理位置授权弹窗

在用户首次进入某页面(需要地理位置授权)时候,在页面进行onLoad,onShow时候,进行调用wx.getLocation要求用户进行授权;以后每次进入该页面时,通过wx.getSetting接口,返回用户授权具体信息。

wx.getSetting接口具体API地址链接为点击打开链接

上图中scope.userLocation就是地理授权的标志;

当该标志是underfind,表示用户初次进入该页面,当该标志是false,表示用户初次进入该页面拒绝了地理授权,应进行重新要求获取授权。

wx.getSetting({

success: (res) => {

console.log(JSON.stringify(res))

// res.authSetting['scope.userLocation'] == undefined 表示 初始化进入该页面

// res.authSetting['scope.userLocation'] == false 表示 非初始化进入该页面,且未授权

// res.authSetting['scope.userLocation'] == true 表示 地理位置授权

if (res.authSetting['scope.userLocation'] != undefined && res.authSetting['scope.userLocation'] != true) {

wx.showModal({

title: '请求授权当前位置',

content: '需要获取您的地理位置,请确认授权',

success: function (res) {

if (res.cancel) {

wx.showToast({

title: '拒绝授权',

icon: 'none',

duration: 1000

})

} else if (res.confirm) {

wx.openSetting({

success: function (dataAu) {

if (dataAu.authSetting["scope.userLocation"] == true) {

wx.showToast({

title: '授权成功',

icon: 'success',

duration: 1000

})

//再次授权,调用wx.getLocation的API

} else {

wx.showToast({

title: '授权失败',

icon: 'none',

duration: 1000

})

}

}

})

}

}

})

} else if (res.authSetting['scope.userLocation'] == undefined) {

//调用wx.getLocation的API

}

else {

//调用wx.getLocation的API

}

}

})

在拿到用户授权以后,使用微信的API获取当前位置的经纬度微信获取位置API

// 微信获得经纬度

getLocation: function () {

let that = this;

wx.getLocation({

type: 'wgs84',

success: function (res) {

// console.log(JSON.stringify(res))

var latitude = res.latitude

var longitude = res.longitude

var speed = res.speed

var accuracy = res.accuracy;

that.getLocal(latitude, longitude)

},

fail: function (res) {

console.log('fail' + JSON.stringify(res))

}

})

},

这里,我们进行使用的是腾讯位置服务;专为小程序开发者提供LBS数据服务工具包,可以在小程序中调用腾讯位置服务的POI检索、关键词输入提示、地址解析、逆地址解析、行政区划和距离计算等数据。

1,得到开发者秘钥

2,下载微信小程序javaScriptSDK,

3,安全域名设置,在“设置” -> “开发设置”中设置request合法域名,添加http://api.map.qq.com

在文件中引入对应的javaScriptSDK文件

var QQMapWX = require('../../../utils/qqmap-wx-jssdk.js');

var qqmapsdk;

在文件中进行js调用,

// 获取当前地理位置

getLocal: function (latitude, longitude) {

let that = this;

let serverUrl = that.globalData.serverUrl

qqmapsdk.reverseGeocoder({

location: {

latitude: latitude,

longitude: longitude

},

success: function (res) {

//console.log(JSON.stringify(res));

// let province = res.result.ad_info.province

let city = res.result.ad_info.city

// console.log(province + '-----' + city);

// that.setData({

// province: province,

// city: city,

// latitude: latitude,

// longitude: longitude

// })

//根据城市名称在后台数据库查询出对应的id

wx.request({

url: serverUrl + '/wx/ma/getAreaIdByAreaName?areaName=' + city,

success(res) {

//保存到缓存中

let user = that.globalData.user

user.cityId = res.data.areaId

user.cityName = res.data.areaName

that.globalData.user = user

wx.setStorageSync('user', user)

},

fail(res) {

console.log("/wx/ma/getAreaIdByAreaName", res.data)

}

})

},

fail: function (res) {

console.log(res);

},

complete: function (res) {

// console.log(res);

}

});

},

只在小程序加载的时候调用一次,所以写在app.js里面

const util = require('utils/util.js')

var QQMapWX = require('utils/qqmap-wx-jssdk.min.js');

var qqmapsdk = new QQMapWX({

key: '开发者自己申请的key'

});

App({

onShow: function() {

},

onLaunch: function() {

wx.getSetting({

success: (res) => {

console.log(JSON.stringify(res))

// res.authSetting['scope.userLocation'] == undefined 表示 初始化进入该页面

// res.authSetting['scope.userLocation'] == false 表示 非初始化进入该页面,且未授权

// res.authSetting['scope.userLocation'] == true 表示 地理位置授权

if (res.authSetting['scope.userLocation'] != undefined && res.authSetting['scope.userLocation'] != true) {

} else if (res.authSetting['scope.userLocation'] == undefined) {

//调用wx.getLocation的API

_this.getLocation();

} else if (res.authSetting['scope.userLocation'] == true) {

//调用wx.getLocation的API

_this.getLocation();

}

}

})

},

// 微信获得经纬度

getLocation: function () {

let that = this;

wx.getLocation({

type: 'wgs84',

success: function (res) {

// console.log(JSON.stringify(res))

var latitude = res.latitude

var longitude = res.longitude

var speed = res.speed

var accuracy = res.accuracy;

that.getLocal(latitude, longitude)

},

fail: function (res) {

console.log('fail' + JSON.stringify(res))

}

})

},

// 获取当前地理位置

getLocal: function (latitude, longitude) {

let that = this;

let serverUrl = that.globalData.serverUrl

qqmapsdk.reverseGeocoder({

location: {

latitude: latitude,

longitude: longitude

},

success: function (res) {

//console.log(JSON.stringify(res));

// let province = res.result.ad_info.province

let city = res.result.ad_info.city

// console.log(province + '-----' + city);

// that.setData({

// province: province,

// city: city,

// latitude: latitude,

// longitude: longitude

// })

wx.request({

url: serverUrl + '/wx/ma/getAreaIdByAreaName?areaName=' + city,

success(res) {

//保存到缓存中

let user = that.globalData.user

user.cityId = res.data.areaId

user.cityName = res.data.areaName

that.globalData.user = user

wx.setStorageSync('user', user)

},

fail(res) {

console.log("/wx/ma/getAreaIdByAreaName", res.data)

}

})

},

fail: function (res) {

console.log(res);

},

complete: function (res) {

// console.log(res);

}

});

},

如果每次打开首页,都要提示授权,在index.js书写

//index.js

//获取应用实例

const app = getApp();

var QQMapWX = require('../../../utils/qqmap-wx-jssdk.js');

var qqmapsdk;

Page({

data: {

province: '',

city: '',

latitude: '',

longitude: ''

},

onLoad: function () {

qqmapsdk = new QQMapWX({

key: 'XXXX-XXXX-XXXX-XXXX' //这里自己的key秘钥进行填充

});

},

onShow: function () {

let vm = this;

vm.getUserLocation();

},

getUserLocation: function () {

let vm = this;

wx.getSetting({

success: (res) => {

console.log(JSON.stringify(res))

// res.authSetting['scope.userLocation'] == undefined 表示 初始化进入该页面

// res.authSetting['scope.userLocation'] == false 表示 非初始化进入该页面,且未授权

// res.authSetting['scope.userLocation'] == true 表示 地理位置授权

if (res.authSetting['scope.userLocation'] != undefined && res.authSetting['scope.userLocation'] != true) {

wx.showModal({

title: '请求授权当前位置',

content: '需要获取您的地理位置,请确认授权',

success: function (res) {

if (res.cancel) {

wx.showToast({

title: '拒绝授权',

icon: 'none',

duration: 1000

})

} else if (res.confirm) {

wx.openSetting({

success: function (dataAu) {

if (dataAu.authSetting["scope.userLocation"] == true) {

wx.showToast({

title: '授权成功',

icon: 'success',

duration: 1000

})

//再次授权,调用wx.getLocation的API

vm.getLocation();

} else {

wx.showToast({

title: '授权失败',

icon: 'none',

duration: 1000

})

}

}

})

}

}

})

} else if (res.authSetting['scope.userLocation'] == undefined) {

//调用wx.getLocation的API

vm.getLocation();

}

else {

//调用wx.getLocation的API

vm.getLocation();

}

}

})

},

// 微信获得经纬度

getLocation: function () {

let vm = this;

wx.getLocation({

type: 'wgs84',

success: function (res) {

console.log(JSON.stringify(res))

var latitude = res.latitude

var longitude = res.longitude

var speed = res.speed

var accuracy = res.accuracy;

vm.getLocal(latitude, longitude)

},

fail: function (res) {

console.log('fail' + JSON.stringify(res))

}

})

},

// 获取当前地理位置

getLocal: function (latitude, longitude) {

let vm = this;

qqmapsdk.reverseGeocoder({

location: {

latitude: latitude,

longitude: longitude

},

success: function (res) {

console.log(JSON.stringify(res));

let province = res.result.ad_info.province

let city = res.result.ad_info.city

vm.setData({

province: province,

city: city,

latitude: latitude,

longitude: longitude

})

},

fail: function (res) {

console.log(res);

},

complete: function (res) {

// console.log(res);

}

});

}

})

最后记得在app.json添加permission

{

"pages": [

"pages/index/index"

],

"window": {

"backgroundTextStyle": "light",

"navigationBarBackgroundColor": "#fff",

"navigationBarTitleText": "****",

"navigationBarTextStyle": "black"

},

"tabBar": {

"position": "bottom",

"backgroundColor": "#fff",

"borderStyle": "black",

"color": "#a9a9a9",

"selectedColor": "#ffa904",

"list": [

{

"pagePath": "pages/index/index",

"text": "好物",

"selectedIconPath": "assets/image/icon_nav_haowu_selected.png",

"iconPath": "assets/image/icon_nav_haowu.png"

},

{

"pagePath": "pages/release/release",

"text": "发布",

"selectedIconPath": "assets/image/icon_nav_publish_selected.png",

"iconPath": "assets/image/icon_nav_publish.png"

},

{

"pagePath": "pages/mine/mine",

"text": "我",

"selectedIconPath": "assets/image/icon_nav_me_selected.png",

"iconPath": "assets/image/icon_nav_me.png"

}

]

},

"permission": {

"scope.userLocation": {

"desc": " "

}

}

}


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