Applet positioning, Tencent access to location services

Access location services Tencent official document: https://lbs.qq.com/qqmap_wx_jssdk/index.html

A. Tencent location service access step

1. Public registration number scan code, choose a small program you want to authorize to authorize success
2. Then the page will become Tencent location services
   
3. Register a new account
   
4. registration success
   
5. Application key
   
6. Configure key
   
   fill WebServiceAPI authorized or licensed IP whitelist
7. Set in the micro-letter domain name applet
   development -> Development Settings -> request legitimate domain name add https://apis.map.qq.com
   

Second, in the applet initialization Tencent location services

1. Download the micro-channel applet JavaScriptSDK down, and put the new js lib folder
2. Load js introduced

var QQMapWX = require('../../libs/qqmap-wx-jssdk.js');
var qqmapsdk;
Page({
    onLoad: function () {
        // 实例化API核心类
        qqmapsdk = new QQMapWX({
            key: '申请的key'
        });
    }
})

Third, the positioning in the applet

Small micro-channel programs - get the current location of the city
1, acquires the current location, the user must first get authorization wx.openSetting;
2, the micro-channel interfaces getLocation acquires the current user location (micro-channel is returned latitude and longitude, speed, etc. parameters) ;
3, qqmapsdk.reverseGeocoder location services Tencent Tencent map inverse address resolution method to obtain the name of the current position of the coordinates;

Applet has a wx.getLocationmethod to obtain the latitude and longitude positioning can be achieved, but first need to allow the user to look at the permissions

// miniprogram/pages/index.js
var QQMapWX = require('../../../libs/qqmap-wx-jssdk.js');
var qqmapsdk;
Page({
  data: {
    cost: '--',
    scale: 18,
    longitude: '',
    latitude: '',
    markers: []
  },
  submit_order(){
    wx.navigateTo({
      url: '/pages/user/waitrec/waitrec'
    })
  },
  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
    wx.getSetting({
      success: (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
                      this.getAddress();
                    } else {
                      wx.showToast({
                        title: '授权失败',
                        icon: 'none',
                        duration: 1000
                      })
                    }
                  }
                })
              }
            }
          })
        } else {
          //调用wx.getLocation的API
          this.getAddress();
        }
      }
    });
    //判断全局变量寄件信息和收件信息，都存在则显示费用
    var app = getApp();
    if (app.globalData.send_info.address && app.globalData.receive_info.address) {
      this.setData({
        cost: 100
      })
    }
  },
  //获取定位信息
  getAddress(){
    // 实例化腾讯地图API核心类
    qqmapsdk = new QQMapWX({
      key: 'LXKBZ-IQY6X-XAM4F-ZTULL-OMKDQ-IBB3U'
    });
    var that = this;
    //获取当前位置
    wx.getLocation({
      type: 'wgs84',
      success: function (res) {
        var lat = res.latitude;
        var lon = res.longitude;
        //根据坐标获取当前位置名称，腾讯地图逆地址解析
        qqmapsdk.reverseGeocoder({
          location: { latitude: lat, longitude: lon },
          success: function (res) {
            var address = res.result.address;
            that.setData({
              latitude: lat,
              longitude: lon,
              markers: [{
                id: '1',
                iconPath: "../../../images/icon_cur_position.png",
                width: 22,
                height: 32,
                latitude: lat,
                longitude: lon,
                callout: {
                  content: address,
                  color: "#393939",
                  textAlign: 'center',
                  fontSize: 13,
                  borderRadius: 20,
                  bgColor: "#ffffff",
                  padding: 10,
                  display: "ALWAYS"
                },
              }]
            })
          }
        });
      }
    });
  }
})

Relevant official website
wx.getLocation
authorization