app.js

//app.js
let config = require('config.js')
App({
  onLaunch: function() {
    var _this = this;
    //载入学校位置数据
    _this.loadSchoolConf()
    //如果已经授权，提前获取定位信息
    wx.getSetting({
      success(res) {
        if (res.authSetting['scope.userLocation']) {
          //获取地理位置
          wx.getLocation({
            type: 'wgs84', // 默认为 wgs84 返回 gps 坐标，gcj02 返回可用于 wx.openLocation 的坐标  
            success: function(res) {
              _this.globalData.latitude = res.latitude;
              _this.globalData.longitude = res.longitude;
              _this.globalData.islocation = true
            }
          })
        }
      }
    })
  },

  loadNetWorkScoolConf: function() {
    var _this = this
    return new Promise(function(resolve, reject) {
      if (!_this.debug) {
        // 优先读取缓存信息
        var map = wx.getStorageSync('map')
        var introduce = wx.getStorageSync('introduce')
        if (map && introduce) {
          _this.globalData.map = map;
          _this.globalData.introduce = introduce;
        }

        // 再加载网络数据
        wx.request({
          url: config.updateUrl,
          header: {
            'content-type': 'application/json'
          },
          success: function(res) {
            console.log("加载远程数据")
            if (res.data.map && res.data.map.length > 0) {
              //刷新数据
              _this.globalData.map = res.data.map;
              _this.globalData.introduce = res.data.introduce;

              // 存储学校位置数据于缓存中
              wx.setStorage({
                key: "map",
                data: res.data.map
              })
              wx.setStorage({
                key: "introduce",
                data: res.data.introduce
              })
            }
          },
          complete: function(info) {
            resolve();
          }
        })
      } else {
        resolve();
      }
    });
  },

  loadSchoolConf: function() {
    var _this = this
    // 载入本地数据
    _this.globalData.map = _this.school.map;
    _this.globalData.introduce = _this.school.introduce;
    _this.loadNetWorkScoolConf().then(function() {
      // 渲染id
      for (let i = 0; i < _this.globalData.map.length; i++) {
        for (let b = 0; b < _this.globalData.map[i].data.length; b++) {
          _this.globalData.map[i].data[b].id = b + 1;
        }
      }
    })

  },
  debug: config.debug, //开启后只调用本地数据
  imgCDN: config.imgCDN,
  school: require('/resources/' + config.school),
  globalData: {
    userInfo: null,
    map: null,
    introduce: null,
    latitude: null,
    longitude: null
  }
})