getCityNameOFLocation: function() {
    var that = this;
    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){
        console.log("定位成功");
        var locationString = res.latitude + "," + res.longitude;   //获取的经度纬度
        wx.request({
          url: ‘http://apis.map.qq.com/ws/geocoder/v1/?l&get_poi=1‘,  //根据经纬度转换成具体地址
          data: {
            "key" : "YLFBZ-WHAWI-ZXUGH-53Q65-TOJ7E-ADBNQ",
            "location" : locationString
          },
          method: ‘GET‘,
          // header: {}, 
          success: function(res){
            // success
            console.log("请求成功");
            console.log("请求数据:" + res.data.result.address);
          },
          fail: function() {
            // fail
            console.log("请求失败");
          },
          complete: function() {
            // complete
            console.log("请求完成");
          }
        })
      },
      fail: function() {
        // fail
        console.log("定位失败");
      },
      complete: function() {
        // complete
        console.log("定位完成");
      }
    })
  }