需要获取发帖人位置信息 

现通过wx.getLocation 获取经纬度

然后用  微信小程序JavaScript SDK 通过经纬度获取位置

但是同一手机 同一位置获取的位置都不一样 （有办法解决吗 还是正常现象）

demo.reverseGeocoder({

location: {

latitude: latitude,

longitude: longitude

},

success: function (res) {

var province = res.result.address_component.province;

var city = res.result.address_component.city;

var district = res.result.address_component.district;

var street = res.result.address_component.street;

var address = province + city + district + street;

that.setData({ latitude: latitude, longitude: longitude, province: province, city: city, area: district, street:street, address: address});

},