getLocationFun() { wx.showLoading({ title: '加载中...', mask: true, }) let that = this; // return new Promise((resolve, reject) => { let _locationChangeFn = (res) => { console.log('location change', res) wx.hideLoading() that.lon = res.longitude; that.lat = res.latitude; that.searchClick(); // 刷新列表 wx.offLocationChange(_locationChangeFn) } wx.startLocationUpdate({ success: (res) => { console.log(res); wx.onLocationChange(_locationChangeFn) // resolve() }, fail: (err) => { console.log('获取当前位置失败', err) wx.hideLoading() // reject() } }) // }) }, 这是监听经纬度代码，获取到经纬度后刷新列表，列表接口本身是很快的，请问有什么优化方案