export function downloadFile({url}) { return new Promise((resolve, reject) => { wx.downloadFile({ url, success: resolve, fail: reject }); }) } export function getQueryString(url, name) { let reg = new RegExp('(^|/?|&)' + name + '=([^&]*)(&|$)', 'i'); let r = url.substr(1).match(reg); if (r != null) { return unescape(r[2]); } return null; } export function randomString(e) { for (var t = "", i = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789", n = 0; n < e; n++) t += i.charAt(Math.floor(Math.random() * i.length)); return t } export function isPhoneX () { return new Promise((resolve) => { wx.getSystemInfo({ success: res=>{ let modelmes = res.model; if (modelmes.search('iPhone X') != -1) { resolve(true) } resolve(false) } }) }) } export function getLocation () { return new Promise ( (resolve, reject) => { wx.getLocation({ type: 'wgs84', success: function (res) { var latitude = res.latitude; var longitude = res.longitude; getApp().globalData.qqmapsdk.reverseGeocoder({ location: { latitude: latitude, longitude: longitude }, success: function (res) { var ad_info = res.result.ad_info; let city = ad_info.city.replace('市', ''); resolve(city) }, fail:function (res) { wx.showModal({ title: '定位失败', }); } }); }, fail(err) { wx.showModal({ title: '定位失败,请手动选择城市', }); } }) }) }