mili_mini/pages/mine/myqrcode/myqrcode.js

// pages/mine/myqrcode/myqrcode.js
const app = getApp()
Page({
  data: {
    qrcodepath: null,
    loaddisplay: 'none',
    sqshow: false
  },
  finish: function () {
    this.setData({
      loaddisplay: 'none'
    })
  },
  onShow: function() {
    this.setData({
      sqshow: false
    })
  },
  onLoad: function (options) {
    this.setData({
      loaddisplay: true
    })
    var that = this
    wx.request({
      url: app.globalData.url + '/CreatePOP',
      method: 'get',
      data: {
        wv_phone: app.globalData.userphone
      },
      success: function (res) {
        that.setData({ 
          qrcodepath: res.data,
          loaddisplay: 'none'
        })
      },
      fail() {
        app.timeOut()
      }
    })
		let _this = this;
		_this.setData({
			navH: app.globalData.navHeight
		})
  },
  saveImgToPhotosAlbumTap: function () {
    var that = this
    wx.showLoading({
      title: '保存中......',
      icon: 'loading',
      duration: 5500
    })
    wx.downloadFile({
      url: this.data.qrcodepath,
      success: function (res) {
        wx.saveImageToPhotosAlbum({
          filePath: res.tempFilePath,
          success: function (res) {
            wx.hideLoading()
            wx.showToast({
              title: "保存成功",
              icon: "success",
            })
          },
          fail: function (res) {
            wx.hideLoading()
            wx.showToast({
              title: "保存失败,请点击按钮授权",
              icon: "none",
            })
            that.setData({
              sqshow: true
            })
          }
        })
      },
      fail: function () {
        wx.hideLoading()
        wx.showToast({
          title: "保存失败,请点击按钮授权",
          icon: "none",
        })
        that.setData({
          sqshow: true
        })
      }
    })
  }
})