小程序保存图片到相册取消授权、拒绝授权到再授权

fail:auth denied
fail auth deny

      fail: function(err) {
        console.log(err);
        if (err.errMsg === 'saveImageToPhotosAlbum:fail auth deny') {
          // this.openSettingBtnHidden = false
          that.setData({
            openSettingBtnHidden: false
          })
          wx.showToast({
            title: '缺少授权，请点击授权',
            icon: 'none',
            duration: 2000
          })
          // this.$apply()
        } else if (err.errMsg === 'saveImageToPhotosAlbum:fail cancel') {
          // this.openSettingBtnHidden = false
          that.setData({
            openSettingBtnHidden: true
          })
          wx.showToast({
            title: '取消保存',
            icon: 'none',
            duration: 2000
          })
          // this.$apply()
        } else if (err.errMsg === 'saveImageToPhotosAlbum:fail:auth denied') {
          // this.openSettingBtnHidden = false
          that.setData({
            openSettingBtnHidden: false
          })
          wx.showToast({
            title: '已拒绝授权，请点击重新授权',
            icon: 'none',
            duration: 2000
          })
          // this.$apply()
        }

        // console.log(err);
        // if (err.errMsg === "saveImageToPhotosAlbum:fail auth deny") {
        // console.log("用户一开始拒绝了，我们想再次发起授权")
        // wx.authorize({
        //   scope: 'scope.writePhotosAlbum',
        //   success(successdata) {
        //     console.log('授权成功')
        //   },
        //   fail(faildata) {
        //     console.log('授权失败')
        //     console.log(faildata)
        //   }
        // })
        // console.log('打开设置窗口')
        // wx.openSetting({
        //   success(settingdata) {
        //     console.log(settingdata)
        //     if (settingdata.authSetting['scope.writePhotosAlbum']) {
        //       console.log('获取权限成功，给出再次点击图片保存到相册的提示。')
        //     } else {
        //       console.log('获取权限失败，给出不给权限就无法正常使用的提示')
        //     }
        //   }
        // })
        // }
      },

  // 手动授权
  handleSetting(e) {
    var that = this
    if (!e.detail.authSetting['scope.writePhotosAlbum']) {
      wx.showModal({
        title: '警告',
        content: '若不打开授权，则无法将图片保存在相册中！',
        showCancel: false
      })
      that.setData({
        openSettingBtnHidden: true
      })
      // this.openSettingBtnHidden = true
    } else {
      wx.showModal({
        title: '提示',
        content: '您已授权，赶紧将图片保存在相册中吧！',
        showCancel: false
      })
      that.setData({
        openSettingBtnHidden: true
      })
      // this.openSettingBtnHidden = true
    }
    // this.$apply()
  },

<button type='primary' class='openSetting' open-type="openSetting" bindopensetting='handleSetting' hidden='{{openSettingBtnHidden}}'>去授权</button>