小程序点击保存图片

wx.downloadFile({

      url: 'https:xxx/f686281da7e79c5ca68ac2e8119af84f.jpg', //仅为示例，并非真实的资源

      success: function (res) {

        // 只要服务器有响应数据，就会把响应内容写入文件并进入 success 回调，业务需要自行判断是否下载到了想要的内容

        if (res.statusCode === 200) {

          wx.saveImageToPhotosAlbum({

            title:"",

            filePath: res.tempFilePath,

            success(res) {

              ui.toast('保存图片成功')

              that.setData({

                bol:true

              })

              // 保存图片成功之后

              // 调用小程序的扫一扫功能

              // wx.scanCode({

              //   success(res) {

              //     console.log(res.result)

              //   }

              // })

            },

            fail(res) {

              console.log('fail')

              console.log(res)

              ui.toast('保存图片失败')

              wx.getSetting({

                success (res) {

                  console.log(res.authSetting)

                  res.authSetting = {

                    "scope.userInfo": true,

                    "scope.userLocation": true

                  }

                }

              })

            }

          })

        }

      }

    })

 

 

 

依然存在的bug  当用户第一次拒绝时，第二次依然是拒绝