小程序二维码--保存图片

小鱼儿 2021-11-24 01:56 440阅读 5赞

// 保存海报
      postSave(e) {
        wx.showLoading({
          title: '保存中...'
        })
        wx.downloadFile({
          url: 'http://xxx.com/poster.png',
          success: function (res) {
            //图片保存到本地
            wx.saveImageToPhotosAlbum({
              filePath: res.tempFilePath,
              success: function (data) {
                wx.hideLoading()
                wx.showModal({
                  title: '提示',
                  content: '您的推广海报已存入手机相册，赶快分享给好友吧',
                  showCancel:false,
                })
              },
              fail: function (err) {
                if (err.errMsg === "saveImageToPhotosAlbum:fail:auth denied" || err.errMsg === "saveImageToPhotosAlbum:fail auth deny") {
                  // 这边微信做过调整，必须要在按钮中触发，因此需要在弹框回调中进行调用
                  wx.showModal({
                    title: '提示',
                    content: '需要您授权保存相册',
                    showCancel: false,
                    success:modalSuccess=>{
                      wx.openSetting({
                        success(settingdata) {
                          console.log("settingdata", settingdata)
                          if (settingdata.authSetting['scope.writePhotosAlbum']) {
                            wx.showModal({
                              title: '提示',
                              content: '获取权限成功,再次点击图片即可保存',
                              showCancel: false,
                            })
                          } else {
                            wx.showModal({
                              title: '提示',
                              content: '获取权限失败，将无法保存到相册哦~',
                              showCancel: false,
                            })
                          }
                        },
                        fail(failData) {
                          console.log("failData",failData)
                        },
                        complete(finishData) {
                          console.log("finishData", finishData)
                        }
                      })
                    }
                  })
                }
              },
              complete(res) {
                wx.hideLoading()
              }
            })
          }
        })
      }