微信小程序中用户授权信息逻辑判断

  //点击保存到相册

  baocun() {

    var that = this

    wx.getSetting({

      success(res) {

        console.log(res.authSetting)

        const scopeWritePhotosAlbum = res.authSetting['scope.writePhotosAlbum'];

        if (scopeWritePhotosAlbum === true || scopeWritePhotosAlbum === undefined) {

          // undefined为第一次进授权未定义的时候

          wx.saveImageToPhotosAlbum({

            filePath: that.data.imagePath,

            success(res) {

              console.log(123);

              wx.showModal({

                content: '图片已保存到相册，赶紧晒一下吧~',

                showCancel: false,

                confirmText: '好的',

                confirmColor: '#333',

                success: function (res) {

                  if (res.confirm) {

                    console.log('用户点击确定');

                    /* 该隐藏的隐藏 */

                    that.setData({

                      maskHidden: false

                    })

                  }

                },

                fail: function (res) {

                  console.log(11111)

                }

              })

            },

            fail(res) {

              console.log("用户取消保存");

            }

          })

        } else {

          //用户以前拒绝过，诱导用户打开授权界面

          console.log('用户以前拒绝过，诱导用户打开授权界面');

          wx.openSetting({

            success: (res2) => {

              console.log(res2);

              console.log('打开成功');

            },

            fail(res) {

              console.log("打开失败");

            }

          })

        }

      }

    })

  },