wx.createCameraContext().takePhoto({

    quality: ‘high’,

    success: (res) => {

      let tempImagePath = res.tempImagePath

      wx.getFileSystemManager().readFile({

        filePath: tempImagePath,

        encoding: ‘base64’,

        success: (res) => {

          let avatarBase64 = res.data

          console.log(avatarBase64)

          wx.hideLoading()

        }

      })

    }

  })