wx.chooseImage({

  count: 1,

  sizeType: ['original'],

  sourceType: ['camera'],

  success: res => {

    let filePaths = res.tempFilePaths[0];

    that.data.image = filePaths;

    let endWith = filePaths.split('.');

    const fs = wx.getFileSystemManager();

    fs.mkdir({

      dirPath: `${wx.env.USER_DATA_PATH}/newDir`,

      recursive: true,

      success: res => {

        console.log(res, 'res')

      },

      fail: err => {

        console.log(err, 'err')

      },

      complete: result => {

       if (result.errMsg == 'mkdir:ok' || result.errMsg == `mkdir:fail file already exists "${wx.env.USER_DATA_PATH}/newDir"`) {

         for (let i = 0; i < 50; i++) {

            that.data.num++;

            fs.rename({

              oldPath: filePaths,

              newPath: `${wx.env.USER_DATA_PATH}/newDir/${that.data.num}.${endWith[endWith.length-1]}`,

              success: res => {},

              fail: err => {}

            })

        }

        }

          }

        });

      }

    });