HarmonyOS从相册中选取一张图片，如何查看尺寸和大小信息

import {BusinessError} from '@ohos.base' 
// 获取图片大小 
pixelMap.getImageInfo().then( (info : image.ImageInfo) => { 
  console.info('info.width = ' + info.size.width); 
  console.info('info.height = ' + info.size.height); 
}).catch((err : BusinessError) => { 
  console.error("Failed to obtain the image pixel map information.And the error is: " + err); 
});