ArkTs鸿蒙 获取图片的真是宽高

Image(item).width('100%').autoResize(true).onComplete(callback =>{
   //回调信息
  console.log("---"+callback.width+"  "+ callback.height +"  "+callback.componentWidth +"  "+ callback.componentHeight);
  let play = display.getDefaultDisplaySync();
  this.highs =px2vp( play.width/750 *520);
}).height(this.highs)