如何获取网络图片的尺寸？

Image("ttps://ts2.cn.mm.bing.net/th?id=OIP-C.pjrEHa3ulFj-RKeGS_CJwgHaF7&w=279&h=223&c=8&rs=1&qlt=90&o=6&dpr=1.5&pid=3.1&rm=2"）
  .width(200)
  .margin(10)
  .onComplete((msg)=>{
    console.log("===="+JSON.stringify(msg))
  })

{"width":418,"height":334,"componentWidth":650,"componentHeight":519.3779907226563,"loadingStatus":1,"contentWidth":650,"contentHeight":519.3779907226563,"contentOffsetX":0,"contentOffsetY":0}