如何测量获取控件高宽？

Question

如题：如何测量获取控件高宽？

Answer 1

可以通过onAreaChange回调获取控件的宽和高

示例代码

Column() {
  Text(this.message)
    .fontSize(50)
    .fontWeight(FontWeight.Bold)
}
.onAreaChange((oldArea:Area, newArea:Area)=> {
  hilog.info(0x0000, 'testTag', 'width = %{public}d, height = %{public}d',
    Number.parseFloat(newArea.width.toString()), Number.parseFloat(newArea.height.toString()));
})