实现横竖屏切换鸿蒙示例代码

const topWindow = await window.getLastWindow(getContext(this));
await topWindow.setPreferredOrientation(window.Orientation.LANDSCAPE_INVERTED);
...
const topWindow = await window.getLastWindow(getContext(this));
await topWindow.setPreferredOrientation(window.Orientation.PORTRAIT);
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Column() {
  Button($r('app.string.button_rotate'))
    .onClick(() => {
      if (this.angle === 0) {
        this.angle = 90;
        this.newWidth = this.tempWidth;
        this.newHeight = this.tempHeight;
      } else {
        this.angle = 0;
        this.newWidth = this.tempWidth;
        this.newHeight = this.tempHeight;
      }
    });
}
.onAreaChange((oldValue: Area, newValue: Area) => {
  this.tempWidth = newValue.height as number;
  this.tempHeight = newValue.width as number;
})
.height(this.newHeight)
.width(this.newWidth)
.backgroundColor(Color.Blue)
.rotate({ angle: this.angle });
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