HarmonyOS 针对PAD形态做适配

方案一：所有设备均支持横竖屏旋转

直接在对应 Ability 的 module.json5 中增加方向配置，将方向配置为

auto_rotation_restricted (传感器开关打开，方向可随传感器旋转)

"name": "EntryAbility",
"srcEntry": "./ets/entryability/EntryAbility.ts",
"description": "$string:ability_desc",
"icon": "$media:icon",
"label": "$string:ability_label",
"startWindowIcon": "$media:startIcon",
"orientation": "auto_rotation_restricted",

方案二：不同设备上采用不同策略，平板上需要支持旋转

此方案需要在代码中根据设备类型和状态动态控制

onWindowStageCreate(windowStage: window.WindowStage): void {
  windowStage.getMainWindow().then((windowObj) => {
  this.windowObj = windowObj
  this.setDefaultOrientation();
});
display.on('change', (displayId: number) => {
  if (displayId == 0) {
    this.setDefaultOrientation();
  }
});
}
setDefaultOrientation(): void {
  const BREAKPOINT_MD = 480;
  let displayInfo: display.Display = display.getDefaultDisplaySync();
  if (displayInfo == null) {
  console.error('displayInfo is empty!');
  return;
}
let displayWidth: number = px2vp(displayInfo.width);
let displayHeight: number = px2vp(displayInfo.height);
if (displayWidth < BREAKPOINT_MD || displayHeight < BREAKPOINT_MD) {
  this.windowObj.setPreferredOrientation(window.Orientation.PORTRAIT);
} else {
  this.windowObj.setPreferredOrientation(window.Orientation.AUTO_ROTATION
  _RESTRICTED);
}
}