HarmonyOS 鸿蒙Next应用屏幕翻转自适应问题

1.module.json5的abilities中的orientation不设置为auto_rotation（设置为你需要的常规翻转方向或者默认unspecified都可以）

2.在onWindowStageCreate中获取并保存window实例（window Class）

    let windowClass: window.Window | undefined = undefined;
    windowStage.getMainWindow((err: BusinessError, data) => {
      const errCode: number = err.code;
      if (errCode) {
        console.error(`Failed to obtain the main window. Cause code: ${err.code}, message: ${err.message}`);
        return;
      }
      windowClass = data;
      AppStorage.setOrCreate('windowClass', data);
    });

3.在需要翻转自适应的生命周期函数中设置显示方向属性

function setPageOrientation(orientation: window.Orientation) {
  let windowClass: window.Window | undefined = AppStorage.get('windowClass');
  try {
    windowClass?.setPreferredOrientation(orientation, (err: BusinessError) => {
      const errCode: number = err.code;
      if (errCode) {
        console.error(`Failed to set window orientation. Cause code: ${err.code}, message: ${err.message}`);
        return;
      }
      console.info('Succeeded in setting window orientation.');
    });
  } catch (exception) {
    console.error(`Failed to set window orientation. Cause code: ${exception.code}, message: ${exception.message}`);
  }
}

aboutToAppear() {
  setPageOrientation(window.Orientation.AUTO_ROTATION)
}
aboutToDisappear() {
setPageOrientation(window.Orientation.UNSPECIFIED)
}