HarmonyOS UIAbility 中初始化 dataPreferences from '@ohos.data.preferences'

async onWindowStageCreate(windowStage: window.WindowStage): Promise<void> { 
  // async onWindowStageCreate(windowStage: window.WindowStage): Promise<void> { 
  // Main window is created, set main page for this ability 
  hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onWindowStageCreate'); 
  const windowBarMag = new WindowBarManager(); 
  windowBarMag.immersiveWindow(windowStage, Const.TRANSPARENT_COLOR, true); 
 
  // 报错 await DataManager.getInstance().initStore("TeacherStore"); 
  windowStage.loadContent('pages/SplashPage', (err) => { 
  if (err.code) { 
  hilog.error(0x0000, 'testTag', 'Failed to load the content. Cause: %{public}s', JSON.stringify(err) ?? ''); 
  return; 
} 
hilog.info(0x0000, 'testTag', 'Succeeded in loading the content.'); 
}); 
//这里就正常 
await DataManager.getInstance().initStore("TeacherStore"); 
} 
 
dataPreferences from '@ohos.data.preferences'; 
initStore(storeName: string): Promise<void> { 
  this.storeName = storeName; 
  return dataPreferences.getPreferences(this.context, this.storeName) 
  .then((preferences: dataPreferences.Preferences) => { 
  this.preferencesSp = preferences; 
}); 
}