使用bundleManager.getBundleInfoForSelf方法获取app和module信息时，字符串资源变量未解析

let appName = this.context.resourceManager.getStringSync($r('app.string.app_name').id);

let aa= getContext(this).resourceManager.getStringSync($r('app.string.app_name').id).toString() 
console.info('aa:'+aa) 
AppScope下配置文件：{ 
  "string": [ 
  { 
    "name": "app_name", 
  "value": "SubWindowApplication" 
  } 
  ] 
}