angular – 返回布尔值而不是订阅canActivate

我有一个受canActivate防护保护的组件. checkLogin函数中的Authguard从一个observable订阅,但我不知道如何从它返回一个布尔值到canActivate.

guard.service.ts

canActivate(route: ActivatedRouteSnapshot,state: RouterStateSnapshot): Boolean {
    let url: String = state.url;

    return this.checkLogin(url);
  }

    public checkservice:Boolean;
  checkLogin(url: String):Boolean {

         return this.loadAppSetTings().subscribe(res=>{
              console.log(this.checkservicE);
              if (this.checkservice == truE) 
              {
                   return true; 
            }
            else{
                this.router.navigate(['/error-user']);
                return false;
            }
            });
      }//checkLogin throws error as type subscription is not assignable to type Boolean

所以我想要的是如果this.checkservice为true,它应该返回true并且用户应该能够登陆被保护的路由但是如果它是假的,他应该被导航到错误用户.

Angular2 – return boolean with subscribe to canActivate这个问题与我的相似,但无法@L_801_10@我的问题.

有人可以@L_944_11@帮忙.

canActivate(route: ActivatedRouteSnapshot,state: RouterStateSnapshot): Observable<Boolean> {
    let url: String = state.url;

    return this.checkLogin(url);
}

public checkservice:Boolean;
checkLogin(url: String):Observable<Boolean> {
     return this.loadAppSetTings().map(res=>{
          console.log(this.checkservicE);
          if (this.checkservice == truE) 
          {
               return true; 
        }
        else{
            this.router.navigate(['/error-user']);
            return false;
        }
    });
  }