小编lea*_*ird的帖子

我是 angular 7 的新手，现在正在尝试实现 CanActive，但我收到错误：

谁能指导我克服这个问题。我的代码示例如下：

auth.guard.ts ：

import { Injectable } from '@angular/core';
import { CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot } from '@angular/router';
import { Observable } from 'rxjs';
import { AuthService } from './auth-service.service';
import {Router} from '@angular/router';

@Injectable({
  providedIn: 'root'
})
export class AuthGuard implements CanActivate {
  constructor(private auth: AuthService,
              private myRoute: Router){
  }

  canActivate(
    next: ActivatedRouteSnapshot,
    state: RouterStateSnapshot): Observable<boolean> | Promise<boolean> | boolean {
    if (this.auth.isLoggednIn()){
      return true;
    } else {
      this.myRoute.navigate(["login"]);
      return false;
    }
  }
}