对于Angular 7，应该这样写:

this.router.events。订阅((事件:事件)=> {})

具体示例如下:

import { Component } from '@angular/core'; 
import { Router, Event, NavigationStart, NavigationEnd, NavigationError } from '@angular/router';

@Component({
    selector: 'app-root',
    template: `<router-outlet></router-outlet>`
})
export class AppComponent {

    constructor(private router: Router) {

        this.router.events.subscribe((event: Event) => {
            if (event instanceof NavigationStart) {
                // Show loading indicator
            }

            if (event instanceof NavigationEnd) {
                // Hide loading indicator
            }

            if (event instanceof NavigationError) {
                // Hide loading indicator

                // Present error to user
                console.log(event.error);
            }
        });

   }
}

以上大多数解决方案是正确的，但我面临的问题是这个发射多次'导航发射'事件。当我改变任何路由时，此事件被触发。所以hear是Angular 6的完整解决方案。

import { Subscription } from 'rxjs/Subscription';
import 'rxjs/add/operator/do';
import 'rxjs/add/operator/filter';    

export class FooComponent implements OnInit, OnDestroy {
   private _routerSub = Subscription.EMPTY;
   constructor(private router: Router){}

   ngOnInit(){
     this._routerSub = this.router.events
      .filter(event => event instanceof NavigationEnd)
      .subscribe((value) => {
         //do something with the value
     });
  }

  ngOnDestroy(){
   this._routerSub.unsubscribe();
  }
} 

在Angular 10中，你可以像下面这样做……

    import { Component, OnInit } from '@angular/core';
    import { Router, NavigationEnd } from '@angular/router';
    import { filter } from 'rxjs/operators';
    
    @Component({
      selector: 'app-my-class',
      templateUrl: './my-class.component.html',
      styleUrls: ['./my-class.component.scss']
    })
    export class MyClassComponent implements OnInit {
      constructor(private router: Router) {}
    
      ngOnInit(): void {
        this.router.events
        .pipe(filter(event => event instanceof NavigationEnd))  
        .subscribe((event: NavigationEnd) => {
          // code goes here...
        });
      }
    }

RxJS 6

router.events.pipe(filter(event => event instanceof NavigationStart))

感谢Peilonrayz(见下面的评论)

new router >= RC.3

import { Router, NavigationStart, NavigationEnd, NavigationError, NavigationCancel, RoutesRecognized } from '@angular/router';

constructor(router:Router) {
  router.events.forEach((event) => {
    if(event instanceof NavigationStart) {
    }
    // NavigationEnd
    // NavigationCancel
    // NavigationError
    // RoutesRecognized
  });
}

你也可以通过给定的事件进行过滤:

import 'rxjs/add/operator/filter';

constructor(router:Router) {
  router.events
    .filter(event => event instanceof NavigationStart)
    .subscribe((event:NavigationStart) => {
      // You only receive NavigationStart events
    });
}

使用成对操作符来获取先前和当前事件也是一个不错的想法。https://github.com/angular/angular/issues/11268#issuecomment-244601977

进口的rxjs /添加/运营商/成对的; import {Router} from '@angular/ Router '; 导出类AppComponent { 构造函数(私有路由器:router) { This.router.events.pairwise ().subscribe((event) => { console.log(事件); })； }; ｝

可以使用以下方法检测路由变化:

import {Router, ActivatedRoute} from '@angular/ Router '; 构造函数(私有路由:ActivatedRoute) {} This.router.events.subscribe ((event) => { 如果(事件){ / /做某事 ｝ })；

在angular 6和RxJS6中:

import { filter, debounceTime } from 'rxjs/operators';

 this.router.events.pipe(
      filter((event) => event instanceof NavigationEnd),
      debounceTime(40000)
    ).subscribe(
      x => {
      console.log('val',x);
      this.router.navigate(['/']); /*Redirect to Home*/
}
)