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);
            }
        });

   }
}

简单的答案 角8。*

constructor(private route:ActivatedRoute) {
  console.log(route);
}

以以下方式捕获路由更改事件…

import { Component, OnInit, Output, ViewChild } from "@angular/core";
import { Router, NavigationStart, NavigationEnd, Event as NavigationEvent } from '@angular/router';

@Component({
    selector: "my-app",
    templateUrl: "app/app.component.html",
    styleUrls: ["app/app.component.css"]
})
export class AppComponent {

    constructor(private cacheComponentObj: CacheComponent,
        private router: Router) {

        /*  Route event types
            NavigationEnd
            NavigationCancel
            NavigationError
            RoutesRecognized
        */
        router.events.forEach((event: NavigationEvent) => {

            //Before Navigation
            if (event instanceof NavigationStart) {
                switch (event.url) {
                case "/app/home":
                {
                    //Do Work
                    break;
                }
                case "/app/About":
                {
                    //Do Work
                    break;
                }
                }
            }

            //After Navigation
            if (event instanceof NavigationEnd) {
                switch (event.url) {
                case "/app/home":
                {
                    //Do Work
                    break;
                }
                case "/app/About":
                {
                    //Do Work
                    break;
                }
                }
            }
        });
    }
}

这里的答案是正确的路由器弃用。对于最新版本的路由器:

this.router.changes.forEach(() => {
    // Do whatever in here
});

or

this.router.changes.subscribe(() => {
     // Do whatever in here
});

要了解两者之间的区别，请查看这个SO问题。

Edit

对于最新的您必须做:

this.router.events.subscribe(event: Event => {
    // Handle route change
});

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);
            }
        });

   }
}

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 ｝ })；