我需要访问CustomRouteReuseStrategy中的数据，由于循环依赖，我不能在那里注入路由器，但你也可以使用Location对象来读取状态。

Send:

    this.router.navigate(['action-selection'], { state: { example: 'bar' } });

Receive:
    import { Location } from '@angular/common';

    constructor(private location: Location) {
      console.log(this.location.getState().example); // should log out 'bar'
    }

Angular 7.2.0带来了一个新方法

https://angular.io/api/router/NavigationExtras#state

发送:

    this.router.navigate(['action-selection'], { state: { example: 'bar' } });

收到:

    constructor(private router: Router) {
      console.log(this.router.getCurrentNavigation().extras.state.example); // should log out 'bar'
    }

你可以在这里找到一些额外的信息:

https://github.com/angular/angular/pull/27198

上面的链接包含了一个有用的例子: https://stackblitz.com/edit/angular-bupuzn

最新版本的angular(7.2 +)现在有了使用NavigationExtras传递额外信息的选项。

家组件

import {
  Router,
  NavigationExtras
} from '@angular/router';
const navigationExtras: NavigationExtras = {
  state: {
    transd: 'TRANS001',
    workQueue: false,
    services: 10,
    code: '003'
  }
};
this.router.navigate(['newComponent'], navigationExtras);

newComponent

test: string;
constructor(private router: Router) {
  const navigation = this.router.getCurrentNavigation();
  const state = navigation.extras.state as {
    transId: string,
    workQueue: boolean,
    services: number,
    code: string
  };
  this.test = "Transaction Key:" + state.transId + "<br /> Configured:" + state.workQueue + "<br /> Services:" + state.services + "<br /> Code: " + state.code;
}

输出

希望这能有所帮助!

从Angular 15开始，this.router.getCurrentNavigation()可能会返回null，因为该组件是在导航之后实例化的。

另一种方法是从Location (@angular/common)中访问状态

  import { Location } from '@angular/common';

  constructor(private location: Location) {
    location.getState() // do what you want 
  }

getStateById (stateId) { 返回this.http.get(环境。user_service_url + "/getStateById"， {params:{"stateId": stateId}}); ｝

我在网上找到的最好的是ngx-navigation-with-data。 它非常简单，非常适合将数据从一个组件导航到另一个组件。 您只需导入组件类，并以非常简单的方式使用它。 假设您有home和about组件，然后想要发送数据

家组件

import { Component, OnInit } from '@angular/core';
import { NgxNavigationWithDataComponent } from 'ngx-navigation-with-data';

@Component({
 selector: 'app-home',
 templateUrl: './home.component.html',
 styleUrls: ['./home.component.css']
})
export class HomeComponent implements OnInit {

constructor(public navCtrl: NgxNavigationWithDataComponent) { }

 ngOnInit() {
 }

 navigateToABout() {
  this.navCtrl.navigate('about', {name:"virendta"});
 }

}

关于组件

import { Component, OnInit } from '@angular/core';
import { NgxNavigationWithDataComponent } from 'ngx-navigation-with-data';

@Component({
 selector: 'app-about',
 templateUrl: './about.component.html',
 styleUrls: ['./about.component.css']
})
export class AboutComponent implements OnInit {

 constructor(public navCtrl: NgxNavigationWithDataComponent) {
  console.log(this.navCtrl.get('name')); // it will console Virendra
  console.log(this.navCtrl.data); // it will console whole data object here
 }

 ngOnInit() {
 }

}

如需查询，请关注https://www.npmjs.com/package/ngx-navigation-with-data

请在下方评论寻求帮助。