angular4 如何在全局设置路由跳转动画的方法

import { BrowserAnimationsModule } from '@angular/platform-browser/animations';

@NgModule({
 imports: [
  BrowserAnimationsModule

import { AnimationEntryMetadata, state } from '@angular/core';
import { trigger, transition, animate, style, query, group } from '\@angular/animations';

export const routeAnimation: AnimationEntryMetadata =
 trigger('routeAnimation', [
  transition(':enter', [
   style({
    position: 'absolute'
   }),
   animate('0.5s ease-in-out')
  ]),
  transition('* => *', [
   query(':leave', style({ transform: 'translateX(0)', position: 'absolute'}), { optional: true }),
   query(':enter', style({ transform: 'translateX(100%)', position: 'absolute'}), { optional: true }),

   group([
    query(':leave', animate('.5s ease-in-out', style({transform: 'translateX(-100%)'})), { optional: true }),
    query(':enter', animate('.5s ease-in-out', style({transform: 'translateX(0)'})), { optional: true })
   ])
  ])
 ]);

import { Router, NavigationEnd } from '@angular/router';
import { routeAnimation } from './animations';

@Component({
 selector: 'app-root',
 templateUrl: './app.component.html',
 styleUrls: ['./app.component.less'],
 animations: [routeAnimation]
})
// router跳转动画所需参数
 routerState: boolean = true;
 routerStateCode: string = 'active';

this.router.events.subscribe(event => {
   if (event instanceof NavigationEnd) {
    // 每次路由跳转改变状态
   this.routerState = !this.routerState;
   this.routerStateCode = this.routerState "htmlcode">

<div id="app" [@routeAnimation]="routerStateCode">
 <router-outlet></router-outlet>
</div>


现在全局路由跳转都有动画了，不用一个一个组件导入animations。


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