角度4中的动画路线 [英] Animating routes in angular 4

问题描述

我正在尝试在角度4中设置路径过渡的动画，该动画在首次加载页面时起作用，并且在页面刷新时起作用，所以我知道该动画起作用，但是当我切换路径时却不起作用.我想念什么?

I'm trying to animate route transitions in angular 4, the animation works when the page first loads, and on page refreshes, so I know the animation works, however not when I switch routes. what am I missing?

这是代码...

//组件元数据

animations: [fadeInAnimation]

//tempalte

// tempalte

<div class="route-container" [@fadeInAnimation]>
    <router-outlet></router-outlet>
</div>

//样式

.route-container {
  position:relative;
}
.route-container>* {
  display:block;
}

//动画

trigger('fadeInAnimation', [

    // route 'enter' transition
    transition(':enter', [

        // css styles at start of transition
        style({ opacity: 0 }),

        // animation and styles at end of transition
        animate('6s cubic-bezier(.35,0,.25,1)', style({ opacity: 1 }))
    ]),
]);

推荐答案

为了确保每条路径上的路由动画proc，您需要定义每条路径之间的过渡.以下是在"home"路线和"acct"路线之间转换时用来创建抽屉效果的示例:

In order to make sure routing animation proc on each route you will need to define transitions between each route. The following is an example that I use to create a drawer effect when transitioning between my 'home' route and my 'acct' route:

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

export const baseAnimation =
    trigger('baseAnimation', [
      transition('acct => home', [
        query(':enter, :leave', style({ position: 'absolute', top: 0, left: 0, right: 0 })),
        query(':leave', style({ height: '*'})),
        query('.acct', [
            animate('300ms',
            style({ height: 0 }))
        ])
      ]),
      transition('home => acct', [
        query(':enter, :leave',
          style({ position: 'absolute', top: 0, left: 0, right: 0 })),
        query(':enter .acct', [
          style({ height: 0 }),
          animate('300ms', style({ height: '*' }))
        ])
      ])
    ])

请注意， .acct 是指帐户页面路由的类标签，对于您的应用程序可能不是必需的(或可能需要进行相应更改).通过这种方式，您可以在路线更改时为每个路线的子元素设置动画.

Note that .acct refers to a class label for the account page route, and may not be necessary for your application (or may need to be changed accordingly). In this manner you can animate sub-elements of each route on route changes.

我在 app.component.html 中使用一个函数来处理路线动画:

I use a function in my app.component.html to process route animations:

<div [@baseAnimation]="prepareRouteTransition(outlet)">
  <router-outlet #outlet="outlet"></router-outlet>
</div>
</div>

app.component.ts 应该加载动画并声明路线的动画:

And the app.component.ts should load the animations and declare animations for the route:

import { Component } from '@angular/core';
import { Router } from '@angular/router';
import { baseAnimation } from './anim/base.animation';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss'],
  animations: [ baseAnimation ]
})

export class AppComponent {

  constructor() { }

  prepareRouteTransition(outlet) {
    const animation = outlet.activatedRouteData['animation'] || {};
    return animation['value'] || null;
  }
}

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