Css 向下滑动动画角度4

我正在尝试设置页面动画，但出现以下问题：
我的页面上有content div，还有一个按钮可以在内容上方打开另一个div。我希望那个div淡入并滑入，div的吼声也能滑下/滑上。我为上面的div创建了我想要的动画，它在单击时打开，但不知道如何处理content div，下面是示例代码：

<div class="wrapper">
  <button (click)="animated = !animated"></button>
  <div *ngIf="animated" [@slideInOutAnimation] class="animated-div">
  THIS DIV IS ANIMATED</div>

  <div class="content">THIS IS CONTENT DIV</div>

</div>

TYPESCRIPT:
animations: [
trigger('slideInOutAnimation', [

  state('*', style({

  })),
  transition(':enter', [
    style({
      transform: 'translateY(-10%)',
      opacity: 0
    }),
    animate('.5s ease-in-out', style({
      transform: 'translateY(0)',
      opacity: 1
    }))
  ]),
  transition(':leave', [
    animate('.5s ease-in-out', style({
      transform: 'translateY(-10%)',
      opacity: 0
    }))
  ])
])
]

这个DIV是动画的
这里是内容部
打字稿：
动画：[
触发器（'slideInutanimation'[
状态（'*'，样式({
})),
转换（“：输入”[
风格({
转换：“translateY（-10%）”，
不透明度：0
}),
动画（'.5s缓进缓出'，风格({
转换：“translateY（0）”，
不透明度：1
}))
]),
过渡（“：离开”[
动画（'.5s缓进缓出'，风格({
转换：“translateY（-10%）”，
不透明度：0
}))
])
])
]

---

我是否应该创建一些其他触发器，将我的content div与动画一起移动？

首先，创建一个文件，在其中定义动画并导出它们。只是为了让你的app.component.ts更清楚

在下面的示例中，我使用了div的最大高度，从0px（隐藏时）到500px，但您可以根据需要进行更改

此动画使用状态（in和out），当我们单击按钮时，将切换状态，该按钮将运行动画

动画。ts

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

export const SlideInOutAnimation = [
    trigger('slideInOut', [
        state('in', style({
            'max-height': '500px', 'opacity': '1', 'visibility': 'visible'
        })),
        state('out', style({
            'max-height': '0px', 'opacity': '0', 'visibility': 'hidden'
        })),
        transition('in => out', [group([
            animate('400ms ease-in-out', style({
                'opacity': '0'
            })),
            animate('600ms ease-in-out', style({
                'max-height': '0px'
            })),
            animate('700ms ease-in-out', style({
                'visibility': 'hidden'
            }))
        ]
        )]),
        transition('out => in', [group([
            animate('1ms ease-in-out', style({
                'visibility': 'visible'
            })),
            animate('600ms ease-in-out', style({
                'max-height': '500px'
            })),
            animate('800ms ease-in-out', style({
                'opacity': '1'
            }))
        ]
        )])
    ]),
]

import { SlideInOutAnimation } from './animations';

@Component({
  ...
  animations: [SlideInOutAnimation]
})
export class AppComponent  {
  animationState = 'in';

  ...

  toggleShowDiv(divName: string) {
    if (divName === 'divA') {
      console.log(this.animationState);
      this.animationState = this.animationState === 'out' ? 'in' : 'out';
      console.log(this.animationState);
    }
  }
}

import { animate, style, transition, trigger } from '@angular/animations';
@Component({
  animations: [
    trigger('slideDownUp', [
      transition(':enter', [style({ height: 0 }), animate(500)]),
      transition(':leave', [animate(500, style({ height: 0 }))]),
    ]),
  ],
})

.box {
  overflow: hidden;
}

然后在app.component中，我们导入动画并创建将切换动画状态的方法

应用程序组件.ts

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

export const SlideInOutAnimation = [
    trigger('slideInOut', [
        state('in', style({
            'max-height': '500px', 'opacity': '1', 'visibility': 'visible'
        })),
        state('out', style({
            'max-height': '0px', 'opacity': '0', 'visibility': 'hidden'
        })),
        transition('in => out', [group([
            animate('400ms ease-in-out', style({
                'opacity': '0'
            })),
            animate('600ms ease-in-out', style({
                'max-height': '0px'
            })),
            animate('700ms ease-in-out', style({
                'visibility': 'hidden'
            }))
        ]
        )]),
        transition('out => in', [group([
            animate('1ms ease-in-out', style({
                'visibility': 'visible'
            })),
            animate('600ms ease-in-out', style({
                'max-height': '500px'
            })),
            animate('800ms ease-in-out', style({
                'opacity': '1'
            }))
        ]
        )])
    ]),
]

import { SlideInOutAnimation } from './animations';

@Component({
  ...
  animations: [SlideInOutAnimation]
})
export class AppComponent  {
  animationState = 'in';

  ...

  toggleShowDiv(divName: string) {
    if (divName === 'divA') {
      console.log(this.animationState);
      this.animationState = this.animationState === 'out' ? 'in' : 'out';
      console.log(this.animationState);
    }
  }
}

import { animate, style, transition, trigger } from '@angular/animations';
@Component({
  animations: [
    trigger('slideDownUp', [
      transition(':enter', [style({ height: 0 }), animate(500)]),
      transition(':leave', [animate(500, style({ height: 0 }))]),
    ]),
  ],
})

.box {
  overflow: hidden;
}

下面是您的app.component.html的外观：

<div class="wrapper">
  <button (click)="toggleShowDiv('divA')">TOGGLE DIV</button>
  <div [@slideInOut]="animationState" style="height: 100px; background-color: red;">
  THIS DIV IS ANIMATED</div>
  <div class="content">THIS IS CONTENT DIV</div>
</div>

---

在处理高度转换时，我比较喜欢使用通配符操作符，以允许动态高度内容

// Bind to true/false states via 0 and 1 values

trigger('slideUpDown', [
  state('0', style({ 'max-height': '*', opacity: 1 })),
  state('1', style({ 'max-height': '0px', opacity: 0 })),
  transition(':enter', animate('400ms ease-in-out')),
  transition('* => *', animate('400ms ease-in-out')),
])

用法：

<div #someDiv [@slideUpDown]="someDiv.state"></div>

您可以在其他地方或模板中切换状态

<button (click)="someDiv.state = !someDiv.state"></button>

---

这是在angular 2中实现向下滑动动画的一种简洁而简单的方法+

my component.ts

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

export const SlideInOutAnimation = [
    trigger('slideInOut', [
        state('in', style({
            'max-height': '500px', 'opacity': '1', 'visibility': 'visible'
        })),
        state('out', style({
            'max-height': '0px', 'opacity': '0', 'visibility': 'hidden'
        })),
        transition('in => out', [group([
            animate('400ms ease-in-out', style({
                'opacity': '0'
            })),
            animate('600ms ease-in-out', style({
                'max-height': '0px'
            })),
            animate('700ms ease-in-out', style({
                'visibility': 'hidden'
            }))
        ]
        )]),
        transition('out => in', [group([
            animate('1ms ease-in-out', style({
                'visibility': 'visible'
            })),
            animate('600ms ease-in-out', style({
                'max-height': '500px'
            })),
            animate('800ms ease-in-out', style({
                'opacity': '1'
            }))
        ]
        )])
    ]),
]

import { SlideInOutAnimation } from './animations';

@Component({
  ...
  animations: [SlideInOutAnimation]
})
export class AppComponent  {
  animationState = 'in';

  ...

  toggleShowDiv(divName: string) {
    if (divName === 'divA') {
      console.log(this.animationState);
      this.animationState = this.animationState === 'out' ? 'in' : 'out';
      console.log(this.animationState);
    }
  }
}

import { animate, style, transition, trigger } from '@angular/animations';
@Component({
  animations: [
    trigger('slideDownUp', [
      transition(':enter', [style({ height: 0 }), animate(500)]),
      transition(':leave', [animate(500, style({ height: 0 }))]),
    ]),
  ],
})

.box {
  overflow: hidden;
}

my component.html

<div @slideDownUp *ngIf="isShowing" class="box">
  I am the content of the div!
</div>

---

请参阅其他解决方案哇，这真的有助于通过我们的网站共享一个通用的动画库。谢谢你。我们最终制作了这些工厂函数，这样我们就可以对每个动画进行稍微不同的配置。是的，实际上工厂函数使其可重用。你能告诉我你在谈论哪个图书馆吗？很好的解决方案。谢谢