NullInjectorError：Angular 6中没有AnimationBuilder的提供程序

Question

您好，我使用Angular 6以及材料设计

我已经包括了材料和动画的所有依赖关系

在编译时没有给出错误，但是在浏览器渲染时出现了以下错误

我已经导入了所有必需的依赖项

import { animate, AnimationBuilder, AnimationPlayer, style } from '@angular/animations';

AppComponent.html:40 ERROR Error: taticInjectorError(AppBrowserModule)[FuseSidebarComponent -> AnimationBuilder]: 
 StaticInjectorError(Platform: core)[FuseSidebarComponent -> AnimationBuilder]: 
NullInjectorError: No provider for AnimationBuilder!
at NullInjector.push../node_modules/@angular/core/fesm5/core.js.NullInjector.get (core.js:1034)
at resolveToken (core.js:1271)
at tryResolveToken (core.js:1216)
at StaticInjector.push../node_modules/@angular/core/fesm5/core.js.StaticInjector.get (core.js:1113)
at resolveToken (core.js:1271)
at tryResolveToken (core.js:1216)
at StaticInjector.push../node_modules/@angular/core/fesm5/core.js.StaticInjector.get (core.js:1113)
at resolveNgModuleDep (core.js:8161)
at NgModuleRef_.push../node_modules/@angular/core/fesm5/core.js.NgModuleRef_.get (core.js:8849)
at resolveDep (core.js:9214)



import { animate, AnimationBuilder, AnimationPlayer, style } from '@angular/animations';
import { DOCUMENT } from '@angular/common';
@Injectable({
providedIn: 'root'
})
export class SampleClass
{
player: AnimationPlayer;

constructor(
    private _animationBuilder: AnimationBuilder,
    @Inject(DOCUMENT) private _document: any,
)
{
    this._init();
}

private _init(): void
{

    this.testScreen = this._document.body.querySelector('#test-screen');


    if ( this.testScreen )
    {
        this.player =
        this._animationBuilder
            .build([
                style({
                    opacity: '0',
                    zIndex : '99999'
                }),
                animate('400ms ease', style({opacity: '1'}))
            ]).create(this.testScreen);

        setTimeout(() => {
            this.player.play();
        }, 0);
    }
} 
}

Answer 1

编辑：

BROWSER_ANIMATIONS_PROVIDERS是在BrowserAnimationsModule中提供的，因此您应该BrowserAnimationsModule在模块中导入。这使您可以AnimationBuilder在组件中使用。

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

@NgModule({
  imports: [
    BrowserAnimationsModule
  ]
})