请确保您已在应用模块中导入 BrowserAnimationsModule，并将hammerjs 导入到主 ts 文件中.这是角度材料

Plase make sure you have imported BrowserAnimationsModule in your app module and hammerjs in to the main ts file. Here is the guide line for angular material

我的应用模块代码:

import { BrowserModule } from '@angular/platform-browser';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
import { MatTooltipModule, MatButtonModule, MatCheckboxModule, MatSelectModule } from 
'@angular/material';

@NgModule({
imports: [
    MatTooltipModule,
    MatButtonModule,
    MatCheckboxModule,
    MatSelectModule,
    BrowserAnimationsModule,
    BrowserModule
 ],
 providers: [],
 bootstrap: []
})
export class AppModule { }

主要ts代码:

import { enableProdMode } from '@angular/core';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';

import { AppModule } from './app/app.module';
import { environment } from './environments/environment';
import 'hammerjs';

if (environment.production) {
  enableProdMode();
}

platformBrowserDynamic().bootstrapModule(AppModule)
.catch(err => console.log(err));