angular - MatDialog 显示不正确

Question

我正在尝试使用 MatDialog 并基于 this example我已经按如下方式实现了该对话框:

import {Component, Inject, OnInit} from '@angular/core';
import {Router} from '@angular/router';
import {AuthenticationService} from '../../../service/authentication.service';
import {MAT_DIALOG_DATA, MatDialog, MatDialogRef} from '@angular/material';

@Component({
  selector: 'app-home',
  templateUrl: './home.component.html',
  styleUrls: ['./home.component.css']
})
export class HomeComponent {

  constructor(private router: Router, public dialog: MatDialog) { }

  openDialog(): void {
    const dialogRef = this.dialog.open(CreateGroupDialogComponent);
  }    
}

@Component({
  selector: 'app-create-group-dialog',
  template: `
    <span>Hello World!</span>
  `
})
export class CreateGroupDialogComponent {
  constructor(public dialogRef: MatDialogRef<CreateGroupDialogComponent>) {  }
}

但是，即使在我按下相应按钮时出现对话框，我得到的结果是:

HTML 模板未显示，模态框的尺寸错误。

我不明白问题是什么。为什么模态没有正确绘制？

这是打开模式时生成的 HTML 代码。可以看出它是空的。

Answer 1

你需要将它添加到 @NgModule 上的 entryComponents

import { BrowserModule } from '@angular/platform-browser';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
import { NgModule } from '@angular/core';
import { MatDialogModule, MatButtonModule } from '@angular/material';

import { AppRoutingModule } from './app-routing.module';

import { AppComponent } from './app.component';
import { LoginComponent } from './login/login.component';
import { HomeComponent, DialogOverviewExampleDialogComponent } from './home/home.component';


@NgModule({
  declarations: [
    AppComponent,
    LoginComponent,
    HomeComponent,
    DialogOverviewExampleDialogComponent
  ],
  imports: [
    BrowserModule,
    BrowserAnimationsModule,
    AppRoutingModule,
    MatDialogModule,
    MatButtonModule
  ],
  providers: [],
  bootstrap: [AppComponent],
  entryComponents: [
    DialogOverviewExampleDialogComponent
  ]
})
export class AppModule { }

复制 Angular2 material dialog has issues - Did you add it to @NgModule.entryComponents?