我不能像文档中描述的那样注入MatDialogRef:https://material.angular.io/components/dialog/overview
当我试图这样做时,我有错误:
错误错误:StaticInjectorError [MatDialogRef]:StaticInjectorError [MatDialogRef]:NullInjectorError:没有MatDialogRef的提供程序!
app.module.ts
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { FormsModule } from '@angular/forms';
import {
MatInputModule,
MatDialogModule,
MatProgressSpinnerModule,
MatButtonModule,
MatDialog,
MatDialogRef
} from '@angular/material';
import { ApiModule } from '../api/api.module';
import { RoutingModule } from '../routing/routing.module';
import { RegistrationComponent } from './components/registration.component';
import { LoginComponent } from './components/login.component';
import { AccountService } from './services/account.service';
@NgModule({
imports: [
BrowserModule,
MatInputModule,
MatDialogModule,
MatProgressSpinnerModule,
MatButtonModule,
FormsModule,
RoutingModule,
ApiModule
],
declarations: [
RegistrationComponent,
LoginComponent
],
entryComponents: [
LoginComponent,
RegistrationComponent
],
providers: [
AccountService,
MatDialog,
MatDialogRef
]
})
export class AccountModule {}
home.component.ts
import { Component } from '@angular/core';
import { MatDialog } from '@angular/material';
import { RegistrationComponent } from '../account/components/registration.component';
@Component({
moduleId: module.id.replace('compiled', 'app'),
templateUrl: 'home.component.html'
})
export class HomeComponent
{
constructor(private modalService: MatDialog) {}
public openModal() : void
{
let dialog = this.modalService.open(RegistrationComponent, {});
}
}
registration.component.ts
import { Component } from '@angular/core';
import { Router } from '@angular/router';
import { MatDialogRef } from '@angular/material/dialog';
import { User } from '../../../models/domain/User';
import { ApiUserService } from '../../api/entity-services/user.service';
import { AuthService } from '../../auth/auth.service';
import { AccountService } from '../services/account.service'
@Component({
selector: 'registration-component',
templateUrl: 'app/modules/account/templates/registration.component.html'
})
export class RegistrationComponent
{
public user :User = new User();
public errorMessage :string;
public isLoading :boolean;
constructor
(
private userService :ApiUserService,
private authService :AuthService,
private accountService :AccountService,
private router :Router,
public dialogRef :MatDialogRef<RegistrationComponent>
)
{
this.isLoading = false;
}
public onSubmit(e) :void
{
e.preventDefault();
this.isLoading = true;
this.userService
.Create(this.user)
.subscribe(
user =>
{
this.user.id = user.id;
this.user.login = user.login;
this.authService
.Login(this.user)
.subscribe(
token =>
{
this.accountService.Load()
.subscribe(
account =>
{
this.user = account;
this.isLoading = false;
this.dialogRef.close();
let redirectRoute = account.activeScopeId
? `/scope/${account.activeScopeId}`
: '/scope-list/';
this.router.navigate([redirectRoute]);
},
error => this.errorMessage = <any>error
);
},
error => this.errorMessage = <any>error
);
},
error => this.errorMessage = <any>error
);
}
}
感谢@Edric,我通过从MatDialogModule
而不是MatDialog
导入MatDialogRef
,@angular/material/dialog
和@angular/material
解决了这个问题。
将对话框添加到要在许多组件中共享的服务时出现此错误。只是为了澄清,在将对话框移动到服务之前,应用程序中不存在错误。解决方案是在主模块中包含自定义提供程序MatDialogRef
import {DialogService} from './services/dialog.service';
import {MatDialogModule, MatDialogRef} from '@angular/material/dialog';
...
imports: [
...
MatDialogModule
],
providers: [
DialogService, {provide: MatDialogRef, useValue: {}},
],
...
使用此提供程序,该服务作为单例使用,我的对话框将被共享,提供程序错误消失了。
这可能是由于您不包含Angular动画所需的Web Animations API polyfill,因为它依赖于API。
这是针对本机支持它的浏览器的caniuse。目前只有Chrome,Firefox和Opera支持Web动画API。
无论如何,您必须按照以下步骤进行填充:
npm install web-animations-js
polyfills.ts
中Angular Animations的行(如果不存在则添加它):
import 'web-animations-js'; // Uncomment this line
或者,您可以尝试从单独的端点导入模块,如下所示:
从:
import { MatButtonModule, MatDialogModule } from '@angular/material';
至:
import { MatButtonModule } from '@angular/material/button';
import { MatDialogModule } from '@angular/material/dialog';
import {MAT_DIALOG_DATA, MatDialog, MatDialogRef} from '@angular/material';