角材料:选择列表示例不起作用

时间:2018-12-19 19:23:43

标签: angular angular-material2

我正在尝试使用角材料(7.0)选择列表as described here

页面上的示例代码段为

  <mat-selection-list #shoes>
    <mat-list-option *ngFor="let shoe of typesOfShoes">
      {{shoe}}
    </mat-list-option>
  </mat-selection-list>

  <p>
    Options selected: {{shoes.selectedOptions.selected.length}}
  </p>

在TS文件中定义了typesOfShoes,如其代码段所述:

export class HomeComponent implements OnInit {
  typesOfShoes: string[] = ['Boots', 'Clogs', 'Loafers', 'Moccasins', 'Sneakers'];
  constructor() {}
  ngOnInit() {}
}

对我来说很有道理,但是当我尝试编译时,出现了错误

ERROR in: Can't bind to 'ngForOf' since it isn't a known property of 'mat-list-option'.
1. If 'mat-list-option' is an Angular component and it has 'ngForOf' input,
 then verify that it is part of this module.
2. If 'mat-list-option' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA'
 to the '@NgModule.schemas' of this component to suppress this message.
etc.

我已经将MatListModule导入了我的应用模块。

我没有其他与要导入的列表选项相关的模块。

我在这里想念什么?

1 个答案:

答案 0 :(得分:0)

BrowserModule中导入CommonModule(如果是子模块,则导入@NgModule()

import {BrowserModule} from '@angular/common';

@NgModule({
  imports: [BrowserModule],
})