【发布时间】:2019-05-20 08:10:30
【问题描述】:
我正在尝试使用 Angular Material (7.0) 选择列表 as described here。
页面上的示例代码sn-p是
<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 typesOfShoes,如他们的 sn-p 中所述:
export class HomeComponent implements OnInit {
typesOfShoes: string[] = ['Boots', 'Clogs', 'Loafers', 'Moccasins', 'Sneakers'];
constructor() {}
ngOnInit() {}
}
对我来说很有意义,但是当我尝试编译时,我得到 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.
我已将 MatListModule 导入我的应用程序模块。
我没有看到与要导入的列表选项相关的其他模块。
我在这里错过了什么?
【问题讨论】: