使用Material Design Lite的Angular2 ngFor元素

编辑如果你想要一个声明性的解决方案this approach here看起来像一个非常好的,但我自己没有使用它.

我创建了一个包装Material Lite componentHandler的服务

import { Injectable } from '@angular/core';

export interface ComponentHandler {
    upgradeDom();

}

declare var componentHandler: ComponentHandler;


@Injectable()
export class MaterialService {
    handler: ComponentHandler;
    constructor() {
        this.handler = componentHandler;
    }

    // render on next tick
    render() {
        setTimeout(() => { this.handler.upgradeDom(); },0);
    }

}

然后在组件将元素注入DOM后调用服务的render函数.在你的情况下,这是在* ngFor之后

这是一个非常人为的例子,但演示了“where”来调用render

import { Component,OnInit } from '@angular/core';
import { DataService } from 'services/data.service';
import { MaterialService } from 'services/material.service';

@Component({
    selector: 'app-thing',templateUrl: `
       <ul>
            <li *ngFor="let item of data">
              {{data}}
            </li>
       </ul>
    `
})
export class ThingComponent implements OnInit {
    data: string[]
    constructor(
        private service: DataService,private material: MaterialService
    ) { }

    ngOnInit() {
        this.service.getData()
        .subscribe(data => {
            this.data = data;
            this.material.render();
        });
     }
}