如何在输入Angular2表单上设置焦点

<input type="text" #inputElement>

import { Component, ViewChild, ElementRef } from '@angular/core';

@Component({
  selector: 'app-example',
  templateUrl: './example.component.html',
  styleUrls: ['./example.component.css']
})
export class ExampleComponent {
  @ViewChild('inputElement') inputElement: ElementRef;

  // 其他组件代码...
}

ngAfterViewInit() {
  this.inputElement.nativeElement.focus();
}