处理ViewChildren的最好的angular 7钩子是什么？

import { Component, ViewChildren, QueryList, AfterViewInit } from '@angular/core';

@Component({
  selector: 'app-example',
  template: `
    <div #item *ngFor="let item of items">{{ item }}</div>
  `
})
export class ExampleComponent implements AfterViewInit {
  @ViewChildren('item') items: QueryList<any>;

  itemsArray: any[] = [];

  ngAfterViewInit() {
    this.itemsArray = this.items.toArray();
    console.log(this.itemsArray);
  }
}

ngOnInit() {
  // 不要在这里查询ViewChildren
}

ngAfterViewInit() {
  this.itemsArray = this.items.toArray();
  console.log(this.itemsArray);
}

ngAfterViewInit() {
  this.items.changes.subscribe((items: QueryList<any>) => {
    this.itemsArray = items.toArray();
    console.log(this.itemsArray);
  });
}