title: Why is @ViewChildren zero-length?
body: <p>I <a href="https://github.com/NativeScript/nativescript-angular/issues/1120" rel="nofollow noreferrer">follow</a> <a href="https://discourse.nativescript.org/t/setting-viewchild-dynamically/403" rel="nofollow noreferrer">these</a> to implement <a href="https://angular.io/api/core/ViewChildren" rel="nofollow noreferrer">ViewChildren</a>, but am unable to get the children.  Why?</p>
  
  <pre><code>@ViewChildren(TextField) inputs: QueryList&lt;TextField&gt;;
  
  ngAfterViewInit(): void {
      console.log('this.inputs.length = ', this.inputs.length);
      // the length is 0
  }
  </code></pre>
  
  <h2><a href="https://play.nativescript.org/?template=play-ng&amp;id=my8OCy&amp;v=8" rel="nofollow noreferrer">DEMO</a></h2>