title: Ionic 2: Dismiss loading animation when iframe is ready
body: <p>I have to include a external webpage in my app, so I use an iframe for this.
  Now I want to show an loading animation, while the iframe is loading. That works fine, but I don't know, how to dismiss the animation, when the iframe is ready.
  I can't edit the code of the page in the iframe.</p>
  
  <p>That's my code on the TypeScript-File:</p>
  
  <pre><code>ngOnInit() {
      this.presentLoading();
  }
  
  presentLoading() {
      let loading = this.loadingCtrl.create({
          content: 'Please wait...'
      });
  
      loading.present();
  }
  </code></pre>
  
  <p>and the HTML file</p>
  
  <pre><code>&lt;ion-content&gt;
      &lt;iframe name="chatFrame" src="http://..."&gt;&lt;/iframe&gt;
  &lt;/ion-content&gt;
  </code></pre>