Application not launching in UIWebView

I am developing my first Sencha Touch application. I started with the version 2 preview. My app.js script looks like this.

Code:

---

Ext.Loader.setConfig({ enabled: true });

alert('flag 1');


Ext.application({
    name: 'MyApp',
   
    launch: function() {
            alert('launch');
    }
});




alert('flag 2');

---

When accessing the app with Mobile Safari I get all three alerts. However, when accessing the app from a UIWebView embedded in a native application, only get two alerts. I do not get the alert in launch. It doesn't appear that the application object is getting created, or at least the launch function is getting called when the Sencha app is in a UIWebView.

Disable viewport auto maximizing feature, like this:

Code:

---

Ext.application({
    viewport: {
        autoMaximize: false
    },
  ...
});

---

Thanks, that fixed it.