What's the trick to do a "slide" transition on an Android device? What's happening is that when I click on an item from a list it is supposed to bring up the details, but what happens is that it does the transition but the contents from the first screen stay there on top of the details card. On iPhone and Chrome it works fine.

Here's what I'm trying to do to hide (similar to geocongress):

Code:
mobioasis.defaultAnim = Ext.platform.isAndroidOS ? false : 'slide';
mobioasis.App = Ext.extend(Ext.Panel, {
    cls: 'app',
    fullscreen: true,
    layout: 'card',
    activeItem: 0,    
    initComponent: function() {        
        this.startScreen = new mobioasis.StartScreen({
            flex: 1
        });
        this.splash = new Ext.Container({
            cls: 'splash',
            layout: {
                type: 'vbox',
                align: 'stretch',
                pack: 'end'
            },
            listeners: {
                deactivate: this.onSplashDeactivate,
                scope: this
            },
            items: [this.startScreen]
        });
        this.detail = new mobioasis.DieInfo();
        
        this.items = [this.splash, this.detail];
        mobioasis.App.superclass.initComponent.call(this);
        
        this.startScreen.on('dieselect', this.onDieSelect, this);
    },
    
    afterRender: function() {
        mobioasis.App.superclass.afterRender.apply(this, arguments);
        Ext.getBody().on(Ext.isChrome ? 'click' : 'tap', this.onLinkTap, this, {delegate: 'a.goOutside'});
    },
    
    onLinkTap: function(e, t) {        
        e.stopEvent();
        mobioasis.Util.openUrl(t.href);
    },
    
    
    onSplashDeactivate: function() {
        this.startScreen.list.clearSelections();
    },
    
    onDieSelect: function(dieId) {
        this.setCard(this.detail, mobioasis.defaultAnim);
        this.detail.update(dieId);
    }
});
One line I'm not entirely sure what it's doing is this one (what's the delegate: a.goOutside for):

Code:
        Ext.getBody().on(Ext.isChrome ? 'click' : 'tap', this.onLinkTap, this, {delegate: 'a.goOutside'});
TIA!