There are so many custom components for sencha touch.
If you want to use those awsome custom components in your app, you should add some configations in app.js and .sencha when developing or build apps.
At first, You download costom component and add ux folder you downloaded to application folder.
When you develop app by using custom components, you should add configation in app.js.
Ext.ux.touch : ‘./ux/touch’
This is adding Ext.ux.touch class path.
When you build your app use Ext.ux.touch custom components, you add following configation in .sencha/app/sencha.cfg. This is adding Ext.ux.touch class path to build tool
If you don’t add this configation, the following error is occured.