thanks for your reply.
Now it working i have made some modification in the separated touchstyle folder. 1). i have paste the folder sdk inside the touchstyle folder. 2). open the index.html file and make changeto3). open app.json file and make change from "path": "../../sencha-touch-debug.js" to "path": "sdk/sencha-touch-debug.js"4). open app.js file and make change from 'Ext': '../../src' to 'Ext': 'sdk/src'and finally 5). copy the sencha-touch-debug.js file from sencha touch and paste it in the sdk folder.open the browser it is working now.
but i am confused that every person have its own method to develop a project.