UIKit and Cocos2d in one application

i've a huge problem.. I want to 开发者_运维技巧use both cocos2d and UIkit frameworks in one application, here is the scenario: user log in, via UIkit, then play a game written in cocos2d, and after that the actual uikit ordinary application starts. the problem is that, after starting cocos game, i'm unable to return to uikit view-based application. does anybody have idea how to make it? Thanks for any help

mapedd