從 Scene 切換到 ViewController
TestViewController *viewController = [[[TestViewController alloc] init] autorelease];
[[CCDirector sharedDirector].navigationController pushViewController:viewController animated:YES];
// 顯示導航欄
[[CCDirector sharedDirector].navigationController setNavigationBarHidden:NO animated:NO];
從 ViewController 切換到 Scene
[[CCDirector sharedDirector]replaceScene:[HelloWorldLayer scene]];
[self.navigationController popViewControllerAnimated:YES];
// 隱藏導航欄
[[CCDirector sharedDirector].navigationController setNavigationBarHidden:YES animated:NO];