ipad彈出中間設置界面

設置如下:

UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:settingViewController];
self.navigationController =navigationController;
[navigationController release];

self.navigationController.modalPresentationStyle = UIModalPresentationFormSheet;

self.navigationController.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;