Orientation in UITabBarController + UIViewController

Anyone please answer for my requirement

Im using my application in this order,

first page = UIViewController, secondpage = UITabBarController with 4 tabs,

1. I need landscape on the orientation on the second tabpage(UIViewController) ? not working..

Note : When using UITabBarController its working perfect but when I add the U开发者_JAVA百科IViewController for my first page, the orientation not working...?

anyone who knows the solution plz answer

finally orientation works fine in UITabBarController while adding a separate UIViewController