Error JavaClass

Hi. I want to ask u if somebody could help me with this errors: I bought source code and when I want to build it for ios I got these errors (sorry for my english)

Assets/Scripts/OpenFeintFacade.cs(8,17): error CS0246: The type or namespace name AndroidJavaClass' could not be found. Are you missing a using directive or an assembly reference? Assets/Scripts/OpenFeintFacade.cs(9,17): error CS0246: The type or namespace name AndroidJavaClass' could not be found. Are you missing a using directive or an assembly reference?

Assets/Scripts/OpenFeintFacade.cs(10,17): error CS0246: The type or namespace name AndroidJavaClass' could not be found. Are you missing a using directive or an assembly reference? Assets/Scripts/OpenFeintFacade.cs(11,17): error CS0246: The type or namespace name AndroidJavaClass' could not be found. Are you missing a using directive or an assembly reference?

Assets/Scripts/SpriteUI/SpriteUI.cs(75,16): error CS0246: The type or namespace name iPhoneScreenOrientation' could not be found. Are you missing a using directive or an assembly reference?, Assets/Scripts/The9PaymentFacade.cs(7,17): error CS0246: The type or namespace name AndroidJavaClass' could not be found. Are you missing a using directive or an assembly reference?