如何在iphone应用程序开发中的导航栏上添加10个以上的按钮？

In my application I have to add 8 buttons on a navigation bar..So it's very much normal that these button should be in a view and there should be one previous and next button. When i will press the next button then using animation it will show the next buttons whose are out of the view and same as for previous button.In my application I have to add 8 buttons on a