According to ios tabs guideline:
- Displays no more than five tabs at one time in a horizontally compact environment (if there are more tabs, the tab bar displays four of them and adds the More tab, which reveals the additional tabs in a list)
Something like this:
https://developer.apple.com/library/ios/documentation/UserExperience/Conceptual/MobileHIG/Art/music_tab_bar_iphone_2x.png
How can I do that?