iOS7
iOS7iOS7appiOS7UINavigationBar, UIButton, UIActionSheet, UITabBariOS7
1。UINavigationBar
iOS7UINavigationBariOS7appiOS7 UINavigationBar
,,,
3。UIActionSheet UIActionSheetUIPickerViewiOS7UIActionSheet
4。UITabBar iOS7UITabBar
UITabBarUITabBarUIView
