UIApplicationShortcutIcon * Icon = [UIApplicationShortcutIcon iconWithType:UIApplicationShortcutIconTypeCompose];

UIApplicationShortcutIconTypeCompose是其中的一个样式，其可选用的样式在UIApplicationShortcutIconType中

一下是所有的样式

UIApplicationShortcutIconTypeCompose,

UIApplicationShortcutIconTypePlay,

UIApplicationShortcutIconTypePause,

UIApplicationShortcutIconTypeAdd,

UIApplicationShortcutIconTypeLocation,

UIApplicationShortcutIconTypeSearch,

UIApplicationShortcutIconTypeShare,

UIApplicationShortcutIconTypeProhibit      NS_ENUM_AVAILABLE_IOS(9_1),

UIApplicationShortcutIconTypeContact        NS_ENUM_AVAILABLE_IOS(9_1),

UIApplicationShortcutIconTypeHome          NS_ENUM_AVAILABLE_IOS(9_1),

UIApplicationShortcutIconTypeMarkLocation  NS_ENUM_AVAILABLE_IOS(9_1),

UIApplicationShortcutIconTypeFavorite      NS_ENUM_AVAILABLE_IOS(9_1),

UIApplicationShortcutIconTypeLove          NS_ENUM_AVAILABLE_IOS(9_1),

UIApplicationShortcutIconTypeCloud          NS_ENUM_AVAILABLE_IOS(9_1),

UIApplicationShortcutIconTypeInvitation    NS_ENUM_AVAILABLE_IOS(9_1),

UIApplicationShortcutIconTypeConfirmation  NS_ENUM_AVAILABLE_IOS(9_1),

UIApplicationShortcutIconTypeMail          NS_ENUM_AVAILABLE_IOS(9_1),

UIApplicationShortcutIconTypeMessage        NS_ENUM_AVAILABLE_IOS(9_1),

UIApplicationShortcutIconTypeDate          NS_ENUM_AVAILABLE_IOS(9_1),

UIApplicationShortcutIconTypeTime          NS_ENUM_AVAILABLE_IOS(9_1),

UIApplicationShortcutIconTypeCapturePhoto  NS_ENUM_AVAILABLE_IOS(9_1),

UIApplicationShortcutIconTypeCaptureVideo  NS_ENUM_AVAILABLE_IOS(9_1),

UIApplicationShortcutIconTypeTask          NS_ENUM_AVAILABLE_IOS(9_1),

UIApplicationShortcutIconTypeTaskCompleted  NS_ENUM_AVAILABLE_IOS(9_1),

UIApplicationShortcutIconTypeAlarm          NS_ENUM_AVAILABLE_IOS(9_1),

UIApplicationShortcutIconTypeBookmark      NS_ENUM_AVAILABLE_IOS(9_1),

UIApplicationShortcutIconTypeShuffle        NS_ENUM_AVAILABLE_IOS(9_1),

UIApplicationShortcutIconTypeAudio          NS_ENUM_AVAILABLE_IOS(9_1),

UIApplicationShortcutIconTypeUpdate        NS_ENUM_AVAILABLE_IOS(9_1)

下面是样式（我测试最多4个按钮）

关于如何创建UIApplicationShortcutItem请看这里