UIKit是一个小型的、灵活的的UI框架。提供的UI组件包括：对话框、确认、颜色选择、翻转卡、上下文菜单以及提醒框等等。-UIKit is a small, flexible UI framework. Provides UI components include: Dialog, confirmation, color choice, flip cards, context menus, and reminder box and so on.