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用于标签栏的标准图标

Standard Icons for Use in Tab Bars

iPhone OS provides the standard icons described in Table 10-3 for use in tab bars. Information on symbol names and availability for these icons is in documentation for UITabBarSystemItem.

iPhone OS 提供了用于标签栏的标准图标，如表 10-3 中所示。关于这些按钮符号名称和可用状态可参阅 UITabBarSystemItem 的文档。

As with all standard buttons and icons, it’s essential to use these icons in accordance with their documented meanings. In particular, take care to base your usage of an icon on its semantic meaning, not its appearance. This will help your application’s user interface make sense even if the icon associated with a specific meaning changes its appearance. See “Using System-Provided Buttons and Icons” for further reasons why it’s important to use these icons correctly.

对于所有标准按钮和图标，你必须依照其文档中所述的含义来使用。尤其要根据其文档中描述的含义来选择图标，而非其外观。这样一来，即使相关的图标的外观改变了，你应用程序的用户界面也依然合理。关于正确使用这些图标的原因的讨论，参见“使用系统自带的按钮与图标”。

Table 10-3  Standard icons for use in tab bar tabs
表 10-3 用于标签栏标签的标准图标

Icon 图标	Meaning 含义	Name 名称
	Show application-specific bookmarks 显示特定应用程序相关的书签	Bookmarks
	Show Contacts 显示联系人	Contacts
	Show downloads 显示下载	Downloads
	Show user-determined favorites 显示用户设定的收藏夹	Favorites
	Show content featured by the application 显示应用程序推荐的内容	Featured
	Show history of user actions 显示用户操作历史	History
	Show additional tab bar items 显示更多标签栏项	More
	Show the most recent item 显示最近一次使用的项	MostRecent
	Show items most popular with all users 显示所有用户最关注的项	MostViewed
	Show the items accessed by the user within an application-defined period 显示在应用程序定义的一段时间内用户访问过的项	Recents
	Enter a search mode 进入搜索模式	Search
	Show the highest-rated items, as determined by the user 显示用户评份最高的项	TopRated