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圆角矩形按钮

Rounded Rectangle Buttons

A rounded rectangle button is a versatile button you can use in a view to perform an action. You can see examples of this type of button at the bottom of an individual’s Contacts view: The Text Message and Add to Favorites buttons are rounded rectangle buttons, as shown in Figure 9-9.

圆角矩形按钮是一个多功能的按钮，你可以在一个视图中用它来执行的一个操作。在个人的联系人视图的底部，你可以看到很多这种按钮的例子：文字信息按钮，添加到收藏夹按钮都是圆角矩形按钮，如图9-9所示。

Figure 9-9  Rounded rectangle buttons perform application-specific actions
图9-9 圆角矩形按钮，执行应用程序的具体行为

When you supply a title for a rounded rectangle button, be sure to:

当你给一个圆角矩形按钮提供标题时，一定要：

• Use title-style capitalization (that is, capitalize every word except articles, coordinating conjunctions, and prepositions of four or fewer letters)

使用标题样式首字母大写规则（即，大写每个单词的首字母，除了冠词，并列连词和四个或更少字母的介词）

• Avoid creating a title that is too long. Overly long text gets truncated, which can make it difficult for users to understand it.

避免创建一个太长的标题。超长文本被截断后，用户会很难理解它。

To learn more about using a rounded rectangle button in your code, see UIButton Class Reference.

要了解有关在代码中使用圆角矩形按钮的信息，请参阅 UIButton 类型参考。