UITabBarItem

UITabBarController

UITabBar

UIBarItem

UITabBarItem

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UITabBarItem就是UITabBar上显示的小按钮。

我们也可以定制系统UITabBarItem按钮，只需通过UITabBarItem.appearance()获取即可。

1 Initializing an Item

/// 通过标题、图片、tag初始化按钮
public convenience init(title: String?, image: UIImage?, tag: Int)

/// 通过标题、默认图片和选中图片初始化按钮
@available(iOS 7.0, *)
public convenience init(title: String?, image: UIImage?, selectedImage: UIImage?)

/// 通过系统样式初始化按钮
public convenience init(tabBarSystemItem systemItem: UITabBarSystemItem, tag: Int)

2 Getting and Setting Properties

/// 未读消息的标记
public var badgeValue: String?

3 Customizing Appearance

/// 选中按钮的图片
@available(iOS 7.0, *)
public var selectedImage: UIImage?

/// 标题位置
@available(iOS 5.0, *)
public var titlePositionAdjustment: UIOffset

 

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Appendix

Related Documentation

UIKit Framework Reference

UITabBarController Class Reference

Revision History

时间	描述
2016-01-07	博文完成

Copyright

CSDN：http://blog.csdn.net/y550918116j

GitHub：https://github.com/937447974/Blog