你如何在 UIBarItem 中使用 setTitleTextAttributes:forState?

问题描述

iOS中UIBarItem中的setTitleTextAttributes:forState:如何使用?

你如何设置NSDictionary?无法使其工作，文档对此也不是很清楚.

How do you set the NSDictionary? Can't make it work and documentation isn't very clear about that.

来自文档:

setTitleTextAttributes:forState:

为给定的控件状态设置标题的文本属性:

- (void)setTitleTextAttributes:(NSDictionary *)attributes 
                      forState:(UIControlState)state

参数:

attributes:包含文本属性键值对的字典.您可以使用 NSString UIKit Additions Reference 中列出的键指定字体、文本颜色、文本阴影颜色和文本阴影偏移量.

attributes: A dictionary containing key-value pairs for text attributes. You can specify the font, text color, text shadow color, and text shadow offset using the keys listed in NSString UIKit Additions Reference.

state:要为其设置标题文本属性的控件状态.

state: The control state for which you want to set the text attributes for the title.

推荐答案

示例代码:

[[UIBarItem appearance] setTitleTextAttributes:
[NSDictionary dictionaryWithObjectsAndKeys:
[UIColor colorWithRed:220.0/255.0 green:104.0/255.0 blue:1.0/255.0 alpha:1.0], UITextAttributeTextColor, 
[UIColor colorWithRed:1.0 green:1.0 blue:1.0 alpha:1.0], UITextAttributeTextShadowColor, 
[NSValue valueWithUIOffset:UIOffsetMake(0, 1)], UITextAttributeTextShadowOffset, 
[UIFont fontWithName:@"AmericanTypewriter" size:0.0], UITextAttributeFont, nil] 
forState:UIControlStateNormal];

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