Question

如何在setTitleTextAttributes:forState:的{{1}}中使用UIBarItem？

如何设置iOS？不能使它工作，文档不是很清楚。

来自文档：

NSDictionary

设置给定控件状态的标题文本属性：

setTitleTextAttributes:forState:

参数：

attributes：包含文本属性的键值对的字典。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。

state：要为其设置标题文本属性的控件状态。

Answer 1

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];

Answer 2

iOS 8.0和Swift的答案。

目标C代码：

NSShadow *shadow = [NSShadow new];
[shadow setShadowColor:[UIColor colorWithRed:1.0 green:1.0 blue:1.0 alpha:1.0]];
[shadow setShadowOffset:CGSizeMake(0, 1)];

NSDictionary *attributes = @{
                                NSForegroundColorAttributeName: [UIColor colorWithRed:220.0/255.0 green:104.0/255.0 blue:1.0/255.0 alpha:1.0],
                                NSShadowAttributeName: shadow,
                                NSFontAttributeName: [UIFont fontWithName:@"AmericanTypewriter" size:16.0]
                             };

[self.navigationItem.rightBarButtonItem setTitleTextAttributes:attributes forState: UIControlStateNormal];

// Or you can use.

[[UIBarItem appearance] setTitleTextAttributes:attributes forState: UIControlStateNormal];

Swift 4.0：

// Bar title text color
let shadow = NSShadow()
shadow.shadowColor = UIColor(red: 1.0, green: 1.0, blue: 1.0, alpha: 1.0)
shadow.shadowOffset = CGSize(width: 0, height: 1)
let color : UIColor = UIColor(red: 220.0/255.0, green: 104.0/255.0, blue: 1.0/255.0, alpha: 1.0)
let titleFont : UIFont = UIFont(name: "AmericanTypewriter", size: 16.0)!

let attributes = [
        NSAttributedStringKey.foregroundColor : color,
        NSAttributedStringKey.shadow : shadow,
        NSAttributedStringKey.font : titleFont
    ]

self.navigationItem.rightBarButtonItem?.setTitleTextAttributes(attributes, for: UIControlState.normal)
// Or you can use
UIBarItem.appearance().setTitleTextAttributes(attributes, for: UIControlState.normal)

Answer 3

这是phix23的代码，只是更新了，我觉得更清晰，语法：

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

Answer 4

[self.tabBarItem setTitleTextAttributes:[NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:[UIColor whiteColor], nil] forKeys:[NSArray arrayWithObjects:UITextAttributeTextColor, nil]] forState:UIControlStateNormal];

Answer 5

Swift5 设置UIBarItem标题颜色

let attributes = [
    NSAttributedString.Key.foregroundColor : UIColor.orange,
    NSAttributedString.Key.font : UIFont.systemFont(ofSize: 20)
]
vc.tabBarItem.setTitleTextAttributes(attributes, for: .normal)

你如何使用setTitleTextAttributes：for BarItem中的State？

5 个答案:

iOS 8.0和Swift的答案。