无法更改 UILabel 文本颜色

发布于 2024-08-26 16:09:37 字数 577 浏览 12 评论 0原文

我想更改 UILabel 文本颜色，但无法更改颜色，这就是我的代码的样子。

UILabel *categoryTitle = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 46, 16)];
categoryTitle.text = @"abc";
categoryTitle.backgroundColor = [UIColor clearColor];
categoryTitle.font = [UIFont systemFontOfSize:12];
categoryTitle.textAlignment = UITextAlignmentCenter;
categoryTitle.adjustsFontSizeToFitWidth = YES;
categoryTitle.textColor = [UIColor colorWithRed:188 green:149 blue:88 alpha:1.0];
[self.view addSubview:categoryTitle];
[categoryTitle release];

标签文本颜色是白色，不是我的自定义颜色。

感谢您的帮助。

原文

I want to change the UILabel text color but I can't change the color, This is how my code looks like.

UILabel *categoryTitle = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 46, 16)];
categoryTitle.text = @"abc";
categoryTitle.backgroundColor = [UIColor clearColor];
categoryTitle.font = [UIFont systemFontOfSize:12];
categoryTitle.textAlignment = UITextAlignmentCenter;
categoryTitle.adjustsFontSizeToFitWidth = YES;
categoryTitle.textColor = [UIColor colorWithRed:188 green:149 blue:88 alpha:1.0];
[self.view addSubview:categoryTitle];
[categoryTitle release];

The label text color is white ,not my custom color.

Thank for any help.

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锦欢 2024-09-02 16:09:37

UIColor 的 RGB 分量在 0 到 1 之间缩放，最大不超过 255。

尝试

categoryTitle.textColor = [UIColor colorWithRed:(188/255.f) green:... blue:... alpha:1.0];

在 Swift 中：

categoryTitle.textColor = UIColor(red: 188/255.0, green: ..., blue: ..., alpha: 1)

UIColor's RGB components are scaled between 0 and 1, not up to 255.

Try

categoryTitle.textColor = [UIColor colorWithRed:(188/255.f) green:... blue:... alpha:1.0];

In Swift:

categoryTitle.textColor = UIColor(red: 188/255.0, green: ..., blue: ..., alpha: 1)

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强者自强 2024-09-02 16:09:37

可能更好的方法是

UIColor *color = [UIColor greenColor];
[self.myLabel setTextColor:color];

因此我们有彩色文本

May be the better way is

UIColor *color = [UIColor greenColor];
[self.myLabel setTextColor:color];

Thus we have colored text

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千纸鹤带着心事 2024-09-02 16:09:37

试试这个，其中 alpha 是不透明度，其他是红色、绿色、蓝色通道 -

self.statusTextLabel.textColor = [UIColor colorWithRed:(233/255.f) green:(138/255.f) blue:(36/255.f) alpha:1];

Try this one, where alpha is opacity and others is Red,Green,Blue chanels-

self.statusTextLabel.textColor = [UIColor colorWithRed:(233/255.f) green:(138/255.f) blue:(36/255.f) alpha:1];

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云柯 2024-09-02 16:09:37

有可能，它们在 InterfaceBuilder 中没有连接。

文本颜色(colorWithRed:(188/255) green:(149/255) blue:(88/255))正确，可能连接错误，

backgroundcolor用于标签背景色textcolor 用于属性 textcolor。

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帅气尐潴 2024-09-02 16:09:37

在 swift 代码中添加属性文本颜色。

斯威夫特 4：

  let greenColor = UIColor(red: 10/255, green: 190/255, blue: 50/255, alpha: 1)
  let attributedStringColor = [NSAttributedStringKey.foregroundColor : greenColor];

  let attributedString = NSAttributedString(string: "Hello World!", attributes: attributedStringColor)
  label.attributedText = attributedString

对于斯威夫特 3：

  let greenColor = UIColor(red: 10/255, green: 190/255, blue: 50/255, alpha: 1)
  let attributedStringColor : NSDictionary = [NSForegroundColorAttributeName : greenColor];


  let attributedString = NSAttributedString(string: "Hello World!", attributes: attributedStringColor as? [String : AnyObject])
  label.attributedText = attributedString

Add attributed text color in swift code.

Swift 4:

  let greenColor = UIColor(red: 10/255, green: 190/255, blue: 50/255, alpha: 1)
  let attributedStringColor = [NSAttributedStringKey.foregroundColor : greenColor];

  let attributedString = NSAttributedString(string: "Hello World!", attributes: attributedStringColor)
  label.attributedText = attributedString

for Swift 3:

  let greenColor = UIColor(red: 10/255, green: 190/255, blue: 50/255, alpha: 1)
  let attributedStringColor : NSDictionary = [NSForegroundColorAttributeName : greenColor];


  let attributedString = NSAttributedString(string: "Hello World!", attributes: attributedStringColor as? [String : AnyObject])
  label.attributedText = attributedString

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捎一片雪花 2024-09-02 16:09:37

// This is wrong 
categoryTitle.textColor = [UIColor colorWithRed:188 green:149 blue:88 alpha:1.0];

// This should be  
categoryTitle.textColor = [UIColor colorWithRed:188/255 green:149/255 blue:88/255 alpha:1.0];

// In the documentation, the limit of the parameters are mentioned.

colorWithRed:green:blue:alpha：文档链接

// This is wrong 
categoryTitle.textColor = [UIColor colorWithRed:188 green:149 blue:88 alpha:1.0];

// This should be  
categoryTitle.textColor = [UIColor colorWithRed:188/255 green:149/255 blue:88/255 alpha:1.0];

// In the documentation, the limit of the parameters are mentioned.

colorWithRed:green:blue:alpha: documentation link

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