我想更改UILabel文本颜色,但我无法更改颜色,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];
标签文字颜色为白色,而不是我的自定义颜色。
感谢您的帮助。
答案 0 :(得分:174)
UIColor的RGB分量在0到1之间缩放,而不是最多255个。
尝试
categoryTitle.textColor = [UIColor colorWithRed:(188/255.f) green:... blue:... alpha:1.0];
在斯威夫特:
categoryTitle.textColor = UIColor(red: 188/255.0, green: ..., blue: ..., alpha: 1)
答案 1 :(得分:8)
可能是更好的方式
UIColor *color = [UIColor greenColor];
[self.myLabel setTextColor:color];
因此我们有彩色文字
答案 2 :(得分:2)
尝试这个,其中alpha是不透明度,其他是红色,绿色,蓝色chanels-
self.statusTextLabel.textColor = [UIColor colorWithRed:(233/255.f) green:(138/255.f) blue:(36/255.f) alpha:1];
答案 3 :(得分:1)
可能,它们未在InterfaceBuilder中连接。
文字颜色(colorWithRed:(188/255) green:(149/255) blue:(88/255))
是正确的,可能是连接错误,
backgroundcolor用于标签的背景颜色,textcolor用于属性textcolor。
答案 4 :(得分:0)
以快速代码添加属性文本颜色。
迅速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
答案 5 :(得分:0)
// 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.