ios 带有两种不同颜色文本的 UILabel
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/6501808/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
UILabel with text of two different colors
提问by Peter
I want to display a string like this in a UILabel:
我想在 a 中显示这样的字符串UILabel：
There are 5 results.
有 5 个结果。
Where the number 5 is red in color and the rest of the string is black.
其中数字 5 为红色，其余部分为黑色。
How can I do this in code?
我怎样才能在代码中做到这一点？
回答by Jo?o Costa
The way to do it is to use NSAttributedStringlike this:
这样做的方法是这样使用NSAttributedString：
NSMutableAttributedString *text =
[[NSMutableAttributedString alloc]
initWithAttributedString: label.attributedText];
[text addAttribute:NSForegroundColorAttributeName
value:[UIColor redColor]
range:NSMakeRange(10, 1)];
[label setAttributedText: text];
I created a UILabelextension to do it.
我创建了一个UILabel扩展来做到这一点。
回答by anoop4real
I have done this by creating a categoryfor NSMutableAttributedString
我已经通过创建一个categoryforNSMutableAttributedString
-(void)setColorForText:(NSString*) textToFind withColor:(UIColor*) color
{
NSRange range = [self.mutableString rangeOfString:textToFind options:NSCaseInsensitiveSearch];
if (range.location != NSNotFound) {
[self addAttribute:NSForegroundColorAttributeName value:color range:range];
}
}
Use it like
使用它就像
- (void) setColoredLabel
{
NSMutableAttributedString *string = [[NSMutableAttributedString alloc] initWithString:@"Here is a red blue and green text"];
[string setColorForText:@"red" withColor:[UIColor redColor]];
[string setColorForText:@"blue" withColor:[UIColor blueColor]];
[string setColorForText:@"green" withColor:[UIColor greenColor]];
mylabel.attributedText = string;
}
SWIFT 3
斯威夫特 3
extension NSMutableAttributedString{
func setColorForText(_ textToFind: String, with color: UIColor) {
let range = self.mutableString.range(of: textToFind, options: .caseInsensitive)
if range.location != NSNotFound {
addAttribute(NSForegroundColorAttributeName, value: color, range: range)
}
}
}
USAGE
用法
func setColoredLabel() {
let string = NSMutableAttributedString(string: "Here is a red blue and green text")
string.setColorForText("red", with: #colorLiteral(red: 0.9254902005, green: 0.2352941185, blue: 0.1019607857, alpha: 1))
string.setColorForText("blue", with: #colorLiteral(red: 0.2392156869, green: 0.6745098233, blue: 0.9686274529, alpha: 1))
string.setColorForText("green", with: #colorLiteral(red: 0.3411764801, green: 0.6235294342, blue: 0.1686274558, alpha: 1))
mylabel.attributedText = string
}
SWIFT 4@kj13 Thanks for notifying
SWIFT 4@kj13 感谢通知
// If no text is send, then the style will be applied to full text
func setColorForText(_ textToFind: String?, with color: UIColor) {
let range:NSRange?
if let text = textToFind{
range = self.mutableString.range(of: text, options: .caseInsensitive)
}else{
range = NSMakeRange(0, self.length)
}
if range!.location != NSNotFound {
addAttribute(NSAttributedStringKey.foregroundColor, value: color, range: range!)
}
}
I have did more experiments with attributes and below are the results, here is theSOURCECODE
我对属性做了更多的实验，下面是结果，这里是SOURCECODE
Here is the result
这是结果
回答by Hardik Mamtora
Here you go
干得好
NSMutableAttributedString * string = [[NSMutableAttributedString alloc] initWithString:lblTemp.text];
[string addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(0,5)];
[string addAttribute:NSForegroundColorAttributeName value:[UIColor greenColor] range:NSMakeRange(5,6)];
[string addAttribute:NSForegroundColorAttributeName value:[UIColor blueColor] range:NSMakeRange(11,5)];
lblTemp.attributedText = string;
回答by Krunal
Swift 4
斯威夫特 4
// An attributed string extension to achieve colors on text.
extension NSMutableAttributedString {
func setColor(color: UIColor, forText stringValue: String) {
let range: NSRange = self.mutableString.range(of: stringValue, options: .caseInsensitive)
self.addAttribute(NSAttributedStringKey.foregroundColor, value: color, range: range)
}
}
// Try it with label
let label = UILabel()
label.frame = CGRect(x: 70, y: 100, width: 260, height: 30)
let stringValue = "There are 5 results."
let attributedString: NSMutableAttributedString = NSMutableAttributedString(string: stringValue)
attributedString.setColor(color: UIColor.red, forText: "5")
label.font = UIFont.systemFont(ofSize: 26)
label.attributedText = attributedString
self.view.addSubview(label)
Result
结果
Swift 3
斯威夫特 3
func setColoredLabel() {
var string: NSMutableAttributedString = NSMutableAttributedString(string: "redgreenblue")
string.setColor(color: UIColor.redColor(), forText: "red")
string.setColor(color: UIColor.greenColor(), forText: "green")
string.setColor(color: UIColor.blueColor(, forText: "blue")
mylabel.attributedText = string
}
func setColor(color: UIColor, forText stringValue: String) {
var range: NSRange = self.mutableString.rangeOfString(stringValue, options: NSCaseInsensitiveSearch)
if range != nil {
self.addAttribute(NSForegroundColorAttributeName, value: color, range: range)
}
}
Result:
结果：
回答by raju dontiboina
//NSString *myString = @"I have to replace text 'Dr Andrew Murphy, John Smith' ";
NSString *myString = @"Not a member?signin";
//Create mutable string from original one
NSMutableAttributedString *attString = [[NSMutableAttributedString alloc] initWithString:myString];
//Fing range of the string you want to change colour
//If you need to change colour in more that one place just repeat it
NSRange range = [myString rangeOfString:@"signin"];
[attString addAttribute:NSForegroundColorAttributeName value:[UIColor colorWithRed:(63/255.0) green:(163/255.0) blue:(158/255.0) alpha:1.0] range:range];
//Add it to the label - notice its not text property but it's attributeText
_label.attributedText = attString;
回答by Deepak Thakur
Anups answer in swift. Can be reused from any class.
Anups 迅速回答。可以从任何类中重用。
In swift file
在快速文件中
extension NSMutableAttributedString {
func setColorForStr(textToFind: String, color: UIColor) {
let range = self.mutableString.rangeOfString(textToFind, options:NSStringCompareOptions.CaseInsensitiveSearch);
if range.location != NSNotFound {
self.addAttribute(NSForegroundColorAttributeName, value: color, range: range);
}
}
}
In Some view controller
在一些视图控制器中
let attributedString: NSMutableAttributedString = NSMutableAttributedString(string: self.labelShopInYourNetwork.text!);
attributedString.setColorForStr("YOUR NETWORK", color: UIColor(red: 0.039, green: 0.020, blue: 0.490, alpha: 1.0));
self.labelShopInYourNetwork.attributedText = attributedString;
回答by Tricertops
Since iOS 6, UIKit supports drawing attributed strings, so no extension or replacement is needed.
从iOS 6 开始，UIKit 支持绘制属性字符串，因此不需要扩展或替换。
From UILabel:
来自UILabel：
@property(nonatomic, copy) NSAttributedString *attributedText;
You just need to build up your NSAttributedString. There are basically two ways:
你只需要建立你的NSAttributedString. 基本上有两种方式：
Append chunks of text with the same attributes - for each part create one
NSAttributedStringinstance and append them to oneNSMutableAttributedStringCreate attributed text from plain string and then add attributed for given ranges – find the range of your number (or whatever) and apply different color attribute on that.
附加具有相同属性的文本块 - 为每个部分创建一个
NSAttributedString实例并将它们附加到一个NSMutableAttributedString从纯字符串创建属性文本，然后为给定范围添加属性 - 找到您的数字（或其他）的范围并在其上应用不同的颜色属性。
回答by Mic Pringle
Having a UIWebView or more than one UILabel could be considered overkill for this situation.
在这种情况下，拥有一个 UIWebView 或多个 UILabel 可能被认为是矫枉过正。
My suggestion would be to use TTTAttributedLabelwhich is a drop-in replacement for UILabel that supports NSAttributedString. This means you can very easily apply differents styles to different ranges in a string.
我的建议是使用TTTAttributedLabel，它是支持NSAttributedString 的UILabel 的替代品。这意味着您可以非常轻松地将不同的样式应用于字符串中的不同范围。
回答by omz
For displaying short, formatted text that doesn't need to be editable, Core Textis the way to go. There are several open-source projects for labels that use NSAttributedStringand Core Text for rendering. See CoreTextAttributedLabelor OHAttributedLabelfor example.
为了显示不需要可编辑的简短格式化文本，Core Text是要走的路。有几个开源项目使用标签NSAttributedString和 Core Text 进行渲染。例如，请参阅CoreTextAttributedLabel或OHAttributedLabel。
回答by werner
NSAttributedStringis the way to go. The following question has a great answer that shows you how to do it How do you use NSAttributedString
NSAttributedString是要走的路。以下问题有一个很好的答案，向您展示了如何使用 NSAttributedString
