UILabel Text Color Change

Question

output should be like this

UILabel *name = [[UILabel alloc]initWithFrame:CGRectMake(5,10,300,20)];
name.text =[Language localizedStringForKey:@"Name *"];
name.font = [UIFont systemFontOfSize:14.0f];
[name setBackgroundColor:[UIColor clearColor]];
[self.View addSubview:name];

How to change the color of one letter? I only need label text change.

Answer 1

Answer : NSAttributedString

Check this Answer : Answer for iOS5 and iOS6 also .

For Eg :

NSMutableAttributedString * string = [[NSMutableAttributedString alloc] initWithString:@"Name  *"];
[string addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(5,1)];

Update :

Make this change

[string addAttribute:(NSString*)kCTForegroundColorAttributeName 
                value:(id)[[UIColor redColor] CGColor]
                range:NSMakeRange(5,1)];

Add following after #import line to your .m file :

#if (TARGET_OS_EMBEDDED || TARGET_OS_IPHONE)
#import <CoreText/CoreText.h>
#else
#import <AppKit/AppKit.h>
#endif

GoodLuck !!!

Answer 2

Try to use this one.This will work on IOS6 or later version.

UILabel *name = [[UILabel alloc]initWithFrame:CGRectMake(5,10,300,20)];
name.font = [UIFont systemFontOfSize:14.0f];
[name setBackgroundColor:[UIColor clearColor]];
[self.view addSubview:name];

NSMutableAttributedString *attrStr = [[NSMutableAttributedString alloc] initWithString:[NSString stringWithFormat:@"Name *"]];
[attrStr addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(5, 1)];
name.attributedText = attrStr;

Answer 3

Using NSAttributedString in default UILabel is available after iOS 6.0.

In order to support below iOS 6.0, you need to use TTTAttributedLabel . You can find usage and installation instructions on the readme file. Also note that it also uses NSAttributedString . So you can combine TTTAttributedLabel + UILabel to support both iOS 6+ and below.

Of course you can also create your own subclass of UILabel .

Answer 4

Swift 4
( Note: notation for attributed string key is changed in swift 4 )

Here is an extension for NSMutableAttributedString , that add/set color on string/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)
    }

}

Now, try above extension with UILabel and see result

let label = UILabel()
label.frame = CGRect(x: 40, y: 100, width: 280, height: 200)
let title = "Name"
let star = "*"
let stringValue = "\(title) \(star)"
label.textColor = UIColor.lightGray
label.numberOfLines = 0
let attributedString: NSMutableAttributedString = NSMutableAttributedString(string: stringValue)
attributedString.setColor(color: UIColor.red, forText: star)   // or use direct value for text "red"
label.font = UIFont.systemFont(ofSize: 26)
label.attributedText = attributedString
self.view.addSubview(label)

Answer 5

Try This:

NSMutableAttributedString *newStr = [[NSMutableAttributedString alloc] initWithString:[NSString stringWithFormat:@"Name *"]];
[newStr addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(5, 1)];
label.attributedText = newStr;

Answer 6

您应该使用NSAttributedString能够更改单个字符的属性。