Customize or Formated UILabel in iPhone

The need for a formated UILabel can be done by creating the category of UILabel. Category means we must increase the functionality of the UILabel provided by the iOS SDK.

NSMutableAttributedString   class provides us the functionality to handle the UILabel in more depth. The following functionality is provided by NSMutableAttributedString:
 

 

Step 1: Create an new project with the name Customize Label.

Step 2: Create a category having the name FormattedText.
 

 

Step 3
 

 

Step 4: Open the "UILabel+FormattedText.h" file.

#import <UIKit/UIKit.h>
@interface UILabel (FormattedText)
- (void)setTextColor:(UIColor *)textColor range:(NSRange)range;
- (void)setFont:(UIFont *)font range:(NSRange)range;
@end

Step 5: Open the  "UILabel+FormattedText.m" file.

#import "UILabel+FormattedText.h"

@implementation UILabel (FormattedText)
- (void)setTextColor:(UIColor *)textColor range:(NSRange)range
{
    NSMutableAttributedString *text = [[NSMutableAttributedString alloc] initWithAttributedString: self.attributedText];
    [text addAttribute:NSForegroundColorAttributeName  value: textColor   range: range];
    [selfsetAttributedText: text];
}
- (void)setFont:(UIFont *)font range:(NSRange)range
{
    NSMutableAttributedString *text = [[NSMutableAttributedString alloc] initWithAttributedString: self.attributedText];
    [text addAttribute:NSFontAttributeName   value: font     range: range];
    [selfsetAttributedText: text];
}
@end
 

STEP 6: Open the "ViewController.m" file.

#import "UILabel+FormattedText.h"
- (void)viewDidLoad
{
    [superviewDidLoad];
// Do any additional setup after loading the view, typically from a nib
    // Colors
    UILabel *labelC = [[UILabelalloc] init];
    [labelC setFrame:CGRectMake(0,0, self.view.frame.size.width,floorf(self.view.frame.size.height / 3))];
    [labelC setBackgroundColor:[UIColorclearColor]];
    [labelC setTextAlignment:NSTextAlignmentCenter];
    [labelC setText:@"This is a text with\nRED and CYAN"];
    [labelC setNumberOfLines:2];
    [labelC setTextColor:[UIColoryellowColor]];
    [labelC setFont:[UIFontfontWithName:@"Courier"size:14]];
    [labelC setTextColor:[UIColorredColor] range:NSMakeRange(20,3)];
    [labelC setTextColor:[UIColorcyanColor] range:NSMakeRange(28,4)];
    [self.viewaddSubview:labelC];
    // Fonts
    UILabel *labelF = [[UILabelalloc] init];
    [labelF setFrame:CGRectMake(0,floorf(self.view.frame.size.height / 3), self.view.frame.size.width,floorf(self.view.frame.size.height / 3))];
    [labelF setBackgroundColor:[UIColorclearColor]];
    [labelF setTextAlignment:NSTextAlignmentCenter];
    [labelF setText:@"This is a text with\nBOLD and ITALIC"];
    [labelF setNumberOfLines:2];
    [labelF setTextColor:[UIColoryellowColor]];
    [labelF setFont:[UIFontfontWithName:@"Courier"size:14]];
    [labelF setFont:[UIFontfontWithName:@"Courier-Bold"size:14] range:NSMakeRange(20,4)];
    [labelF setFont:[UIFontfontWithName:@"Courier-Oblique"size:14] range:NSMakeRange(29,6)];
    [self.viewaddSubview:labelF];
     // Colors AND Fonts
    UILabel *labelCF = [[UILabelalloc] init];
    [labelCF setFrame:CGRectMake(0,floorf(self.view.frame.size.height * 2 / 3), self.view.frame.size.width,floorf(self.view.frame.size.height / 3))];
    [labelCF setBackgroundColor:[UIColorclearColor]];
    [labelCF setTextAlignment:NSTextAlignmentCenter];
    [labelCF setText:@"This is a text with\nBOLD-RED and ITALIC-CYAN"];
    [labelCF setNumberOfLines:2];
    [labelCF setTextColor:[UIColoryellowColor]];
    [labelCF setFont:[UIFontfontWithName:@"Courier"size:14]];
    [labelCF setTextColor:[UIColorredColor] range:NSMakeRange(20,8)];
    [labelCF setFont:[UIFontfontWithName:@"Courier-Bold"size:14] range:NSMakeRange(20,8)];
    [labelCF setTextColor:[UIColorcyanColor] range:NSMakeRange(33,11)];
    [labelCF setFont:[UIFontfontWithName:@"Courier-Oblique"size:14] range:NSMakeRange(33,11)];
    [self.viewsetBackgroundColor:[UIColorlightGrayColor]];
    [self.viewaddSubview:labelCF];
    }
 

Step 7: O/P