How to use NSAttributedString in iOS 6

infoString=@"This is an example of Attributed String";

NSMutableAttributedString *attString=[[NSMutableAttributedString alloc] initWithString:infoString];

NSInteger _stringLength=[infoString length];

UIColor *_black=[UIColor blackColor];

UIFont *font=[UIFont fontWithName:@"Helvetica-Bold" size:30.0f];

[attString addAttribute:NSFontAttributeName value:font range:NSMakeRange(0, _stringLength)];

[attString addAttribute:NSForegroundColorAttributeName value:_black range:NSMakeRange(0, _stringLength)];

               

UIColor *_red=[UIColor redColor];

UIFont *font=[UIFont fontWithName:@"Helvetica-Bold" size:72.0f];

[attString addAttribute:NSFontAttributeName value:font range:NSMakeRange(0, _stringLength)];

[attString addAttribute:NSStrokeColorAttributeName value:_red range:NSMakeRange(0, _stringLength)];

[attString addAttribute:NSStrokeWidthAttributeName value:[NSNumber numberWithFloat:3.0] range:NSMakeRange(0, _stringLength)];

UIColor *_red=[UIColor redColor];

UIFont *font=[UIFont fontWithName:@"Helvetica-Bold" size:72.0f];

[attString addAttribute:NSFontAttributeName value:font range:NSMakeRange(0, _stringLength)];

[attString addAttribute:NSStrokeColorAttributeName value:_red range:NSMakeRange(0, _stringLength)];

[attString addAttribute:NSStrokeWidthAttributeName value:[NSNumber numberWithFloat:-3.0] range:NSMakeRange(0, _stringLength)];

UIColor *_red=[UIColor redColor];

UIColor *_green=[UIColor greenColor];

UIFont *font=[UIFont fontWithName:@"Helvetica-Bold" size:72.0f];

[attString addAttribute:NSFontAttributeName value:font range:NSMakeRange(0, _stringLength)];

[attString addAttribute:NSForegroundColorAttributeName value:_green range:NSMakeRange(0, _stringLength)];

[attString addAttribute:NSStrokeColorAttributeName value:_red range:NSMakeRange(0, _stringLength)];

[attString addAttribute:NSStrokeWidthAttributeName value:[NSNumber numberWithFloat:-3.0] range:NSMakeRange(0, _stringLength)];

UIColor *_green=[UIColor greenColor];

UIFont *font=[UIFont fontWithName:@"Helvetica-Bold" size:72.0f];

NSShadow *shadowDic=[[NSShadow alloc] init];

[shadowDic setShadowBlurRadius:5.0];

[shadowDic setShadowColor:[UIColor grayColor]];

[shadowDic setShadowOffset:CGSizeMake(0, 3)];

              

[attString addAttribute:NSFontAttributeName value:font range:NSMakeRange(0, _stringLength)];

[attString addAttribute:NSForegroundColorAttributeName value:_green range:NSMakeRange(0, _stringLength)];

[attString addAttribute:NSShadowAttributeName value:shadowDic range:NSMakeRange(0, _stringLength)];

                

UIColor *_red=[UIColor redColor];

UIFont *font=[UIFont fontWithName:@"Helvetica-Bold" size:72.0f];

[attString addAttribute:NSFontAttributeName value:font range:NSMakeRange(0, _stringLength)];

  [attString addAttribute:NSForegroundColorAttributeName value:_red range:NSMakeRange(0, _stringLength)];              

  [attString addAttribute:NSKernAttributeName value:[NSNumber numberWithInt:5] range:NSMak

UIColor *_red=[UIColor redColor];

UIFont *font=[UIFont fontWithName:@"Helvetica-Bold" size:30.0f];

[attString addAttribute:NSFontAttributeName value:font range:NSMakeRange(0, _stringLength)];

[attString addAttribute:NSForegroundColorAttributeName value:_red range:NSMakeRange(0, _stringLength)];

[attString addAttribute:NSUnderlineStyleAttributeName value:[NSNumber numberWithInt:2] range:NSMakeRange(0, _stringLength)];

UIColor *_blue=[UIColor blueColor];

UIColor *_blueL=[UIColor colorWithRed:0 green:0 blue:0.5 alpha:0.7];

UIFont *font=[UIFont fontWithName:@"Helvetica-Bold" size:30.0f];

                

[attString addAttribute:NSFontAttributeName value:font range:NSMakeRange(0, _stringLength)];

[attString addAttribute:NSForegroundColorAttributeName value:_blue range:NSMakeRange(0, _stringLength)];

[attString addAttribute:NSBackgroundColorAttributeName value:_blueL range:NSMakeRange(0, 20)];