UI: 富文本

#import "RegisterBtn.h"

@implementation RegisterBtn

- (instancetype)initWithFrame:(CGRect)frame
{
    if(self = [super initWithFrame: frame]){
    
        UILabel * labelOne = [[UILabel alloc ] initWithFrame: CGRectMake(0, 0, 160, 20) ];
        
        NSMutableAttributedString * theStr = [[NSMutableAttributedString alloc ] initWithString: @"已有账号，立即登录" ];
        [theStr addAttributes: @{NSFontAttributeName: [UIFont systemFontOfSize: 14], NSForegroundColorAttributeName: [UIColor whiteColor]} range: NSMakeRange(0, 5)];
        [theStr addAttributes: @{NSFontAttributeName: [UIFont systemFontOfSize: 14], NSForegroundColorAttributeName: [UIColor greenColor]} range: NSMakeRange(5, 4)];
        labelOne.attributedText = theStr;
        [self addSubview: labelOne ];
    
    }

    return self;
}

SWIFT

let idText = model.id        
        let indexId = model.id?.characters.count
        let strId = NSMutableAttributedString(string: "身份证:  \(idText!)")
        strId.addAttributes([NSFontAttributeName: UIFont.boldSystemFontOfSize(23), NSForegroundColorAttributeName: UIColor.magentaColor()], range: NSMakeRange(6, indexId!))
        self.idLabel.attributedText = strId






# let modelText = model.commentCount
       ## let indexComment = modelText?.characters.count
        let stringComment = NSMutableAttributedString(string: "评论数：  \(modelText!)")
        stringComment.addAttributes([NSFontAttributeName: UIFont.systemFontOfSize(21), NSBackgroundColorAttributeName:UIColor.cyanColor()], range: NSMakeRange(6, indexComment!))
        self.commentsLabel.attributedText = stringComment







 let authorText = model.author
        let indexAuthor = authorText?.characters.count
        let stringAuthor = NSMutableAttributedString(string: "作者：  \(authorText!)")
        stringAuthor.addAttributes([NSFontAttributeName: UIFont.boldSystemFontOfSize(22), NSForegroundColorAttributeName: UIColor.redColor(), NSUnderlineStyleAttributeName: 10], range: NSMakeRange(5, indexAuthor!))


其中
 NSUnderlineStyleAttributeName: 10
因为
OC
typedef enum NSUnderlineStyle : NSInteger {
   NSUnderlineStyleNone = 0x00,
   NSUnderlineStyleSingle = 0x01,
   NSUnderlineStyleThick = 0x02,
   NSUnderlineStyleDouble = 0x09,
   NSUnderlinePatternSolid = 0x0000,
   
   NSUnderlinePatternDot = 0x0100,
   NSUnderlinePatternDash = 0x0200,
   NSUnderlinePatternDashDot = 0x0300,
   NSUnderlinePatternDashDotDot = 0x0400,
   NSUnderlineByWord = 0x8000 
} NSUnderlineStyle;