UILabel設(shè)置下劃線
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(10, 100, 310, 50)];
label.backgroundColor = [UIColor redColor];
[label setLineBreakMode:NSLineBreakByWordWrapping];
label.numberOfLines =3;
[label setFont:[UIFont systemFontOfSize:14]];
NSMutableAttributedString*content = [[NSMutableAttributedStringalloc]initWithString:[NSStringstringWithFormat:@"博文地址:http://www.cnblogs.com/xiaofeixiang博客園-FlyElephant QQ群:228407086"]];
NSRangecontentRange = {0,[content length]};
[content addAttribute:NSUnderlineStyleAttributeNamevalue:[NSNumbernumberWithInteger:NSUnderlineStyleSingle] range:contentRange];
label.attributedText = content;
[self.view addSubview:label];
UIButton設(shè)置下劃線:
UIButton *button=[[UIButton alloc]initWithFrame:CGRectMake(10, 200, 80, 30)];
NSMutableAttributedString*title = [[NSMutableAttributedStringalloc] initWithString:@"FlyElephant"];
NSRangetitleRange = {0,[title length]};
[title addAttribute:NSUnderlineStyleAttributeNamevalue:[NSNumbernumberWithInteger:NSUnderlineStyleSingle] range:titleRange];
[button setAttributedTitle:title
forState:UIControlStateNormal];
[button setBackgroundColor:[UIColor redColor]];
[button.titleLabel setFont:[UIFont systemFontOfSize:14]];
[self.view addSubview:button];
方法二：
HyperlinksButton.h
[objc]view plaincopyprint?
#import?
@interfaceHyperlinksButton?:?UIButton
{
UIColor*lineColor;
}
-(void)setColor:(UIColor*)color;
@end
HyperlinksButton.m
[objc]view plaincopyprint?
#import?"HyperlinksButton.h"
@implementationHyperlinksButton
-?(id)initWithFrame:(CGRect)frame
{
self=?[superinitWithFrame:frame];
if(self)?{
}
returnself;
}
-(void)setColor:(UIColor*)color{
lineColor?=?[colorcopy];
[selfsetNeedsDisplay];
}
-?(void)drawRect:(CGRect)rect?{
CGRect?textRect?=self.titleLabel.frame;
CGContextRef?contextRef?=?UIGraphicsGetCurrentContext();
CGFloat?descender?=self.titleLabel.font.descender;
if([lineColorisKindOfClass:[UIColorclass]]){
CGContextSetStrokeColorWithColor(contextRef,?lineColor.CGColor);
}
CGContextMoveToPoint(contextRef,?textRect.origin.x,?textRect.origin.y+?textRect.size.height+?descender+1);
CGContextAddLineToPoint(contextRef,?textRect.origin.x+?textRect.size.width,?textRect.origin.y+?textRect.size.height+?descender+1);
CGContextClosePath(contextRef);
CGContextDrawPath(contextRef,?kCGPathStroke);
}
@end
