关于UILabel和UIButton有的时候需要添加下划线，一般有两种方式通过默认的NSMutableAttributedString设置，第二种就是在drawRect中画一条下划线，本文就简单的选择第一种，第二种有兴趣的可以自己研究一下。
UILabel设置下划线:
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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 = [[
NSMutableAttributedString
alloc]initWithString:[
NSString
stringWithFormat:@
"博文地址:http://www.cnblogs.com/xiaofeixiang 博客园-FlyElephant QQ群:228407086"
]];
NSRange
contentRange = {0,[content length]};
[content addAttribute:
NSUnderlineStyleAttributeName
value:[
NSNumber
numberWithInteger:
NSUnderlineStyleSingle
] range:contentRange];
label.attributedText = content;
[
self
.view addSubview:label];
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UIButton设置下划线:
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UIButton *button=[[UIButton alloc]initWithFrame:CGRectMake(10, 200, 80, 30)];
NSMutableAttributedString
*title = [[
NSMutableAttributedString
alloc] initWithString:@
"FlyElephant"
];
NSRange
titleRange = {0,[title length]};
[title addAttribute:
NSUnderlineStyleAttributeName
value:[
NSNumber
numberWithInteger:
NSUnderlineStyleSingle
] range:titleRange];
[button setAttributedTitle:title
forState:UIControlStateNormal];
[button setBackgroundColor:[UIColor redColor]];
[button.titleLabel setFont:[UIFont systemFontOfSize:14]];
[
self
.view addSubview:button];
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最终效果如下:
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本文转自Fly_Elephant博客园博客，原文链接：http://www.cnblogs.com/xiaofeixiang/p/4582292.html，如需转载请自行联系原作者
