iOS开发-UILabel和UIButton添加下划线
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: 1 2 3 4 5 6 7 8 9 10 11 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]; UIButton设置下划线: 1 2 3 4 5 6 7 8 9 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]; 最终效果如下: 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