UILabel带下划线实现

创建uilabel对象

UILabel*Label2 = [[UILabel alloc]initWithFrame:CGRectMake(0, 0,100, 25)];

//设置下划线属性

    NSMutableAttributedString *str = [[NSMutableAttributedString alloc] initWithString:@"文字下带下划线?"];

    [straddAttribute:NSForegroundColorAttributeName value:[UIColor blueColor] range:NSMakeRange(0,8)];

    [straddAttribute:NSUnderlineStyleAttributeName value:[NSNumber numberWithInteger:NSUnderlineStyleSingle] range:NSMakeRange(0, 8)];

Label2.attributedText= str;

效果