iOS - UIButton设置文字标题下划线以及下划线颜色

创建button设置可以折行显示


- (void)viewDidLoad {
[super viewDidLoad]; UIButton * button = [[UIButton alloc] initWithFrame:CGRectMake(20, 30, 150, 70)];
[self.view addSubview:button];
[button setTitle:@"button" forState:UIControlStateNormal];
[button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal]; //button 折行显示设置
/*
NSLineBreakByWordWrapping = 0, // Wrap at word boundaries, default
NSLineBreakByCharWrapping, // Wrap at character boundaries
NSLineBreakByClipping, // Simply clip 裁剪从前面到后面显示多余的直接裁剪掉 文字过长 button宽度不够时: 省略号显示位置...
NSLineBreakByTruncatingHead, // Truncate at head of line: "...wxyz" 前面显示
NSLineBreakByTruncatingTail, // Truncate at tail of line: "abcd..." 后面显示
NSLineBreakByTruncatingMiddle // Truncate middle of line: "ab...yz" 中间显示省略号
*/
button.titleLabel.lineBreakMode = NSLineBreakByWordWrapping;
// you probably want to center it
button.titleLabel.textAlignment = NSTextAlignmentCenter; // if you want to
button.layer.borderColor = [UIColor blackColor].CGColor;
button.layer.borderWidth = 1.0; // underline Terms and condidtions
NSMutableAttributedString* tncString = [[NSMutableAttributedString alloc] initWithString:@"View Terms and Conditions"]; //设置下划线...
/*
NSUnderlineStyleNone = 0x00, 无下划线
NSUnderlineStyleSingle = 0x01, 单行下划线
NSUnderlineStyleThick NS_ENUM_AVAILABLE(10_0, 7_0) = 0x02, 粗的下划线
NSUnderlineStyleDouble NS_ENUM_AVAILABLE(10_0, 7_0) = 0x09, 双下划线
*/
[tncString addAttribute:NSUnderlineStyleAttributeName
value:@(NSUnderlineStyleSingle)
range:(NSRange){0,[tncString length]}];
//此时如果设置字体颜色要这样
[tncString addAttribute:NSForegroundColorAttributeName value:[UIColor blueColor] range:NSMakeRange(0,[tncString length])]; //设置下划线颜色...
[tncString addAttribute:NSUnderlineColorAttributeName value:[UIColor redColor] range:(NSRange){0,[tncString length]}];
[button setAttributedTitle:tncString forState:UIControlStateNormal];
}
  • 设置button的下划线直接设置文字的属性NSMutableAttributedStringtncString添加文字属性NSUnderlineStyleAttributeName并设置下划线样式,NSUnderlineStyleNone -- 无下划线,NSUnderlineStyleSingle -- 单行下划线,NSUnderlineStyleThick -- 单行加粗下划线,NSUnderlineStyleDouble -- 双下划线.
  • 设置下划线颜色属性NSUnderlineColorAttributeName
  • 最主要的是设置button的标题为NSMutableAttributedString包含多种属性的字符串string.

UILabel下划线设置: http://www.cnblogs.com/adampei-bobo/p/6500782.html

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