代码自定义双色title的按钮

所图所示，通过代码自定义这样的按钮。

.h文件

//
//  CustomButtom.h
//  testPlus
//
//  Created by 鹰眼 on 14/10/20.
//  Copyright (c) 2014年 QCloud. All rights reserved.
//

#import
#define KDefaultColor [UIColor colorWithRed:66/255.0 green:189/255.0 blue:146/255.0 alpha:1.0]
@interface CustomButtom : UIButton

-(void)setNumber:(NSString *)number andTitle:(NSString *)title;
@end

.m文件

//
//  CustomButtom.m
//  testPlus
//
//  Created by 鹰眼 on 14/10/20.
//  Copyright (c) 2014年 QCloud. All rights reserved.
//

#import "CustomButtom.h"

@implementation CustomButtom

-(instancetype)initWithFrame:(CGRect)frame
{
    self=[super initWithFrame:frame];
    if (self) {
        self.backgroundColor=[UIColor groupTableViewBackgroundColor];
        self.titleLabel.numberOfLines=0;
        self.titleLabel.textAlignment=NSTextAlignmentCenter;
        self.titleLabel.font=[UIFont systemFontOfSize:16.0];
        self.backgroundColor=[UIColor colorWithRed:53/255.0 green:65/255.0 blue:72/255.0 alpha:1.0];
    }
    return self;

}
-(void)setNumber:(NSString *)number andTitle:(NSString *)title
{
    [self setAttributedTitle:[self content:[NSString stringWithFormat:@"%@\n%@",number,title] colorString:number] forState:UIControlStateNormal];
}

-(NSAttributedString *)content:(NSString *)content colorString:(NSString *)search
{

    NSMutableAttributedString *attString = [[NSMutableAttributedString alloc] initWithString:content];
    [attString addAttribute:(NSString*)NSForegroundColorAttributeName value:[UIColor whiteColor] range:[content rangeOfString:content]];
    [attString addAttribute:(NSString*)NSForegroundColorAttributeName value:KDefaultColor range:[content rangeOfString:search]];
    return attString;
}
@end

通过这样就可以自定义拥有两个颜色的按钮了，以前都是用图片来实现，现在完全可以不用图片实现。