ios彩票标题按钮（左文字右图片)

 1 #import <UIKit/UIKit.h>
 2 
 3 @interface NJTitleButton : UIButton
 4 
 5 @end
 6 
 7 
 8 #import "NJTitleButton.h"
 9 
10 @interface NJTitleButton ()
11 @property (nonatomic, strong) UIFont *myFont;
12 @end
13 
14 @implementation NJTitleButton
15 
16 - (id)initWithCoder:(NSCoder *)aDecoder
17 {
18     
19     if (self = [super initWithCoder:aDecoder]) {
20         [self setup];
21     }
22     return self;
23 }
24 
25 - (id)initWithFrame:(CGRect)frame
26 {
27     if (self = [super initWithFrame:frame]) {
28          [self setup];
29     }
30     return self;
31 }
32 - (void)setup
33 {
34     // 记录按钮标题的字体
35     self.myFont = [UIFont systemFontOfSize:15];
36     // 设置标题的字体
37     self.titleLabel.font = self.myFont;
38     // 设置按钮的图片显示的内容默认为剧中(为了不拉伸)
39     self.imageView.contentMode = UIViewContentModeCenter;
40 }
41 
42 // 用于返回按钮上标题的位置, 传入按钮的rect
43 - (CGRect)titleRectForContentRect:(CGRect)contentRect
44 {
45     CGFloat titleX = 0;
46     CGFloat titleY = 0;
47     CGFloat titleH = contentRect.size.height;
48     // 获取当前按钮上的文字
49 //    [self titleForState:UIControlStateNormal];
50     NSString *title = self.currentTitle;
51     CGSize maxSize = CGSizeMake(MAXFLOAT, MAXFLOAT);
52     NSMutableDictionary *md = [NSMutableDictionary dictionary];
53     // 死循环的原因是self.titleLabel需要访问titleLabel, 而self.titleLabel又需要调用当前方法获取title的范围, 所有死循环
54 //    md[NSFontAttributeName] = self.titleLabel.font;
55     NSLog(@"%@", self.myFont);
56     md[NSFontAttributeName] = self.myFont;
57     
58     // 计算文字的范围
59     CGFloat titleW =  0;
60     // 判断是否是xcode5 , 如果是就编译一下代码, 如果不是就不编译
61     CGRect titleRect = [title boundingRectWithSize:maxSize options:NSStringDrawingUsesLineFragmentOrigin attributes:md context:nil];
62     titleW = titleRect.size.width;
63     
64     return CGRectMake(titleX, titleY, titleW, titleH);
65 }
66 - (CGRect)imageRectForContentRect:(CGRect)contentRect
67 {
68     
69     CGFloat imageY = 0;
70     CGFloat imageH = contentRect.size.height;
71     CGFloat imageW = 16;
72     // 图片的X = 按钮的宽度 - 图片宽度
73     CGFloat imageX = contentRect.size.width - imageW;
74     return CGRectMake(imageX, imageY, imageW, imageH);
75 }
76 @end