在自定义cell头部控件UITableViewHeaderFooterView（和自定义cell的方法几乎一样）时，出现了头部控件子控件不显示的问题。
注意和自定义cell的区别。
.h文件
1 #import <UIKit/UIKit.h>
2 #import "CHModleGroup.h"
3 @interface HeaderView : UITableViewHeaderFooterView
4 @property (nonatomic, weak) UILabel *count;
5 @property (nonatomic, weak) UIButton *name;
6 + (instancetype)headerViewWithTableView:(UITableView *)tableView;
7
8 @property (nonatomic, strong) CHModleGroup *group;
9
10 @end
.m文件
1 #import "HeaderView.h"
2
3 @implementation HeaderView
4 + (instancetype)headerViewWithTableView:(UITableView *)tableView{
5 static NSString *ID = @"header";
6 HeaderView *header = [tableView dequeueReusableHeaderFooterViewWithIdentifier:ID];
7 if (header == nil) {
8 header = [[HeaderView alloc]initWithReuseIdentifier:ID];
9 }
10 return header;
11 }
12
13 - (id)initWithReuseIdentifier:(NSString *)reuseIdentifier
14 {
15 if (self = [super initWithReuseIdentifier:reuseIdentifier]) {
16 UIButton *nameView = [UIButton buttonWithType:UIButtonTypeCustom];
17 // 背景图片
18 [nameView setBackgroundImage:[UIImage imageNamed:@"发布新闻背景副本"] forState:UIControlStateNormal];
19 [nameView setBackgroundImage:[UIImage imageNamed:@"welcome3"] forState:UIControlStateHighlighted];
20 // 设置按钮内部的左边箭头图片
21 [nameView setImage:[UIImage imageNamed:@"buddy_header_arrow副本"] forState:UIControlStateNormal];
22 [nameView setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
23 // 设置按钮的内容左对齐
24 nameView.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;
25 // 设置按钮的内边距
26 // nameView.imageEdgeInsets
27 nameView.titleEdgeInsets = UIEdgeInsetsMake(0, 10, 0, 0);
28 nameView.contentEdgeInsets = UIEdgeInsetsMake(0, 10, 0, 0);
29 [self.contentView addSubview:nameView];
30 self.nameView = nameView;
31
32
33
34 // 2.添加好友数
35 UILabel *countView = [[UILabel alloc] init];
36 countView.textAlignment = NSTextAlignmentRight;
37 countView.textColor = [UIColor grayColor];
38 [self.contentView addSubview:countView];
39 self.countView = countView;
40
41
42 }
43 return self;
44 }
45
46 /**
47 * 当一个控件的frame发生改变的时候就会调用
48 *
49 * 一般在这里布局内部的子控件(设置子控件的frame)
50 */
51 - (void)layoutSubviews
52 {
53 //一定要调用super的方法
54 [super layoutSubviews];
55
56 // 1.设置按钮的frame
57 self.nameView.frame = self.bounds;
58
59 // 2.设置数的frame
60 CGFloat countY = 0;
61 CGFloat countH = self.frame.size.height;
62 CGFloat countW = 150;
63 CGFloat countX = self.frame.size.width - 10 - countW;
64 self.countView.frame = CGRectMake(countX, countY, countW, countH);
65 }
66
67 //设置数据
68 - (void)setGroup:(MJFriendGroup *)group
69 {
70 _group = group;
71
72 // 1.设置按钮文字(组名)
73 [self.name setTitle:group.name forState:UIControlStateNormal];
74
75 // 2.设置数量(总数)
76 self.count.text = [NSString stringWithFormat:@"%lu", friends.count];
77 }
78
79
80 @end
