viewForHeaderInSection 复用问题

#import <UIKit/UIKit.h>

@interface XOSectionView : UITableViewHeaderFooterView

@property NSUInteger section;
@property (nonatomic, copy) NSString *titleName;

@property (nonatomic, weak) UITableView *tableView;

+ (CGFloat)getSectionHeight;

@end

#import "XOSectionView.h"

#define APP_SCREEN_WIDTH [UIScreen mainScreen].bounds.size.width   // 屏幕的宽度
@interface XOSectionView()

@property (nonatomic, weak) UILabel *titleLabel;

@end

@implementation XOSectionView

-(instancetype)initWithReuseIdentifier:(NSString *)reuseIdentifier {

if (self = [super initWithReuseIdentifier:reuseIdentifier]) {

UILabel *titleLabel = [[UILabel alloc]initWithFrame:CGRectMake(10, 5, APP_SCREEN_WIDTH - 20, 20)];
titleLabel.textColor = [UIColor colorWithRed:0.35f green:0.35f blue:0.35f alpha:1.00f];
titleLabel.font = [UIFont systemFontOfSize:15.0f];
_titleLabel = titleLabel;
self.backgroundColor = [UIColor whiteColor];
//        [self addSubview:titleLabel];
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, 30)];
view.backgroundColor = [UIColor whiteColor];
[view addSubview:titleLabel];
[self addSubview:view];

}
return self;

}

- (void)setTitleName:(NSString *)titleName {

_titleLabel.text = titleName;
}

+ (CGFloat)getSectionHeight
{
return 44;
}

- (void)setFrame:(CGRect)frame{
//    NSLog(@"_______ frame = %@",NSStringFromCGRect(frame));

CGRect sectionRect = [self.tableView rectForSection:self.section];
CGRect newFrame = CGRectMake(CGRectGetMinX(frame), CGRectGetMinY(sectionRect), CGRectGetWidth(frame), CGRectGetHeight(frame)); [super setFrame:newFrame];
}

@end

#import "ViewController.h"
#import "SubViewController.h"
#import "XOSectionView.h"

static NSString *SectionViewID = @"XOSectionView";
@interface ViewController () <UITableViewDataSource, UITableViewDelegate>
@property (weak, nonatomic) IBOutlet UITableView *tableView;

- (IBAction)btnClick:(UIButton *)sender;

@end

@implementation ViewController

- (void)viewDidLoad {
[super viewDidLoad];

[self.tableView registerClass:[XOSectionView class] forHeaderFooterViewReuseIdentifier:SectionViewID];

// Do any additional setup after loading the view, typically from a nib.
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return 5;
}

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 5;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

static NSString *cellName = @"cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellName];
if (!cell) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellName];
}
cell.textLabel.text = @"test";
return cell;
}

- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {

XOSectionView *sectionView = [tableView dequeueReusableHeaderFooterViewWithIdentifier:SectionViewID];

if (sectionView) {

if (section == 1) {
sectionView.titleName = @"城市服务";
} else {
sectionView.titleName = @"联盟商家";
}

sectionView.tableView = self.tableView;
sectionView.section = section;
}

return sectionView;
}

- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

- (IBAction)btnClick:(UIButton *)sender {

SubViewController *subVC = [[SubViewController alloc] init];
subVC.view.backgroundColor = [UIColor whiteColor];
[self.navigationController pushViewController:subVC animated:true];
}
@end