@interface ViewController ()<UITableViewDelegate, UITableViewDataSource>

@property (nonatomic, strong) UITableView *tableView;

@end

define kRowH 40

define kSectionH 50

@implementation ViewController

• (void)viewDidLoad {
  [super viewDidLoad];
  self.title = @"年后";
  self.navigationController.navigationBar.translucent = NO;
  self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"Yosemite"]];
  self.navigationController.navigationBar.tintColor = [UIColor blackColor];
  self.navigationController.navigationBar.barStyle = UIBarStyleBlack;

  _tableView = [[UITableView alloc] initWithFrame:(CGRect){CGPointZero,{CGRectGetWidth(self.view.frame),CGRectGetHeight(self.view.frame)-64}}];
  _tableView.delegate = self;
  _tableView.dataSource = self;
  _tableView.rowHeight = kRowH;
  _tableView.sectionHeaderHeight = kSectionH;
  _tableView.tableFooterView = [UIView new];
  _tableView.backgroundView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"iphone6"]];
  [self.view addSubview:_tableView];
  }

pragma mark - TableView

• (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
  return 12;
  }
• (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
  UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"12"];
  if (!cell) {
  cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"12"];
  }
  cell.textLabel.text = [NSString stringWithFormat:@"%@-%@",@(indexPath.section),@(indexPath.row)];
  return cell;
  }
• (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
  return [NSString stringWithFormat:@"%@-------------",@(section)];
  }

pragma mark - ScrollView

• (void)scrollViewDidScroll:(UIScrollView *)scrollView {
  CGFloat sectionHeaderHeight = kSectionH;
  if (scrollView.contentOffset.y<=sectionHeaderHeight&&scrollView.contentOffset.y>=0) {
  scrollView.contentInset = UIEdgeInsetsMake(-scrollView.contentOffset.y, 0, 0, 0);
  } else if (scrollView.contentOffset.y>=sectionHeaderHeight) {
  scrollView.contentInset = UIEdgeInsetsMake(-sectionHeaderHeight, 0, 0, 0);
  }

  if (ABS(scrollView.contentOffset.y) < 30) {
  if ([scrollView isKindOfClass:[UITableView class]]) {
  CGFloat scale = 1-ABS(scrollView.contentOffset.y)/30;
  _tableView.backgroundView.transform = CGAffineTransformMakeScale(scale, scale);
  }
  }

}

• (void)scrollViewDidEndDecelerating:(UIScrollView )scrollView {
  if (scrollView.contentSize.height < CGRectGetHeight(scrollView.frame)) {
  [scrollView setContentOffset:CGPointZero animated:NO];
  }
  NSLog(@"*********\noffset is %f,\n height is %f\n,**\n ivewH is %f",scrollView.contentOffset.y,scrollView.contentSize.height,scrollView.frame.size.height);
  }

• (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate {
  if (!decelerate) {
  if (scrollView.contentSize.height < CGRectGetHeight(scrollView.frame)) {
  [scrollView setContentOffset:CGPointZero animated:YES];
  }
  }

  NSLog(@"*********\noffset is %f,\n height is %f\n,***\n ivewH is %f",scrollView.contentOffset.y,scrollView.contentSize.height,scrollView.frame.size.height);
  }