CGRect rect = CGRectMake(0, 0, 100, 50); 
  CGSize radio = CGSizeMake(5, 5);//圆角尺寸 
  UIRectCorner corner = UIRectCornerTopLeft|UIRectCornerTopRight;//这只圆角位置 
  UIBezierPath *path = [UIBezierPath bezierPathWithRoundedRect:rect byRoundingCorners:corner cornerRadii:radio]; 
  CAShapeLayer *masklayer = [[CAShapeLayer alloc]init];//创建shapelayer 
  masklayer.frame = button.bounds; 
  masklayer.path = path.CGPath;//设置路径 
  button.layer.mask = masklayer; 

[self.navigationController.navigationBar setBackgroundImage:[UIImage new] 
forBarMetrics:UIBarMetricsDefault];

//给navigationBar设置一个空的背景图片即可实现透明，而且标题按钮都在

self.navigationController.navigationBar.shadowImage = [UIImage new]; 
 //其实这个线也是image控制的。设为空即可 

//navigationBar是一个复合视图，它是有许多个控件组成的，那么我们就可以从他的内部入手 
[[self.navigationController.navigationBar subviews] objectAtIndex:0].alpha = 0;

//这里可以根据scrollView的偏移量来设置alpha就实现了渐变透明的效果 

//UIColorWithHexRGB( )这个方法是自己定义的，这里只需要给个颜色就好了 
[[UINavigationBar appearance] setBarTintColor:UIColorWithHexRGB(0xfefefe)]; 
 
  [[UINavigationBar appearance] setTitleTextAttributes:@{NSFontAttributeName:[UIFontboldSystemFontOfSize:18],NSForegroundColorAttributeName:UIColorWithHexRGB(0xfe6d27)}]; 
 
 
  [[UITabBarItem appearance] setTitleTextAttributes:@{NSFontAttributeName : [UIFontboldSystemFontOfSize:10],NSForegroundColorAttributeName : UIColorWithHexRGB(0x666666)}forState:UIControlStateNormal]; 
 
 
 [[UITabBarItem appearance] setTitleTextAttributes:@{NSFontAttributeName : [UIFont boldSystemFontOfSiz 

- (void)viewWillAppear:(BOOL)animated{ 
 
  [super viewWillAppear:animated]; 
 
  [self.navigationController setNavigationBarHidden:NO animated:YES]; 
 
} 

if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) { 
//需要遵循一下手势的代理    

self.navigationController.interactivePopGestureRecognizer.delegate = self; 
 
    self.navigationController.interactivePopGestureRecognizer.enabled = YES; 
 
  } 

UIView *webBrowserView = self.webView.scrollView.subviews[0];//拿到webView的webBrowserView 
  self.backHeadImageView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, kScreenWidth,kScreenWidth*2/3.0)]; 
  [_backHeadImageView sd_setImageWithURL:[NSURL URLWithString:self.imageUrl] placeholderImage:[UIImageimageNamed:@"placeholderImage"]]; 
  [self.webView insertSubview:_backHeadImageView belowSubview:self.webView.scrollView]; 
 
  //把backHeadImageView插入到webView的scrollView下面 
   CGRect frame = self.webBrowserView.frame; 
  frame.origin.y = CGRectGetMaxY(_backHeadImageView.frame); 
 
  self.webBrowserView.frame = frame; 
 
  //更改webBrowserView的frame向下移backHeadImageView的高度，使其可见 

DetailViewController *detailVC = [[DetailViewController alloc]init]; 
  //UIModalTransitionStyleFlipHorizontal 翻转 
  //UIModalTransitionStyleCoverVertical 底部滑出 
  //UIModalTransitionStyleCrossDissolve 渐显 
  //UIModalTransitionStylePartialCurl 翻页 
  detailVC.modalTransitionStyle = UIModalTransitionStylePartialCurl; 
 
  [self presentViewController:detailVC animated:YES completion:nil]; 

UIImage *image = [UIImage imageNamed:filename]; 
CGImageRef imageRef = image.CGImage; 
CGRect rect = CGRectMake(origin.x, origin.y ,size.width, size.height); 
//这里的宽高是相对于图片的真实大小 
 
//比如你的图片是400x400的那么（0，0，400，400）就是图片的全尺寸，想取哪一部分就设置相应坐标即可 
 
CGImageRef imageRefRect = CGImageCreateWithImageInRect(imageRef, rect); 
 
UIImage *imageRect = [[UIImage alloc] initWithCGImage:imageRefRect]; 

UIImage *image = [UIImage imageNamed:@"playing"]; 
  _layerView.layer.contents = (__bridge id)image.CGImage; 
_layerView.layer.contentsCenter = CGRectMake(0.25, 0.25, 0.5, 0.5); 
//同样可以设置显示的图片范围 
//不过此处略有不同，这里的四个值均为0-1之间；对应的依然是写x,y,widt,height 

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath*)indexPath{ 

  NSArray *array = tableView.indexPathsForVisibleRows; 
 
  NSIndexPath *firstIndexPath = array[0]; 
  //设置anchorPoint 

  cell.layer.anchorPoint = CGPointMake(0, 0.5); 
   //为了防止cell视图移动，重新把cell放回原来的位置 
  cell.layer.position = CGPointMake(0, cell.layer.position.y);  
 
  //设置cell 按照z轴旋转90度，注意是弧度 
  if (firstIndexPath.row < indexPath.row) { 
       cell.layer.transform = CATransform3DMakeRotation(M_PI_2, 0, 0, 1.0); 
 
  }else{ 
 
    cell.layer.transform = CATransform3DMakeRotation(- M_PI_2, 0, 0, 1.0); 
 
  }