iOS实现视频播放全屏和取消全屏功能

/// 自定义的那个视频类
///@property (nonatomic,strong) VedioPlayer *vedioPlayer;

///视频展示的view 的父视图
@property (nonatomic,strong) UIView *currentSuperView;

///取消全屏
- (void)fullScreen:(UIBarButtonItem *)btnItem{
 ///视频展示的view 的父视图
 self.currentSuperView = self.superview;
 ///拿到window
 UIWindow *window = [UIApplication sharedApplication].keyWindow;
 ///全屏vc初始化
 VedioPlayerViewController *vc = [VedioPlayerViewController new];
 ///判断是否由导航控制器控制
 if ([window.rootViewController isKindOfClass:[UINavigationController class]]) {
  ///拿到导航控制器控制
  UINavigationController *nvc = (UINavigationController *)window.rootViewController;
  ///把全屏视频的vc推进去
  [nvc pushViewController:vc animated:NO];
  ///重新设置视频大小
  [self setFrame:CGRectMake(0, 0, vc.view.frame.size.width, vc.view.frame.size.height)];
  
  //全屏后 按钮绑定取消全屏方法
  [self.fullScreenItem setAction:@selector(cancelFullScreen:)];
   
  ///vc.cOnciseVedioPlayer= self;
  ///添加视频到全屏vc
  [vc.view addSubview:self];
 
 ///自动播放
 [vc.conciseVedioPlayer startOrStop];
  
 }
 
}

- (void)cancelFullScreen:(UIBarButtonItem *)btnItem{
 
 ///拿到window
 UIWindow *window = [UIApplication sharedApplication].keyWindow;
 ///判断是否由导航控制器控制
 if ([window.rootViewController isKindOfClass:[UINavigationController class]]) {
  ///拿到导航控制器控制
  UINavigationController *nvc = (UINavigationController *)window.rootViewController;
  ///推出一个vc，自然就回到原来的视图了
  [nvc popViewControllerAnimated:NO];
  ///把视频添加到原本的视图
  [self.currentSuperView addSubview:self];
  ///重新设置视频大小
  [self setFrame:self.currentFrame];
  
  //取消全屏后 按钮重新绑定全屏方法
  [self.fullScreenItem setAction:@selector(fullScreen:)];
   ///自动播放
  [self startOrStop];
 }
 
}