navigationController 去掉背景图片、去掉底部线条

  //去掉背景图片  [self.navigationController.navigationBar setBackgroundImage:[[UIImage alloc] init] forBarMetrics:UIBarMetricsDefault];  //去掉底部线条  [self.navigationController.navigationBar setShadowImage:[[UIImage alloc] init]];

原标题：navigationController 去掉背景图片、去掉底部线条

关键词：图片