iOS之去除navigation bar下面的黑色邊框

iOS之去除navigation bar下面的黑色邊框

[[UINavigationBar appearance] setBackgroundImage:[[UIImage alloc] init] forBarPosition:UIBarPositionAny barMetrics:UIBarMetricsDefault];//設置導航條顏色和界面顏色相同
[[UINavigationBar appearance] setShadowImage:[[UIImage alloc] init]]; //隱藏導航條Bar的黑線

 或者

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