OC
- (void)viewWillDisappear:(BOOL)animated{ [self.navigationController.navigationBar setBackgroundImage:nil forBarMetrics:UIBarMetricsDefault]; [self.navigationController.navigationBar setShadowImage:nil];}
-(void)viewWillAppear:(BOOL)animated{ [super viewWillAppear:animated]; [self.navigationController.navigationBar setBackgroundImage:[UIImage new] forBarMetrics:UIBarMetricsDefault]; [self.navigationController.navigationBar setShadowImage:[UIImage new]];}
Swift
override func viewWillAppear(_ animated: Bool) { self.navigationController?.navigationBar .setBackgroundImage(nil, for: UIBarMetrics.default) self.navigationController?.navigationBar.shadowImage = UIImage() }
override func viewDidAppear(_ animated: Bool) { self.navigationController?.navigationBar .setBackgroundImage(UIImage(), for: UIBarMetrics.default) self.navigationController?.navigationBar.shadowImage = UIImage() }
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