iOS去除導航欄和tabbar的橫線

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

導航透明設置

　 [self.navigationController.navigationBar setTranslucent:NO];

tab

[self.tabBarController.tabBar setBackgroundImage:[UIImage new]]; [self.tabBarController.tabBar setShadowImage:[UIImage new]];