UINavigationController--隱藏下方橫線

隱藏導航欄底部的線條
方法1 (單頁面設置)

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

 
若是不想影響其餘頁面的導航透明度，viewWillDisappear將其設置爲nil便可:
 
 

[self.navigationController.navigationBar setBackgroundImage:nil forBarMetrics:UIBarMetricsDefault];
[self.navigationController.navigationBar setShadowImage:nil];

方法2(全局設置)

[[UINavigationBar appearance] setBackgroundImage:[[UIImage alloc] init] forBarMetrics:UIBarMetricsDefault];
[[UINavigationBar appearance] setShadowImage:[[UIImage alloc] init]];

方法3

self.navigationController.navigationBar.clipsToBounds = YES;

 
設置導航欄底部線條顏色的代碼：

UINavigationBar *navigationBar = self.navigationController.navigationBar; 
[navigationBar setBackgroundImage:[[UIImage alloc] init] forBarPosition:UIBarPositionAny barMetrics:UIBarMetricsDefault]; //此處使底部線條顏色爲紅色
[navigationBar setShadowImage:[UIImage imageWithColor:[UIColor redColor]]];

@implementation UIImage (ColorImage)

+ (UIImage *)imageWithColor:(UIColor *)color{ 
  CGRect rect = CGRectMake(0.0f, 0.0f, 1.0f, 1.0f); 
  UIGraphicsBeginImageContext(rect.size); 
  CGContextRef context = UIGraphicsGetCurrentContext(); 
  CGContextSetFillColorWithColor(context, [color CGColor]); 
  CGContextFillRect(context, rect); 
  UIImage *image = UIGraphicsGetImageFromCurrentImageContext(); 
  UIGraphicsEndImageContext(); return image;
}
@end

修復navigationController側滑關閉失效的問題

self.navigationController.interactivePopGestureRecognizer.delegate = (id)self;

 
隱藏返回按鈕後面的文字

 [[UIBarButtonItem appearance] setBackButtonTitlePositionAdjustment:UIOffsetMake(0, -60)
                                                         forBarMetrics:UIBarMetricsDefault];

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做者：wuWuJK 
來源：CSDN 
原文：https://blog.csdn.net/wujakf/article/details/78584325 
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