iOS隐藏导航栏底部的线条& UINavigationBar小技巧

隐藏导航栏底部的线条

转载：https://www.jianshu.com/p/aa547432eae0

方法1 (单页面设置)

 [self.navigationController.navigationBar setBackgroundImage:[UIImage new] forBarMetrics:UIBarMetricsDefault]; [self.navigationController.navigationBar setShadowImage:[UIImage new]]; 如果不想影响其他页面的导航透明度，viewWillDisappear将其设置为nil即可: [self.navigationController.navigationBar setBackgroundImage:nil forBarMetrics:UIBarMetricsDefault]; [self.navigationController.navigationBar setShadowImage:nil]; 

方法2(全局设置)

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

方法3

self.navigationController.navigationBar.clipsToBounds = YES; 

设置导航栏底部线条颜色的代码：

UINavigationBar *navigationBar = self.navigationController.navigationBar; [navigationBar setBackgroundImage:[[UIImage alloc] init] forBarPosition:UIBarPositionAny barMetrics:UIBarMetricsDefault]; //此处使底部线条颜色为红色 [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 

修复navigationController侧滑关闭失效的问题

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

隐藏返回按钮后面的文字

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

参考文章:
http://www.jianshu.com/p/f0d3df54baa6
http://stackoverflow.com/questions/19226965/how-to-hide-ios7-uinavigationbar-1px-bottom-line
http://stackoverflow.com/questions/22090314/restore-navigationbar-background-image-after-setting-it-to-uiimage-new