iOS10 去掉导航栏分割线

if ([self.navigationController.navigationBar respondsToSelector:@selector( setBackgroundImage:forBarMetrics:)]) { NSArray *list=self.navigationController.navigationBar.subviews; for (id obj in list) { if ([UIDevice currentDevice].systemVersion.floatValue >= 10.0) {//10.0的系统字段不一样 UIView *view = (UIView*)obj; for (id obj2 in view.subviews) { if ([obj2 isKindOfClass:[UIImageView class]]) { UIImageView *image = (UIImageView*)obj2; image.hidden = YES; } } } } }