修改navigationController的背景色和隐藏navigationController下黑线

一.修改背景色

self.navigationController.navigationBar.barTintColor =[UIColor colorWithRed:0.980 green:0.979 blue:0.000 alpha:1.000];

二.隐藏黑线

- (void)viewDidLoad {

[super viewDidLoad];

[self findHairlineImageViewUnder:self.navigationController.navigationBar].hidden = YES;

}

(UIImageView * )findHairlineImageViewUnder:(UIView * )view {

if ([view isKindOfClass:UIImageView.class] && view.bounds.size.height <= 1.0) {

return (UIImageView *)view;

}

for (UIView *subview in view.subviews) {

UIImageView *imageView = [self findHairlineImageViewUnder:subview];

if (imageView) {

return imageView;
}

}

return nil;

}