iOS隐藏导航栏底部灰线

首先创建

p.p1 { margin: 0.0px 0.0px 0.0px 0.0px; font: 18.0px Menlo; color: #de38a5 }
span.s1 { }
span.s2 { color: #ffffff }

@interface TestVC()

p.p1 { margin: 0.0px 0.0px 0.0px 0.0px; font: 18.0px Menlo; color: #ffffff }
p.p2 { margin: 0.0px 0.0px 0.0px 0.0px; font: 18.0px Menlo; color: #ffffff; min-height: 21.0px }
span.s1 { }
span.s2 { color: #00b1ff }

{

UIImageView *navBarHairlineImageView;

}

- (void)viewWillAppear:(BOOL)animated

{

[super viewWillAppear:animated];

navBarHairlineImageView.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;

}在viewDidLoad中加入

p.p1 { margin: 0.0px 0.0px 0.0px 0.0px; font: 18.0px Menlo; color: #08fa95 }
span.s1 { }
span.s2 { color: #ffffff }
span.s3 { color: #de38a5 }
span.s4 { color: #00b1ff }

navBarHairlineImageView =[self findHairlineImageViewUnder:self.navigationController.navigationBar];

然后就完成了,可以运行看效果了

p.p1 { margin: 0.0px 0.0px 0.0px 0.0px; font: 18.0px Menlo; color: #ffffff }
span.s1 { }
p.p1 { margin: 0.0px 0.0px 0.0px 0.0px; font: 18.0px Menlo; color: #ffffff }
p.p2 { margin: 0.0px 0.0px 0.0px 0.0px; font: 18.0px Menlo; color: #08fa95 }
p.p3 { margin: 0.0px 0.0px 0.0px 0.0px; font: 18.0px Menlo; color: #00b1ff }
p.p4 { margin: 0.0px 0.0px 0.0px 0.0px; font: 18.0px Menlo; color: #de38a5 }
span.s1 { }
span.s2 { color: #de38a5 }
span.s3 { color: #00b1ff }
span.s4 { color: #ffffff }
span.s5 { color: #8b87ff }
span.s6 { color: #08fa95 }