iOS中修改导航栏的各种样式

self.navigationController.navigationBar.translucent = YES;

self.navigationController.navigationBar.titleTextAttributes = @{NSForegroundColorAttributeName: YK1f1f1f, NSFontAttributeName: [UIFont fontWithName:@"ArialMT" size:18]};

[self.navigationController.navigationBar setTintColor:[UIColor whiteColor]];

[[UINavigationBar appearance] setBarTintColor:[UIColor yellowColor]];

[self.navigationController.navigationBar setBackgroundImage:[UIImageimageNamed:@"navigationImage.png"] forBarMetrics:UIBarMetricsDefault];

{
UIImageView *navBarHairlineImageView;  // 声明UIImageView变量,存储底部横线
}

- (void)viewDidLoad
{
[super viewDidLoad];

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

}

- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
navBarHairlineImageView.hidden = YES;
}

- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
navBarHairlineImageView.hidden = NO;
}

// 实现找出底部横线的函数
1. (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;
}

[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleDefault];