iOS隐藏导航条1px的底部横线

标签：uiimage   图片   ios7   ios   ios开发   

默认情况下会有这条线

第一种方法：

UINavigationBar *navigationBar = self.navigationController.navigationBar;
// white.png图片自己下载个纯白色的色块，或者自己ps做一个
[navigationBar setBackgroundImage:[UIImage imageNamed:@"white.png"]
                   forBarPosition:UIBarPositionAny
                       barMetrics:UIBarMetricsDefault];
[navigationBar setShadowImage:[UIImage new]];

第二种方法：1）声明UIImageView变量,存储底部横线

@implementation MyViewController {
    UIImageView *navBarHairlineImageView;
}

2）在viewDidLoad中加入：

navBarHairlineImageView = [self findHairlineImageViewUnder:navigationBar];

3）实现找出底部横线的函数

- (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;
}

4）最后在viewWillAppear，viewWillDisappear中处理

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

iOS隐藏导航条1px的底部横线

标签：uiimage   图片   ios7   ios   ios开发   

原文地址：http://blog.csdn.net/kevinpake/article/details/45741077