默认情况下会有这条线
images/loading.gif' data-original="http://blog.it985.com/wp-content/uploads/2015/04/%E5%B1%8F%E5%B9%95%E6%88%AA%E5%9B%BE-2015%E5%B9%B44%E6%9C%889%E6%97%A5-at-%E4%B8%8B%E5%8D%889.34.31-163x300.png" width="163" height="300" />
第一种方法:
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| 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 ]];
|
运行后效果如下(此处原有的灰色背景色会被white.png代替):
PS:这是唯一一个隐藏这条线的官方用法,但是有一个缺陷-删除了translucency(半透明)
第二种方法:
1)声明UIImageView变量,存储底部横线
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| @implementation MyViewController {
UIImageView *navBarHairlineImageView;
}
|
2)在viewDidLoad中加入:
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| navBarHairlineImageView = [ self findHairlineImageViewUnder:navigationBar];
|
3)实现找出底部横线的函数
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| - (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
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| - ( void )viewWillAppear:( BOOL )animated {
[ super viewWillAppear:animated];
navBarHairlineImageView.hidden = YES ;
}
- ( void )viewWillDisappear:( BOOL )animated {
[ super viewWillDisappear:animated];
navBarHairlineImageView.hidden = NO ;
}
|
效果如下:
PS:第二种方法可以保持bar的translucent
本文出自 IT985博客
本文永久地址:http://blog.it985.com/9808.html
原标题:【转】iOS隐藏导航条1px的底部横线
关键词:IOS