如何删除自定义导航栏图像？
我使用下面的代码来设置导航栏的背景。它有效，但由于我不希望它出现在所有导航栏上，因此我必须在离开当前视图之前将其删除。怎么办呢？
- (void)viewDidLoad
{
UIImageView *nav_img = [[UIImageViw alloc] initWithImage:[UIImage imageNamed:@"header-background.png"]];
nav_img.frame = CGRectMake(0.0,0.0,320.0,44.0);
[self.navigationController.navigationBar insertSubView:nav_img atIndex:0];
[nav_img release];
}
感谢您的帮助，
斯蒂芬
I'm using the code below to set a background to a navigation bar. It worked but as I don't want it on all navigation bars, I have to remove it before leaving the current view. How to do it ?
- (void)viewDidLoad
{
UIImageView *nav_img = [[UIImageViw alloc] initWithImage:[UIImage imageNamed:@"header-background.png"]];
nav_img.frame = CGRectMake(0.0,0.0,320.0,44.0);
[self.navigationController.navigationBar insertSubView:nav_img atIndex:0];
[nav_img release];
}
Thx for helping,
Stephane
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添加标签时，将标签添加到图像视图。使用
viewWithTag:方法获取指向图像视图的指针，并在viewWillAppear和中设置图像视图的方法。hidden属性viewWillDisappearAdd a tag to the image view as you add it. Use the
viewWithTag:method to get a pointer to the image view and set thehiddenproperty of the image view in yourviewWillAppearandviewWillDisappearmethods.