iphone - 从 uinavigationbar 中删除子视图

Question

嗨要从 UINavigation 栏中删除子视图，我正在使用以下代码。我在导航栏中将标签、按钮和 imageVIew 作为子视图。

   for (UIView *view in self.navigationController.navigationBar.subviews) {


    [view removeFromSuperview];
}

当我运行它时，它正在删除我添加为的导航栏的背景图像

     [self.navigationController.navigationBar setBackgroundImage:[UIImagem imageNamed:@"header-background"] forBarMetrics:UIBarMetricsDefault];

after removing subViews i am adding the background agin,But it is not adding.

Is there any way to remove only subViews of navigation bar without removing the background.

Answer 1

一个快速的选项是向tag要删除的视图的属性添加一个值，并在删除子视图之前检查它，例如，假设您向子视图添加一个非零值：

for (UIView *view in self.navigationController.navigationBar.subviews) {
    if (view.tag != 0) {
        [view removeFromSuperview];
    }
}

Answer 2

尝试这个，

for (UIView *view in self.navigationController.navigationBar.subviews) {

if([view isKindOfClass:[UIImageView class]])
{
  //change your bar image
 }
else
 {
[view removeFromSuperview];
 }
 }