自定义UISearchBar

Question

我是Objective-C的新手，我试图删除UISearchBar的背景以使用我的一张图片作为textfield，但是一旦我将其删除，它会在后台显示UISegmentedControl。

for (UIView *subview in [projectSearch subviews]) { 
     if ([subview isKindOfClass:NSClassFromString(@"UISearchBarBackground")]) 
     { 
      [subview removeFromSuperview]; 
     } 

     if ([subview isKindOfClass:NSClassFromString(@"UISearchBarTextField")]) { 
      [(UITextField *)subview setBackground:[UIImage imageNamed:@"pg-14-search-field.png"]]; 
     } 
    } 

如何防止UISegmentedControl出现后，我删除了UISearchBar背景是什么？

Answer 1

for (UIView *view in self.searchBar.subviews) { 
    for (UIView *subview in view.subviews) { 
     if ([subview isKindOfClass:NSClassFromString(@"UISearchBarBackground")]) 
     { 
      [subview removeFromSuperview]; 
     } 

     if ([subview isKindOfClass:NSClassFromString(@"UISearchBarTextField")]) 
     { 

     } 
    } 
}