UISearchBar删除iOS 4.1上的背景

Question

我正在尝试删除UISearchBar的背景以使其透明.我试过这些解决方案:

1.

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

2.

[[searchBar.subviews objectAtIndex:0] removeFromSuperview];

这两种方法都适用于iOS 4.3,但不适用于4.1.它显示黑色.如何在iOS 4.1上运行？我正在使用SDK 4.3.谢谢.

Answer 1

这应该工作:

[[searchBar.subviews objectAtIndex:0] removeFromSuperview];
[searchBar setBackgroundColor:[UIColor clearColor]];