iOS 更改搜索栏中的图标

Question

我正在尝试自定义搜索栏。我已经想出如何更改搜索栏中的背景和文本框，但我找不到更改栏中默认图标(放大镜图标)的方法。

有办法吗？

Answer 1

Open-source是你的 friend (就像 cocoa 一样，呵呵):

- (void)setSearchIconToFavicon {
  // Really a UISearchBarTextField, but the header is private.
  UITextField *searchField = nil;
  for (UIView *subview in searchBar.subviews) {
    if ([subview isKindOfClass:[UITextField class]]) {
      searchField = (UITextField *)subview;
      break;
    }
  }

  if (searchField) {  
    UIImage *image = [UIImage imageNamed: @"favicon.png"];
    UIImageView *iView = [[UIImageView alloc] initWithImage:image];
    searchField.leftView = iView;
    [iView release];
  }  
}

从 iOS 5.0 开始:

[self.testSearchBar setImage:[UIImage imageNamed: @"favicon.png"]
            forSearchBarIcon:UISearchBarIconSearch
                       state:UIControlStateNormal];