Enable the Return key in a UISearchBar even when its text is empty.

SearchBarStyler.h

// By Henrik Nyh <http://henrik.nyh.se> 2010-06-12 under the MIT license.

#import <Foundation/Foundation.h>

@interface SearchBarStyler : NSObject {
}

+(void)enableReturnKeyWithNoText:(UISearchBar *)searchBar;

@end

SearchBarStyler.m

#import "SearchBarStyler.h"

@implementation SearchBarStyler

+(void)enableReturnKeyWithNoText:(UISearchBar *)searchBar {

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

  if (searchField) {
    searchField.enablesReturnKeyAutomatically = NO;
  }
}