UISearchDisplayController 自定义取消按钮标题

#pragma UISearchDisplayDelegate

-(void)searchDisplayControllerWillBeginSearch:(UISearchDisplayController *)controller{

[mySearchBar
setShowsCancelButton:YES
animated:NO];

UIView *topView = controller.searchBar.subviews[0];

for (UIView *subView
in topView.subviews) {

if ([subView
isKindOfClass:NSClassFromString(@"UINavigationButton")]) {

UIButton *cancelButton = (UIButton*)subView;

[cancelButton setTitle:@"取消"
forState:UIControlStateNormal];
}
}
}