修改searchBar的返回按钮的显示文字

#pragma mark 搜索框的代理方法，搜索输入框获得焦点（聚焦）

- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar

{

[searchBar setShowsCancelButton:YES animated:YES];

for(id cc in [searchBar.subviews[0] subviews])

{

if([cc isKindOfClass:[UIButton class]])

{

UIButton *cancelButton = (UIButton *)cc;

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

[cancelButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];

        // 修改文字颜色

            [cancelButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];

            [cancelButton setTitleColor:[UIColor whiteColor] forState:UIControlStateHighlighted];

            // 修改按钮背景

            [cancelButton setBackgroundImage:[UIImage resizedImage:@"login_btn_login.png"] forState:UIControlStateNormal];

            [cancelButton setBackgroundImage:nil forState:UIControlStateHighlighted];

}

}

}