我有一个搜索栏,我UserSearchController:如何在swift中从另一个类访问变量?
class UserSearchController: UICollectionViewController, UICollectionViewDelegateFlowLayout,UISearchBarDelegate, UISearchDisplayDelegate {
lazy var searchBar: UISearchBar = {
let sb = UISearchBar()
sb.placeholder = "Search"
sb.barTintColor = UIColor.gray
UITextField.appearance(whenContainedInInstancesOf: [UISearchBar.self]).backgroundColor = UIColor.rgb(red: 230, green: 230, blue: 230, alpha: 1)
sb.keyboardAppearance = .dark
sb.delegate = self
return sb
}()
我想访问和隐藏从UserSearchCv是搜索栏:
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
let user = filteredUsers[indexPath.item]
print(user.username)
let userProfileController = UserProfileController(collectionViewLayout: UICollectionViewFlowLayout())
(superview?.next as? UIViewController)?.navigationController?.pushViewController(userProfileController, animated: true)
UserSearchController.searchBar.isHidden = true //Something like this but it compiles an error
}
这可能会帮助你。 https://stackoverflow.com/documentation/ios/434/passing-data-between-view-controllers/2520/using-the-delegate-pattern-passing-data-back#t=201708291155386938448 –
UserSearchController()。searchBar .isHidden = true'应该编译,因为它正在创建控制器的一个实例。你这样做的方式是在UserSearchController类本身,而不是类的一个实例。您需要对“UserSearchController”实例的引用。 –
你是否在UserSearchCv中声明了UserSearchController的实例?使用该实例 – 3stud1ant3