ios - 如何快速访问另一个类的变量？

Question

我的UserSearchController中有一个搜索栏:

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
}()

我想从 UserSearchCv 访问并隐藏该搜索栏:

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
}

Answer 1

您需要通过对象引用而不是类名来访问该变量。试试这个-

userProfileController.searchBar.isHidden = true