我有一個搜索欄,我UserSearchController:如何在swift中從另一個類訪問變量?
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
}()
我想訪問和隱藏從UserSearchCv是搜索欄:
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
}
這可能會幫助你。 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'應該編譯,因爲它正在創建控制器的一個實例。你這樣做的方式是在UserSearchController類本身,而不是類的一個實例。您需要對「UserSearchController」實例的引用。 –
你是否在UserSearchCv中聲明瞭UserSearchController的實例?使用該實例 – 3stud1ant3