[英]UIVIewController Not Getting Deinitialized When Popping
I am building a settings screen in an app where I have a list of cells.我正在一个应用程序中构建一个设置屏幕,其中有一个单元格列表。 If a user taps on a cell it pushes another controller onto the stack.如果用户点击一个单元格,它会将另一个 controller 推到堆栈上。 However, I have this flow in several places in my app.但是,我在我的应用程序的几个地方都有这个流程。
Therefore, I decided to reuse a generic controller and initialize it with sections (depending on which cell was tapped)因此,我决定重用一个通用的 controller 并用部分初始化它(取决于哪个单元被点击)
However, when popping a UIViewController it isn't getting deinitialized但是,当弹出 UIViewController 时,它不会被取消初始化
// Class
class ProfileController: UIViewController {
private let authService: AuthSerivce
private let sections: [FormSectionComponent]
init(authService: AuthSerivce,
sections: [FormSectionComponent]) {
self.authService = authService
self.sections = sections
super.init(nibName: nil, bundle: nil)
}
}
// Cell Delegate
extension ProfileController: NavigateCellDelegate {
func navigate(cell: NavigateCell) {
guard let sections = cell.item?.components else { return }
let controller = ProfileController(authService: authService, sections: sections)
self.navigationController?.pushViewController(controller, animated: true)
}
}
protocol NavigateCellDelegate {
func navigate(cell: NavigateCell)
}
class NavigateCell: UICollectionViewCell {
var item: NavigateComponent?
var delegate: NavigateCellDelegate?
lazy var titleLabel: UILabel = {
let view = UILabel()
view.numberOfLines = 0
view.translatesAutoresizingMaskIntoConstraints = false
return view
}()
override init(frame: CGRect) {
super.init(frame: .zero)
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func bind(_ item: FormItemComponent) {
guard let item = item as? NavigateComponent else { return }
self.item = item
setUpView(item: item)
addTapGestureRecogniser()
}
func addTapGestureRecogniser() {
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(tapGesture))
self.addGestureRecognizer(tapGesture)
self.isUserInteractionEnabled = true
}
@objc func tapGesture() {
delegate?.navigate(cell: self)
}
override func prepareForReuse() {
super.prepareForReuse()
titleLabel.text = ""
}
}
extension NavigateCell {
func setUpView(item: NavigateComponent) {
titleLabel.text = item.title
addSubview(titleLabel)
NSLayoutConstraint.activate([
titleLabel.topAnchor.constraint(equalTo: topAnchor),
titleLabel.leadingAnchor.constraint(equalTo: leadingAnchor, constant: 16),
titleLabel.trailingAnchor.constraint(equalTo: trailingAnchor, constant: -16),
titleLabel.bottomAnchor.constraint(equalTo: bottomAnchor),
])
}
} // END
protocol NavigateCellDelegate: AnyObject {
func navigate(cell: NavigateCell)
}
class NavigateCell: UICollectionViewCell {
weak var item: NavigateComponent?
weak var delegate: NavigateCellDelegate?
Figured it out - The problem was with my DiffableDataSource and not declaring [weak self]想通了-问题出在我的 DiffableDataSource 上,而不是声明 [weak self]
return UICollectionViewDiffableDataSource(collectionView: profileView.collectionView) { [weak self] collectionView, indexPath, item in
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