I've got a class derived from UIView called ContentListView that goes like this:
import UIKit
import RxSwift
import RxRelay
import RxCocoa
import SwinjectStoryboard
class ContentListView: UIView {
@IBInspectable var listName: String = ""
@IBInspectable var headerHeight: CGFloat = 0
@IBInspectable var footerHeight: CGFloat = 0
@IBOutlet weak var tableView: UITableView!
let viewDidLoad = PublishRelay<Void>()
let viewDidAppear = PublishRelay<Void>()
let reloadData = PublishRelay<Void>()
let manualLoadData = PublishRelay<[ContentCellType]>()
var initialContents: [ContentCellType]?
private(set) lazy var selectedContent = selectedContentRelay.asSignal()
private let disposeBag = DisposeBag()
private let cellTypes = BehaviorRelay<[ContentCellType]>(value: [])
private let didSelectIndexRelay = PublishRelay<Int>()
private let selectedContentRelay = PublishRelay<ContentCellType>()
private let contentNotFoundReuseId = R.reuseIdentifier.contentNotFoundErrorCell.identifier
private let contentNotMatchReuseId = R.reuseIdentifier.contentNotMatchErrorCell.identifier
private let myContentReuseId = R.reuseIdentifier.myContentTableViewCell.identifier
private let associatedPracticeReuseId = R.reuseIdentifier.associatedPracticeTableViewCell.identifier
private let associatedPracticeContentReuseId = R.reuseIdentifier.associatedPracticeContentTableViewCell.identifier
override init(frame: CGRect) {
super.init(frame: frame)
instantiateView()
}
required init?(coder: NSCoder) {
super.init(coder: coder)
instantiateView()
}
private func instantiateView() {
guard let nib = R.nib.contentListView(owner: self) else { return }
addSubview(nib, method: .fill)
}
override func awakeFromNib() {
super.awakeFromNib()
setupTableView()
setupViewModel()
}
private func setupTableView() {
setupTableViewLayouts()
registerCells()
setupTableViewEvents()
}
private func setupViewModel() {
let viewModel = createViewModel()
viewModel.contents
.drive(cellTypes)
.disposed(by: self.disposeBag)
viewModel.selectedContent
.emit(to: selectedContentRelay)
.disposed(by: disposeBag)
viewDidLoad.asSignal()
.emit(to: viewModel.viewDidLoad)
.disposed(by: disposeBag)
viewDidAppear.asSignal()
.emit(to: viewModel.viewDidAppear)
.disposed(by: disposeBag)
reloadData.asSignal()
.emit(to: viewModel.reloadData)
.disposed(by: disposeBag)
let loadInitialContents = Observable.just(initialContents).compactMap { $0 }
Observable.merge(loadInitialContents, manualLoadData.asObservable())
.bind(to: viewModel.manualLoadData)
.disposed(by: disposeBag)
didSelectIndexRelay
.bind(to: viewModel.didSelectIndex)
.disposed(by: disposeBag)
}
private func createViewModel() -> ContentListViewModel {
if let viewModel = SwinjectStoryboard.defaultContainer.resolve(ContentListViewModel.self, name: listName) {
return viewModel
} else {
let viewModel = SwinjectStoryboard.defaultContainer.resolve(ContentListViewModel.self, name: "NoDataProvider")!
return viewModel
}
}
private func setupTableViewLayouts() {
tableView.backgroundColor = R.color.grey91()
tableView.separatorStyle = .none
}
private func registerCells() {
tableView.register(UINib(resource: R.nib.contentNotFoundTableViewCell),
forCellReuseIdentifier: contentNotFoundReuseId)
tableView.register(UINib(resource: R.nib.contentNotMatchTableViewCell),
forCellReuseIdentifier: contentNotMatchReuseId)
tableView.register(UINib(resource: R.nib.myContentTableViewCell),
forCellReuseIdentifier: myContentReuseId)
tableView.register(UINib(resource: R.nib.associatedPracticeTableViewCell),
forCellReuseIdentifier: associatedPracticeReuseId)
tableView.register(UINib(resource: R.nib.associatedPracticeContentTableViewCell),
forCellReuseIdentifier: associatedPracticeContentReuseId)
}
private func setupTableViewEvents() {
tableView.rx.setDelegate(self).disposed(by: disposeBag)
cellTypes.asDriver()
.drive(tableView.rx.items) { [weak self] tableView, _, element in
return self?.createCell(tableView: tableView, element: element) ?? UITableViewCell()
}
.disposed(by: disposeBag)
cellTypes.accept([.notFound])
}
private func createCell(tableView: UITableView, element: ContentCellType) -> UITableViewCell? {
switch element {
case .notFound: return tableView.dequeueReusableCell(withIdentifier: contentNotFoundReuseId)
case .notMatch: return tableView.dequeueReusableCell(withIdentifier: contentNotMatchReuseId)
case .content(data: _): return nil
case .myContent(let data):
let cell = tableView.dequeueReusableCell(withIdentifier: myContentReuseId) as? MyContentTableViewCell
cell?.setup(with: data)
return cell
case .practice(let data):
let cell = tableView.dequeueReusableCell(withIdentifier: associatedPracticeReuseId) as? AssociatedPracticeTableViewCell
cell?.setup(with: data)
return cell
case .provider(let data):
let cell = tableView.dequeueReusableCell(withIdentifier: associatedPracticeContentReuseId) as? AssociatedPracticeContentTableViewCell
cell?.setup(with: data)
return cell
}
}
}
extension ContentListView: UITableViewDelegate {
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
let type = cellTypes.value[indexPath.row]
switch type {
case .notFound, .notMatch: return 320
case .myContent: return 440
case .practice: return 76
case .provider: return 412
default: return 0
}
}
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
return headerHeight
}
func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
return footerHeight
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
didSelectIndexRelay.accept(indexPath.row)
}
}
It is used in the view controller like this:
import UIKit
import RxSwift
import RxCocoa
class ContentsViewController: UIViewController, HideNavigationBarToggling {
@IBOutlet var contentButtonViews: [ContentsButtonView]!
@IBOutlet var contentListViews: [ContentListView]!
private let disposeBag = DisposeBag()
private var selectedPracticeName: String?
private var selectedParam: MyContentViewParam?
override func viewDidLoad() {
super.viewDidLoad()
hideListViews() //<<<<<<<<<<<<<< CRASH HERE!!!!!!
contentsButtonController.setup(with: contentButtonViews)
contentsButtonController.activeSelectionIndex
.drive(onNext: { [weak self] in
self?.hideListViews()
self?.contentListViews[$0].isHidden = false
})
.disposed(by: disposeBag)
contentListViews.forEach {
$0.selectedContent
.emit(onNext: { [weak self] in self?.onSelected(with: $0) })
.disposed(by: disposeBag)
}
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
contentListViews.forEach { $0.viewDidAppear.accept(()) }
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if let providerVC = segue.destination as? AssociatedPracticeContentsViewController {
providerVC.title = selectedPracticeName
} else if let destinationNavigation = segue.destination as? KolibreeNavigationController,
let bottomVC = destinationNavigation.visibleViewController as? BottomMessageViewController {
let messageSegue = segue as? SwiftMessagesBottomTabSegue
messageSegue?.interactiveHide = false
bottomVC.titleString = selectedParam?.title ?? ""
bottomVC.setup = { [weak self] bottomMessage in
if let pdfReader = bottomMessage as? PDFReaderMessageView,
let param = self?.selectedParam {
pdfReader.load(param: param)
}
}
}
}
private func hideListViews() {
contentListViews.forEach {
$0.isHidden = true
}
}
private func onSelected(with cellType: ContentCellType) {
switch cellType {
case .myContent(let param): openContent(for: param)
case .practice(let param): showAssociatedPracticeContents(for: param)
default: return
}
}
private func openContent(for param: MyContentViewParam) {
switch param.type {
case .book:
selectedParam = param
performSegue(withIdentifier: R.segue.contentsViewController.openPdfReaderSegue.identifier, sender: nil)
case .video, .audio:
let avContentPlayerVC = AVContentPlayerViewController()
present(avContentPlayerVC, animated: true) {
avContentPlayerVC.load(param: param)
}
default: return
}
}
private func showAssociatedPracticeContents(for param: AssociatedPracticeViewParam) {
SelectedAssociatedPracticeStorageAdapter().store(param.practiceId)
selectedPracticeName = param.practiceName
performSegue(withIdentifier: R.segue.contentsViewController.showAssociatedPracticeContents.identifier,
sender: nil)
}
}
But when I tried to run it on iOS 11 and 12 (both simulators and actual devices), it crashed. Although it worked on iOS 13 and 14. It crashed with this error:
Precondition failed: NSArray element failed to match the Swift Array Element type Expected ContentListView but found UIView: file /BuildRoot/Library/Caches/com.apple.xbs/Sources/swiftlang/swiftlang-1001.0.82.4/swift/stdlib/public/core/ArrayBuffer.swift, line 346 2021-09-22 13:24:27.624568+0700 Kolibree[16970:513272] Precondition failed: NSArray element failed to match the Swift Array Element type Expected ContentListView but found UIView: file /BuildRoot/Library/Caches/com.apple.xbs/Sources/swiftlang/swiftlang-1001.0.82.4/swift/stdlib/public/core/ArrayBuffer.swift, line 346
The contentListViews in the storyboard themselves are of the type ContentListView so the error seems weird. How do I solve this? It has been days and I'm stuck at this. :(
Thanks in advance.
Replies
1
Boosts
0
Views
1.3k
Participants
3
