Crash on iPad when tapping activity button

FileExplorer/FileExplorer/ActionsViewController.swift

@@ -24,6 +24,7 @@
 //  SOFTWARE.
 
 import UIKit
+import GoogleMobileAds
 
 protocol ActionsViewControllerDelegate: class {
     func actionsViewControllerDidRequestRemoval(_ controller: ActionsViewController)
@@ -33,7 +34,7 @@ protocol ActionsViewControllerDelegate: class {
 final class ActionsViewController: UIViewController {
     weak var delegate: ActionsViewControllerDelegate?
 
-    private let toolbar = UIToolbar()
+    let toolbar = UIToolbar()
     private let contentViewController: UIViewController
 
     init(contentViewController: UIViewController) {
@@ -48,7 +49,7 @@ final class ActionsViewController: UIViewController {
     override func viewDidLoad() {
         super.viewDidLoad()
 
-        view.backgroundColor = UIColor.white
+        view.backgroundColor = UIColor.dynamicColor(light: .white, dark: .black)//UIColor.white
 
         extendedLayoutIncludesOpaqueBars = false
         edgesForExtendedLayout = []
@@ -63,10 +64,23 @@ final class ActionsViewController: UIViewController {
             UIBarButtonItem(barButtonSystemItem: .trash, target: self, action: #selector(handleTrashButtonTap))
         ]
 
-        addContentChildViewController(contentViewController, insets: UIEdgeInsets(top: 0, left: 0, bottom: toolbar.bounds.height, right: 0))
+        addContentChildViewController(contentViewController, insets: UIEdgeInsets(top: 0, left: 0, bottom: toolbar.bounds.height+30, right: 0))
         navigationItem.title = contentViewController.navigationItem.title
+        contentViewController.view.bottomAnchor.constraint(equalTo: toolbar.topAnchor, constant: 0).isActive = true
+        interstitial = createAndLoadInterstitial()
     }
 
+    var interstitial: GADInterstitial!
+    func callAds(){
+        if interstitial != nil {
+            if interstitial.isReady {
+                interstitial.present(fromRootViewController: self)
+            } else {
+              print("Ad wasn't ready")
+            }
+        }
+    }
+
     // MARK: Actions
 
     @objc
@@ -76,6 +90,25 @@ final class ActionsViewController: UIViewController {
 
     @objc
     private func handleTrashButtonTap() {
+        callAds()
         delegate?.actionsViewControllerDidRequestRemoval(self)
     }
 }
+
+
+extension ActionsViewController: GADInterstitialDelegate{
+    public func interstitialDidReceiveAd(_ ad: GADInterstitial) {
+        //self.interstitial.present(fromRootViewController: self)
+    }
+    func createAndLoadInterstitial() -> GADInterstitial {
+        let interstitial = GADInterstitial(adUnitID: )
+        interstitial.delegate = self
+        interstitial.load(GADRequest())
+        return interstitial
+    }
+
+    public func interstitialDidDismissScreen(_ ad: GADInterstitial) {
+        interstitial = createAndLoadInterstitial()
+        //navigationController?.popViewController(animated: true)
+    }
+}

FileExplorer/FileExplorer/Array+Extension.swift

@@ -28,7 +28,7 @@ import Foundation
 extension Array where Element: Equatable {
     @discardableResult
     mutating func remove(_ item: Element) -> Bool {
-        let index = self.index() { $0 == item }
+        let index = self.firstIndex() { $0 == item }
         if let index = index {
             remove(at: index)
             return true

FileExplorer/FileExplorer/DirectoryContentViewController.swift

@@ -24,8 +24,7 @@
 //  SOFTWARE.
 
 import Foundation
-
-protocol DirectoryContentViewControllerDelegate: class {
+protocol DirectoryContentViewControllerDelegate: AnyObject {
     func directoryContentViewController(_ controller: DirectoryContentViewController, didChangeEditingStatus isEditing: Bool)
     func directoryContentViewController(_ controller: DirectoryContentViewController, didSelectItem item: Item<Any>)
     func directoryContentViewController(_ controller: DirectoryContentViewController, didSelectItemDetails item: Item<Any>)
@@ -47,6 +46,13 @@ final class DirectoryContentViewController: UICollectionViewController {
         }
     }
 
+    //SWIPE
+    var defaultOptions = SwipeOptions()
+    var isSwipeRightEnabled = true
+    var buttonDisplayMode: ButtonDisplayMode = .titleAndImage
+    var buttonStyle: ButtonStyle = .backgroundColor
+    var usesTallCells = false
+    //SWIPE
     init(viewModel: DirectoryContentViewModel) {
         self.viewModel = viewModel
         self.toolbar = UIToolbar.makeToolbar()
@@ -57,6 +63,7 @@ final class DirectoryContentViewController: UICollectionViewController {
 
         super.init(collectionViewLayout: layout)
         viewModel.delegate = self
+        navigationItem.title = ""
     }
 
     required init?(coder aDecoder: NSCoder) {
@@ -83,7 +90,7 @@ final class DirectoryContentViewController: UICollectionViewController {
         extendedLayoutIncludesOpaqueBars = false
         edgesForExtendedLayout = []
 
-        collectionView.backgroundColor = UIColor.white
+        collectionView.backgroundColor = UIColor.dynamicColor(light: .white, dark: .black)
         collectionView.registerCell(ofClass: ItemCell.self)
         collectionView.registerHeader(ofClass: CollectionViewHeader.self)
         collectionView.registerFooter(ofClass: CollectionViewFooter.self)
@@ -94,9 +101,16 @@ final class DirectoryContentViewController: UICollectionViewController {
         self.toolbarBottomConstraint = toolbar.pinToBottom(of: view)
         self.toolbarBottomConstraint?.constant = toolbar.bounds.height
 
+        self.toolbar.isHidden = true
+
         syncWithViewModel(false)
     }
 
+    override func viewWillAppear(_ animated: Bool) {
+        super.viewWillAppear(animated)
+        navigationItem.title = ""
+    }
+
     func syncWithViewModel(_ animated: Bool) {
         if let items = toolbar.items {
             for barButtonItem in items {
@@ -127,6 +141,7 @@ final class DirectoryContentViewController: UICollectionViewController {
 
         collectionView.setEditing(editing, animated: animated)
         UIView.animate(withDuration: 0.2) {
+            self.toolbar.isHidden.toggle()
             self.toolbarBottomConstraint?.constant = editing ? 0.0 : self.toolbar.bounds.height
             collectionView.contentInset.bottom = editing ? self.toolbar.bounds.height : 0.0
             collectionView.scrollIndicatorInsets = collectionView.contentInset
@@ -145,18 +160,18 @@ final class DirectoryContentViewController: UICollectionViewController {
             selectActionButton,
             UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil),
             deleteActionButton
-            ].flatMap { $0 }
+            ].compactMap { $0 }
     }
 
     // MARK: Actions
 
-    func handleSelectButtonTap() {
+    @objc func handleSelectButtonTap() {
         viewModel.chooseItems { selectedItems in
             delegate?.directoryContentViewController(self, didChooseItems: selectedItems)
         }
     }
 
-    func handleDeleteButtonTap() {
+    @objc func handleDeleteButtonTap() {
         showLoadingIndicator()
         viewModel.deleteItems(at: viewModel.indexPathsOfSelectedCells) { [weak self] result in
             guard let strongSelf = self else { return }
@@ -171,7 +186,7 @@ final class DirectoryContentViewController: UICollectionViewController {
         }
     }
 
-    func handleEditButtonTap() {
+    @objc func handleEditButtonTap() {
         viewModel.isEditing = !viewModel.isEditing
         delegate?.directoryContentViewController(self, didChangeEditingStatus: viewModel.isEditing)
     }
@@ -214,19 +229,20 @@ extension DirectoryContentViewController {
         cell.subtitle = itemViewModel.subtitle
         cell.accessoryType = itemViewModel.accessoryType
         cell.iconImage = itemViewModel.thumbnailImage(with: cell.maximumIconSize)
+        cell.delegate = self
         return cell
     }
 
     override func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView {
-        if kind == UICollectionElementKindSectionHeader {
+        if kind == UICollectionView.elementKindSectionHeader {
             let header = collectionView.dequeueReusableHeader(ofClass: CollectionViewHeader.self, for: indexPath) as CollectionViewHeader
             header.sortModeChangeAction = viewModel.sortModeChangeAction
             header.sortMode = viewModel.sortMode
             UIView.performWithoutAnimation {
                 header.layoutIfNeeded()
             }
             return header
-        } else if kind == UICollectionElementKindSectionFooter {
+        } else if kind == UICollectionView.elementKindSectionFooter {
             return collectionView.dequeueReusableFooter(ofClass: CollectionViewFooter.self, for: indexPath) as CollectionViewFooter
         } else {
             fatalError()
@@ -252,3 +268,76 @@ extension DirectoryContentViewController: UISearchResultsUpdating {
         viewModel.searchQuery = searchController.searchBar.text
     }
 }
+
+extension DirectoryContentViewController: SwipeCollectionViewCellDelegate {
+
+    func collectionView(_ collectionView: UICollectionView, editActionsForItemAt indexPath: IndexPath, for orientation: SwipeActionsOrientation) -> [SwipeAction]? {
+
+        let flag = SwipeAction(style: .default, title: nil, handler: nil)
+        flag.hidesWhenSelected = true
+        configure(action: flag, with: .flag)
+
+        let delete = SwipeAction(style: .destructive, title: nil) { [self] action, indexPath in
+            viewModel.deleteItems(at: [indexPath]) { [weak self] result in
+                guard let strongSelf = self else { return }
+                delegate?.directoryContentViewController(strongSelf, didChangeEditingStatus: strongSelf.viewModel.isEditing)
+            }
+        }
+        configure(action: delete, with: .trash)
+
+        return [delete]
+    }
+
+    func collectionView(_ collectionView: UICollectionView, editActionsOptionsForItemAt indexPath: IndexPath, for orientation: SwipeActionsOrientation) -> SwipeOptions {
+        var options = SwipeOptions()
+        options.expansionStyle = orientation == .left ? .selection : .destructive
+        options.transitionStyle = defaultOptions.transitionStyle
+
+        switch buttonStyle {
+        case .backgroundColor:
+            options.buttonSpacing = 11
+        case .circular:
+            options.buttonSpacing = 4
+        #if canImport(Combine)
+            if #available(iOS 13.0, *) {
+                options.backgroundColor = UIColor.systemGray6
+            } else {
+                options.backgroundColor = #colorLiteral(red: 0.9467939734, green: 0.9468161464, blue: 0.9468042254, alpha: 1)
+            }
+        #else
+            options.backgroundColor = #colorLiteral(red: 0.9467939734, green: 0.9468161464, blue: 0.9468042254, alpha: 1)
+        #endif
+        }
+
+        return options
+    }
+
+    func visibleRect(for collectionView: UICollectionView) -> CGRect? {
+        if usesTallCells == false { return nil }
+
+        if #available(iOS 11.0, *) {
+            return collectionView.safeAreaLayoutGuide.layoutFrame
+        } else {
+            let topInset = navigationController?.navigationBar.frame.height ?? 0
+            let bottomInset = navigationController?.toolbar?.frame.height ?? 0
+            let bounds = collectionView.bounds
+
+            return CGRect(x: bounds.origin.x, y: bounds.origin.y + topInset, width: bounds.width, height: bounds.height - bottomInset)
+        }
+    }
+
+    func configure(action: SwipeAction, with descriptor: ActionDescriptor) {
+        action.title = descriptor.title(forDisplayMode: buttonDisplayMode)
+        action.image = descriptor.image(forStyle: buttonStyle, displayMode: buttonDisplayMode)
+
+        switch buttonStyle {
+        case .backgroundColor:
+            action.backgroundColor = descriptor.color(forStyle: buttonStyle)
+        case .circular:
+            action.backgroundColor = .clear
+            action.textColor = descriptor.color(forStyle: buttonStyle)
+            action.font = .systemFont(ofSize: 13)
+            action.transitionDelegate = ScaleTransition.default
+        }
+    }
+}

FileExplorer/FileExplorer/DirectoryContentViewModel.swift

@@ -191,7 +191,7 @@ final class DirectoryContentViewModel {
     func deselect(at indexPath: IndexPath) {
         let item = self.item(for: indexPath)
         if isEditing {
-            if let index = selectedItems.index(where: { $0 == item }) {
+            if let index = selectedItems.firstIndex(where: { $0 == item }) {
                 selectedItems.remove(at: index)
             }
         } else {
@@ -201,7 +201,7 @@ final class DirectoryContentViewModel {
     }
 
     func deleteItems(at indexPaths: [IndexPath], completionBlock: @escaping (Result<Void>) -> Void) {
-        let items = indexPaths.flatMap { item(for: $0) }
+        let items = indexPaths.compactMap { item(for: $0) }
         fileService.delete(items: items) { result, removedItems, itemsNotRemovedDueToFailure in
             completionBlock(result)
             self.delegate?.directoryViewModelDidChange(self)

FileExplorer/FileExplorer/DirectoryItemPresentationCoordinator.swift

@@ -66,7 +66,6 @@ final class DirectoryItemPresentationCoordinator {
                 return directoryViewController
             }
             navigationController?.pushViewController(viewController, animated: animated)
-
         } else {
             let viewController = ErrorViewController(errorDescription: "URL is incorrect.", finishButtonHidden: finishButtonHidden)
             viewController.delegate = self

FileExplorer/FileExplorer/DirectoryViewController.swift

@@ -104,9 +104,14 @@ final class DirectoryViewController: UIViewController {
         addContentChildViewController(directoryContentViewController, insets: UIEdgeInsets(top: searchController.searchBar.bounds.height, left: 0.0, bottom: 0.0, right: 0.0))
         navigationItem.rightBarButtonItem = directoryContentViewController.navigationItem.rightBarButtonItem
         navigationItem.title = directoryContentViewController.navigationItem.title
-        view.sendSubview(toBack: directoryContentViewController.view)
+        view.sendSubviewToBack(directoryContentViewController.view)
         setUpLeftBarButtonItem()
     }
+
+    override func viewWillAppear(_ animated: Bool) {
+        super.viewWillAppear(animated)
+        navigationItem.title = ""
+    }
 
     func setUpSearchBarController() {
         let searchBar = searchController.searchBar
@@ -131,10 +136,9 @@ final class DirectoryViewController: UIViewController {
             searchController.isActive = newValue
         }
     }
-
     // MARK: Actions
 
-    func handleFinishButtonTap() {
+    @objc func handleFinishButtonTap() {
         delegate?.directoryViewControllerDidFinish(self)
     }
 }
@@ -149,9 +153,11 @@ extension DirectoryViewController: UISearchBarDelegate {
 extension DirectoryViewController: DirectoryContentViewControllerDelegate {
     func directoryContentViewController(_ controller: DirectoryContentViewController, didChangeEditingStatus isEditing: Bool) {
         searchController.searchBar.isEnabled = !isEditing
+        navigationItem.title = ""
     }
 
     func directoryContentViewController(_ controller: DirectoryContentViewController, didSelectItem item: Item<Any>) {
+
         delegate?.directoryViewController(self, didSelectItem: item)
     }
 

FileExplorer/FileExplorer/ErrorViewController.swift

@@ -64,7 +64,7 @@ final class ErrorViewController: UIViewController {
 
     // MARK: Actions
 
-    func handleFinishButtonTap() {
+    @objc func handleFinishButtonTap() {
         delegate?.errorViewControllerDidFinish(self)
     }
 }

FileExplorer/FileExplorer/FileExplorerViewController.swift

@@ -101,7 +101,7 @@ public final class FileExplorerViewController: UIViewController {
     override public func viewDidLoad() {
         super.viewDidLoad()
 
-        view.backgroundColor = UIColor.white
+        view.backgroundColor = UIColor.dynamicColor(light: .white, dark: .black)
 
         let navigationController = UINavigationController()
         addContentChildViewController(navigationController)
@@ -126,6 +126,16 @@ public final class FileExplorerViewController: UIViewController {
         } else {
             precondition(false, "Passed URL is incorrect.")
         }
+        navigationItem.title = ""
+    }
+
+    override public var prefersStatusBarHidden: Bool {
+        return true
+    }
+
+    public override func viewWillDisappear(_ animated: Bool) {
+        super.viewWillDisappear(animated)
+        navigationItem.title = ""
     }
 
     override public func viewDidDisappear(_ animated: Bool) {

FileExplorer/FileExplorer/FileItemPresentationCoordinator.swift

@@ -79,8 +79,8 @@ final class FileItemPresentationCoordinator {
 
 extension FileItemPresentationCoordinator: ActionsViewControllerDelegate {
     func actionsViewControllerDidRequestShare(_ controller: ActionsViewController) {
-        let activityItem = UIActivityItemProvider(placeholderItem: item.url)
-        let activityViewController = UIActivityViewController(activityItems: [activityItem], applicationActivities: nil)
+        let activityViewController = UIActivityViewController(activityItems: [item.url], applicationActivities: nil)
+        activityViewController.popoverPresentationController?.barButtonItem = controller.toolbar.items?[0]
         navigationController?.present(activityViewController, animated: true, completion: nil)
     }