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トップに関する質問UICollectionViewCellの並び替えを保存したい

編集履歴

質問編集履歴

2

コードの追加

2016/09/05 06:31

投稿

退会済みユーザー
test CHANGED
File without changes
test CHANGED
@@ -7,3 +7,275 @@
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  並び順を保持する方法は何かありませんか？
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  ご教示よろしくお願いします。
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+ ```swift
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+
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+ import UIKit
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+
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+
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+
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+ class ViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate {
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+
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+
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+ var collectionView: UICollectionView?
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+
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+ var longPressGesture: UILongPressGestureRecognizer?
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+ var selectedIndexPath: NSIndexPath?
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+
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+
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+ override func viewDidLoad() {
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+
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+ super.viewDidLoad()
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+
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+ self.setupSubviews()
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+ self.autolayoutSubviews()
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+
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+
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+
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+ self.navigationItem.rightBarButtonItem = self.editButtonItem()
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+
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+ }
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+
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+
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+
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+ func setupSubviews() {
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+
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+
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+
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+ let flowLayout: UICollectionViewFlowLayout = UICollectionViewFlowLayout()
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+ flowLayout.minimumInteritemSpacing = 10.0
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+ flowLayout.minimumLineSpacing = 10.0
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+ flowLayout.sectionInset = UIEdgeInsets(top: 10.0, left: 10.0, bottom: 10.0, right: 10.0)
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+ flowLayout.itemSize = CGSizeMake(300.0, 100.0)
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+ self.collectionView = UICollectionView(frame: CGRectZero, collectionViewLayout: flowLayout)
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+ self.collectionView!.translatesAutoresizingMaskIntoConstraints = false
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+ self.collectionView!.dataSource = self
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+ self.collectionView!.delegate = self
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+ self.collectionView!.registerClass(FirstCell.self, forCellWithReuseIdentifier: "FirstCell")
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+ self.collectionView!.registerClass(SecondCell.self, forCellWithReuseIdentifier: "SecondCell")
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+ self.collectionView!.registerClass(ThirdCell.self, forCellWithReuseIdentifier: "ThirdCell")
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+ self.collectionView!.backgroundColor = UIColor.whiteColor()
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+
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+ self.view.addSubview(self.collectionView!)
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+ longPressGesture = UILongPressGestureRecognizer(target: self, action:
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+ #selector(ViewController.handleLongGesture(_:)))
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+ longPressGesture?.minimumPressDuration = 0.5
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+ self.longPressGesture!.enabled = false
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+ self.collectionView?.addGestureRecognizer(self.longPressGesture!)
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+ }
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+ func autolayoutSubviews() {
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+ self.collectionView!.topAnchor.constraintEqualToAnchor(self.view.topAnchor).active = true
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+ self.collectionView!.leadingAnchor.constraintEqualToAnchor(self.view.leadingAnchor).active = true
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+ self.collectionView!.trailingAnchor.constraintEqualToAnchor(self.view.trailingAnchor).active = true
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+ self.collectionView!.bottomAnchor.constraintEqualToAnchor(self.view.bottomAnchor).active = true
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+
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+ }
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+ override func setEditing(editing: Bool, animated: Bool) {
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+ super.setEditing(editing, animated: animated)
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+ self.collectionView!.allowsMultipleSelection = editing
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+ let indexPaths: [NSIndexPath] = self.collectionView!.indexPathsForVisibleItems()
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+ for indexPath in indexPaths {
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+ self.collectionView!.deselectItemAtIndexPath(indexPath, animated: false)
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+ let cell: UICollectionViewCell = self.collectionView!.cellForItemAtIndexPath(indexPath)!
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+
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+ }
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+
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+ if editing {
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+ self.longPressGesture!.enabled = true
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+ }
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+ else {
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+ self.longPressGesture!.enabled = false
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+ }
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+
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+
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+
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+ }
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+ func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
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+ return 3
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+ }
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+ func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
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+ let cellTypeNumber = indexPath.item % 3
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+
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+ switch cellTypeNumber {
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+
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+ case 0:
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+ let cell1 = collectionView.dequeueReusableCellWithReuseIdentifier("FirstCell", forIndexPath: indexPath) as! FirstCell
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+ cell1.backgroundColor = UIColor.redColor()
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+ return cell1
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+ case 1:
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+ let cell2 = collectionView.dequeueReusableCellWithReuseIdentifier("SecondCell", forIndexPath: indexPath) as! SecondCell
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+ cell2.backgroundColor = UIColor.yellowColor()
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+ return cell2
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+ default:
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+ let cell3 = collectionView.dequeueReusableCellWithReuseIdentifier("ThirdCell", forIndexPath: indexPath) as! ThirdCell
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+ cell3.backgroundColor = UIColor.greenColor()
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+ return cell3
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+ }
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+ }
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+ func collectionView(collectionView: UICollectionView, moveItemAtIndexPath sourceIndexPath: NSIndexPath, toIndexPath destinationIndexPath: NSIndexPath) {
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+ }
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+ func handleLongGesture(gesture: UILongPressGestureRecognizer) {
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+ switch(gesture.state) {
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+ case UIGestureRecognizerState.Began:
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+ guard let selectedIndexPath = collectionView?.indexPathForItemAtPoint(gesture.locationInView(collectionView!)) else {
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+ break
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+ }
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+ collectionView?.beginInteractiveMovementForItemAtIndexPath(selectedIndexPath)
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+ case UIGestureRecognizerState.Changed:
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+ collectionView?.updateInteractiveMovementTargetPosition(gesture.locationInView(gesture.view!))
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+ case UIGestureRecognizerState.Ended:
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+ collectionView?.endInteractiveMovement()
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+ default:
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+ collectionView?.cancelInteractiveMovement()
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+ }
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+ }
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+ }
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+ ```

1

質問の修正

2016/09/05 06:31

投稿

退会済みユーザー
test CHANGED
File without changes
test CHANGED
@@ -4,8 +4,6 @@
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  並べ替えられる機能は実装できたのですが、並べ替えが保存されずビルドし直すと、並べ替え前の順番に戻ってしまっています。
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- 自分なりにいろいろ調べてみたところ、NSObjectをNSDataに保存し、それからNSUserDefaultsに保存するのか、NSIndexPathを直接？NSUserDefaultsに保存するのか正しい方法がわからなくなってしまいました。
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+ 並び順を保持する方法は何かありませんか？
8
8
 
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-
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-
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- 解決法がございましたらご教示よろしくお願いします。
9
+ ご教示よろしくお願いします。