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回答の追記
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##追記
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@IBAction func add(_ sender: Any) {
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if UserDefaults.standard.object(forKey: "douga") != nil{
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http://www.atotok.com/labo/ios_dev/20111121021151.html
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この記事が参考になるかと思います。
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UIImageの配列をUserDefaultsに保存していたためエラーが発生していました。
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UIImageを保存する場合は、一旦Data型に変換する必要があります。なので、一旦uploadしたimageをdataに変換し、そのdataを配列に入れました。参考になれば幸いです
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一旦そのまま修正箇所のコードを貼りますね
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`AddViewController.swift`
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変えた点は
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①インスタンス変数に、`newArray: [Data]`を持たせる
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②addメソッド内で、UIImageの配列をuserDefaultsに入れるのではなく、[Data]の配列を入れる
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```swift
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//
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// AddViewController.swift
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// Swift4TodoApp1
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//
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// Created by 服部 光男 on 2017/12/25.
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// Copyright © 2017年 Hattori. All rights reserved.
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//
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import UIKit
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class AddViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
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@IBOutlet var imageView: UIImageView!
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var array = [UIImage]()
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//追加したやつ
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var newArray = [Data]()
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override func viewDidLoad() {
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super.viewDidLoad()
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imageView.image = UIImage(named: "default.png")
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}
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override func didReceiveMemoryWarning() {
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super.didReceiveMemoryWarning()
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// Dispose of any resources that can be recreated.
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}
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@IBAction func sentaku(_ sender: Any) {
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// if UIImagePickerController.isSourceTypeAvailable(.photoLibrary) {
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// 写真を選ぶビュー
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let pickerView = UIImagePickerController()
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// 写真の選択元
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pickerView.sourceType = .photoLibrary
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pickerView.delegate = self
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self.present(pickerView, animated: true)
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// }
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}
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// 写真を選んだ後の処理
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func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
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// 選択した写真を取得
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let image = info[UIImagePickerControllerOriginalImage] as! UIImage
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// ビューに表示
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self.imageView.image = image
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// ビューを閉じる
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self.dismiss(animated: true)
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}
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//addメソッド内を結構修正しました
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@IBAction func add(_ sender: Any) {
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if UserDefaults.standard.object(forKey: "douga") != nil {
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// array = UserDefaults.standard.object(forKey: "douga") as! [UIImage]
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newArray = UserDefaults.standard.object(forKey: "douga") as! [Data]
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}
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// array.append(imageView.image!)
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guard let image = imageView.image else {
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return
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}
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let data = UIImagePNGRepresentation(image)
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if let dt = data {
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newArray.append(dt)
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UserDefaults.standard.set(newArray, forKey: "douga")
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self.navigationController?.popViewController(animated: true)
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}
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}
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/*
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// MARK: - Navigation
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// In a storyboard-based application, you will often want to do a little preparation before navigation
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override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
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// Get the new view controller using segue.destinationViewController.
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// Pass the selected object to the new view controller.
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}
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*/
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}
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```
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`ViewController.swift`
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変えた点は
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①インスタンス変数に、`newResultArray: [Data]`を持たせる
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②viewWillAppearメソッド内で、UIImageの配列をuserDefaultsに入れるのではなく、[Data]の配列を入れる
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```swift
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//
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// ViewController.swift
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// Swift4TodoApp1
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//
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// Created by 服部 光男 on 2017/12/25.
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// Copyright © 2017年 Hattori. All rights reserved.
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//
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import UIKit
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class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
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@IBOutlet var tableView: UITableView!
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var resultArray = [UIImage]()
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//追加したやつ
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var newResultArray: [Data]!
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override func viewDidLoad() {
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super.viewDidLoad()
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tableView.delegate = self
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tableView.dataSource = self
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}
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//中身修正
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override func viewWillAppear(_ animated: Bool) {
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super.viewWillAppear(animated)
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if UserDefaults.standard.object(forKey: "douga") != nil {
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newResultArray = UserDefaults.standard.object(forKey: "douga") as! [Data]
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resultArray.removeAll()
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for d in newResultArray {
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let image = UIImage(data: d)
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if let i = image {
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resultArray.append(i)
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}
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}
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}
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tableView.reloadData()
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}
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func numberOfSections(in tableView: UITableView) -> Int {
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return 1
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}
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func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
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return resultArray.count
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}
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func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
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let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for:indexPath)
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cell.imageView?.image = resultArray[indexPath.row]
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return cell
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}
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override func didReceiveMemoryWarning() {
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super.didReceiveMemoryWarning()
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// Dispose of any resources that can be recreated.
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}
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}
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```
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