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##追記
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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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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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UserDefaults.standard.set(array, forKey: "douga")
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self.navigationController?.popViewController(animated: true)
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}
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```
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array.append(imageView.image!)で強制アンラップしている箇所が気になりますね。imageView.imageをprintしてもらってnilは入ってない状況でしょうか？あとブレイクポイントを設定してどこまで処理が走っているかみてみるのもいいかもしれません。
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