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2021/04/07 01:10

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@@ -1,463 +1,3 @@
 Realmの初期データを作り、最初はプロフィール画像がないためアセットの画像を表示し、プロフィール設定した後には画像をUIImageに変換し表示しようと考えました。ビルドすると何もエラーは出てこないのですが、いざ実行すると、アンラップしろと出てきました。UserクラスではprofileImageはnilとし、Objectを継承するとオプショナルなのでアンラップする必要はないはずです。
 なんだか矛盾しているのでよく分からない状態でございます。
-それとも、コードでどこか間違えているのかもしれないので、どなたかご教授してくださると助かります。
-下に、Userクラスと、コード全体を掲載しておきます。
-それではよろしくお願いします。
-![イメージ説明](ddbd5db7974e1295fa42e888a2de07bd.jpeg)
-```ここに言語を入力
-class User: Object {
-    @objc dynamic var id: Int = 0
-    @objc dynamic var fullname: String = ""
-    @objc dynamic var username: String = ""
-    @objc dynamic var profileText: String = ""
-    @objc dynamic var profileImage: Data? = nil
-    override static func primaryKey() -> String? {
-        return "id"
-    }
-}
-```
-```ここに言語を入力
-//  FeedController.swift
-import UIKit
-import RealmSwift
-private let reuseIdentifier = "TweetCell"
-class FeedController: UICollectionViewController {
-    //MARK: - Properties
-    var userItems: Results<User>! {
-        didSet { configureLeftBarButton() }
-    }
-    private var user: User!
-    private var profileImage: UIImage?
-    private var tweets = [Tweet]() {
-        didSet { collectionView.reloadData() }
-    }
-    //MARK: - LifeCycle
-    override func viewDidLoad() {
-        super.viewDidLoad()
-        configureUI()
-//        setRealm()
-//        fetchTweets()
-    }
-    override func viewWillAppear(_ animated: Bool) {
-        super.viewWillAppear(animated)
-        navigationController?.navigationBar.barStyle = .default
-        navigationController?.navigationBar.isHidden = false
-    }
-    // MARK: - API
-    func fetchTweets(){
-        // ここでUploadTweetControllerからデータをもらう
-//        self.tweets = tweets
-    }
-    // MARK: - Selectors
-    @objc func handleRefresh(){
-        fetchTweets()
-    }
-    @objc func handleProfileImageTap() {
-        guard let user = user else { return }
-        let controller = ProfileController(user: user)
-        navigationController?.pushViewController(controller, animated: true)
-    }
-    //MARK: - Helpers
-    func configureUI(){
-        view.backgroundColor = .white
-        collectionView.register(TweetCell.self, forCellWithReuseIdentifier: reuseIdentifier)
-        collectionView.backgroundColor = .white
-        let imageView = UIImageView(image: UIImage(named: "Twitter_Logo_Blue"))
-        imageView.contentMode = .scaleAspectFill
-        imageView.setDimensions(width: 44, height: 44)
-        navigationItem.titleView = imageView
-        print(Realm.Configuration.defaultConfiguration.fileURL!)
-        configureLeftBarButton()
-    }
-    func configureLeftBarButton(){
-        if user.profileImage != nil {
-            let pngData = profileImage?.toPNGData()
-            let jpegData = profileImage?.toJPEGData()
-            let profileImageView = UIImageView()
-            //            user.fullname = fullnameTextField.text!
-            //            user.username = usernameTextField.text!
-            user.profileImage = pngData ?? jpegData
-            profileImageView.image = UIImage(data: user!.profileImage!)
-            profileImageView.setDimensions(width: 32, height: 32)
-            profileImageView.layer.cornerRadius = 32 / 2
-            profileImageView.layer.masksToBounds = true
-            let tap = UITapGestureRecognizer(target: self, action: #selector(handleProfileImageTap))
-            profileImageView.addGestureRecognizer(tap)
-            navigationItem.leftBarButtonItem = UIBarButtonItem(customView: profileImageView)
-        } else {
-            let profileImageView = UIImageView()
-            profileImageView.image = UIImage(named: "placeholderImg")
-            profileImageView.setDimensions(width: 32, height: 32)
-            profileImageView.layer.cornerRadius = 32 / 2
-            profileImageView.layer.masksToBounds = true
-            let tap = UITapGestureRecognizer(target: self, action: #selector(handleProfileImageTap))
-            profileImageView.addGestureRecognizer(tap)
-            navigationItem.leftBarButtonItem = UIBarButtonItem(customView: profileImageView)
-        }
-    }
-    private func setRealm() {
-        let realm = try! Realm()
-        userItems = realm.objects(User.self)
-        let initUserData: Results<User> = realm.objects(User.self)
-        print("initUserData: (initUserData)")
-    }
-    func configureUserCell(image: UIImage, userName: String, fullName: String){
-        let realm = try! Realm()
-        userItems = realm.objects(User.self)
-//        profileImageView.image = image
-    }
-    func newId<T: Object>(model: T) -> Int? {
-        guard let key = T.primaryKey() else { return nil }
-        let realm = try! Realm()
-        if let last = realm.objects(T.self).sorted(byKeyPath: "id", ascending: true).last,
-            let lastId = last[key] as? Int {
-            return lastId + 1
-        } else {
-            return 0
-        }
-    }
-}
-// MARK: - UICollectionViewDelegate/DataSource
-extension FeedController {
-    override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
-//        return tweets.count
-        return 1
-    }
-    override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
-        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: reuseIdentifier, for: indexPath)
-//        cell.tweet = tweets[indexPath.row]
-        return cell
-    }
-    override func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
-//        let controller = TweetController(tweet: tweets[indexPath.row])
-//        let controller = ProfileController(user: user!)
-//        navigationController?.pushViewController(controller, animated: true)
-    }
-}
-// MARK: - UICollectionViewDelegateFlowLayout
-extension FeedController: UICollectionViewDelegateFlowLayout {
-    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
-//        let viewModel = TweetViewModel(tweet: tweets[indexPath.row])
-//        let height = viewModel.size(forWidth: view.frame.width).height
-//        return CGSize(width: view.frame.width, height: height + 72)
-        return CGSize(width: view.frame.width, height: 100)
-    }
-}
-// MARK: - TweetCellDelegate
-extension FeedController: TweetCellDelegate {
-    func handleProfileImageTapped(_ cell: TweetCell) {
-//        guard let user = cell.tweet?.user else { return }
-        let controller = ProfileController(user: user)
-        navigationController?.pushViewController(controller, animated: true)
-    }
-}
-public extension UIImage {
-    // MARK: Public Methods
-    /// イメージ→PNGデータに変換する
-    /// - Returns: 変換後のPNGデータ
-    func toPNGData() -> Data {
-        guard let data = self.pngData() else {
-            print("イメージをPNGデータに変換できませんでした。")
-            return Data()
-        }
-        return data as Data
-    }
-    /// イメージ→JPEGデータに変換する
-    /// - Returns: 変換後のJPEGデータ
-    func toJPEGData() -> Data {
-        guard let data = self.jpegData(compressionQuality: 1.0) else {
-            print("イメージをJPEGデータに変換できませんでした。")
-            return Data()
-        }
-        return data as Data
-    }
-}
-```