編集履歴

質問編集履歴

画像の変更、コードの修正

2020/06/05 06:00

投稿

nishimu

スコア26

test CHANGED Viewed

File without changes

test CHANGED Viewed

@@ -60,268 +60,280 @@
         super.viewDidLoad()
+        self.view.backgroundColor = UIColor.red
+        self.collectionView.backgroundColor = UIColor.blue
+        collectionView.register(CollectionViewCell_D.self, forCellWithReuseIdentifier: "CollectionViewCell_D")
+        collectionView.register(CollectionViewCell_S.self, forCellWithReuseIdentifier: "CollectionViewCell_S")
+        let layout = UICollectionViewFlowLayout()
+        layout.scrollDirection = .vertical
+    }
+    func numberOfSections(in collectionView: UICollectionView) -> Int {
+        return 2
+    }
+    func collectionView(_ collectionView : UICollectionView, numberOfItemsInSection section: Int) -> Int {
+        if section == 0 {
+            print("generated (interests.count) d-cells")
+            return interests.count
+        } else{
+            print("generated (subCommittees.count) s-cells")
+            return subCommittees.count
+        }
+    }
-        collectionView.register(CollectionViewCell_D.self, forCellWithReuseIdentifier: "CollectionViewCell_D")
+    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
+        if indexPath.section == 0 {
+            let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell_D", for: indexPath) as! CollectionViewCell_D
+            let interest = interests[indexPath.item]
+            cell.interest = interest
+            cell.backgroundColor = UIColor.yellow
+            print("add items to (indexPath.item)")
+        return cell
+        }else{
-        collectionView.register(CollectionViewCell_S.self, forCellWithReuseIdentifier: "CollectionViewCell_S")
+            let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell_S", for: indexPath) as! CollectionViewCell_S
-        let layout = UICollectionViewFlowLayout()
+            let subCommittee = subCommittees[indexPath.item]
-        layout.scrollDirection = .vertical
+            cell.subCommittee = subCommittee
+            cell.backgroundColor = UIColor.green
+            print("add items to (indexPath.item)")
+        return cell
+        }
+    }
+    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
-    }
-    func numberOfSections(in collectionView: UICollectionView) -> Int {
-        return 2
-    }
-    func collectionView(_ collectionView : UICollectionView, numberOfItemsInSection section: Int) -> Int {
-        if section == 0 {
-            print("generated (interests.count) d-cells")
-            return interests.count
-        } else{
-            print("generated (subCommittees.count) s-cells")
-            return subCommittees.count
-        }
-    }
-    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
         if indexPath.section == 0 {
-            let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell_D", for: indexPath) as! CollectionViewCell_D
-            let interest = interests[indexPath.item]
+            let cellSize = self.view.bounds.width / 4
-            cell.interest = interest
-            print("add items to (indexPath.item)")
+            print("width: (cellSize)"+"height: 150")
-        return cell
+            return CGSize(width: cellSize, height: 150)
         }else{
-            let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell_S", for: indexPath) as! CollectionViewCell_S
-            let subCommittee = subCommittees[indexPath.item]
-            cell.subCommittee = subCommittee
-            print("add items to (indexPath.item)")
-        return cell
-        }
-    }
-    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
+            let cellSize : CGFloat = self.view.bounds.width - 16
+            print("width:(cellSize)"+"height: 150")
+            return CGSize(width: cellSize, height: 250)
+        }
+    }
+    func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView {
+        guard let header = collectionView.dequeueReusableSupplementaryView(ofKind: UICollectionView.elementKindSectionHeader, withReuseIdentifier: "SectionHeader", for: indexPath) as? SectionHeader else {
+            fatalError("Could not find proper header")
+        }
+        if kind == UICollectionView.elementKindSectionHeader {
+            if indexPath.section == 0 {
+                header.sectionLabel?.text = "討論会"
+            }else{
+                header.sectionLabel?.text = "分科会"
+            }
+            return header
+        }
+        return UICollectionReusableView()
+    }
+}
+```
+↓１つのcollectionViewに`CollectionViewCell_D`と`CollectionViewCell_S`を登録して使っておりますが同内容であるため文字数の都合上`CollectionViewCell_D`のみ掲載します
+```swift
+import UIKit
+class CollectionViewCell_D: UICollectionViewCell {
+    @IBOutlet weak var view_D: UIView!
+    @IBOutlet weak var imageView_D: UIImageView!
+    @IBOutlet weak var titile_D: UILabel!
+    var interest: Interest!{
+        didSet{
+            print(title_D)
+　　　　　　　// nilが返る
+            self.updateUI()
+        }
+    }
+    func updateUI() {
+        if let interest = interest {
+            imageView_D.image = interest.featuredImage
+            titile_D.text = interest.title
+            view_D.backgroundColor = interest.color
+        }else{
+            imageView_D.image = nil
+            titile_D.text = nil
+            view_D.backgroundColor = nil
+        }
+        view_D.layer.cornerRadius = 5.0
+        view_D.layer.masksToBounds = true
+        imageView_D.layer.cornerRadius = 5.0
+        imageView_D.layer.masksToBounds = true
-        if indexPath.section == 0 {
-            let cellSize = self.view.bounds.width / 4
-            print("width: (cellSize)"+"height: 150")
-            return CGSize(width: cellSize, height: 150)
-        }else{
-            let cellSize : CGFloat = self.view.bounds.width - 16
-            print("width:(cellSize)"+"height: 150")
-            return CGSize(width: cellSize, height: 250)
-        }
-    }
-    func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView {
-        guard let header = collectionView.dequeueReusableSupplementaryView(ofKind: UICollectionView.elementKindSectionHeader, withReuseIdentifier: "SectionHeader", for: indexPath) as? SectionHeader else {
-            fatalError("Could not find proper header")
-        }
-        if kind == UICollectionView.elementKindSectionHeader {
-            if indexPath.section == 0 {
-                header.sectionLabel?.text = "討論会"
-            }else{
-                header.sectionLabel?.text = "分科会"
-            }
-            return header
-        }
-        return UICollectionReusableView()
-    }
+    }
 }
-```
+```
-↓１つのcollectionViewに`CollectionViewCell_D`と`CollectionViewCell_S`を登録して使っておりますが同内容であるため文字数の都合上`CollectionViewCell_D`のみ掲載します
+↓データを扱うクラスは`Interest`と`Subcommittee`がありますが同内容であるため`Interest`のみ掲載させていただきます
-```swift
+```
 import UIKit
-class CollectionViewCell_D: UICollectionViewCell {
-    @IBOutlet weak var view_D: UIView!
-    @IBOutlet weak var imageView_D: UIImageView!
-    @IBOutlet weak var titile_D: UILabel!
-    var interest: Interest!{
+class Interest {
-        didSet{
+    var title = ""
+    var featuredImage: UIImage
+    var color: UIColor
+    init(title: String, featuredImage: UIImage, color: UIColor)
+    {
-            self.updateUI()
+        self.title = title
+        self.featuredImage = featuredImage
+        self.color = color
-        }
+    }
+    static func fetchInterest() -> [Interest]
+    {
+        return[
+            Interest(title: "How can we do to stop the war?", featuredImage: UIImage(named: "war")!, color: UIColor(red: 178/255.0, green: 98/255.0, blue: 71/255.0, alpha: 0.6)),
+            Interest(title: "Should we ban zoo?", featuredImage: UIImage(named: "animals")!, color: UIColor(red: 20/255.0, green: 98/255.0, blue: 71/255.0, alpha: 0.6)),
+            Interest(title: "Should we ban wearing the veil?", featuredImage: UIImage(named: "international")!, color: UIColor(red: 178/255.0, green: 98/255.0, blue: 71/255.0, alpha: 0.6)),
+            Interest(title: "Should we legalize all of th gambling?", featuredImage: UIImage(named: "politics")!, color: UIColor(red: 178/255.0, green: 98/255.0, blue: 71/255.0, alpha: 0.6)),
+            Interest(title: "How we reduce green house gas?", featuredImage: UIImage(named: "environment")!, color: UIColor(red: 178/255.0, green: 98/255.0, blue: 71/255.0, alpha: 0.6))
+        ]
-    }
+    }
-    func updateUI() {
-        if let interest = interest {
-            imageView_D.image = interest.featuredImage
-            titile_D.text = interest.title
-            view_D.backgroundColor = interest.color
-        }else{
-            imageView_D.image = nil
-            titile_D.text = nil
-            view_D.backgroundColor = nil
-        }
-        view_D.layer.cornerRadius = 5.0
-        view_D.layer.masksToBounds = true
-        imageView_D.layer.cornerRadius = 5.0
-        imageView_D.layer.masksToBounds = true
-    }
 }
-```
-↓データを扱うクラスは`Interest`と`Subcommittee`がありますが同内容であるため`Interest`のみ掲載させていただきます
-```
-import UIKit
-class Interest {
-    var title = ""
-    var featuredImage: UIImage
-    var color: UIColor
-    init(title: String, featuredImage: UIImage, color: UIColor)
-    {
-        self.title = title
-        self.featuredImage = featuredImage
-        self.color = color
-    }
-    static func fetchInterest() -> [Interest]
-    {
-        return[
-            Interest(title: "How can we do to stop the war?", featuredImage: UIImage(named: "war")!, color: UIColor(red: 178/255.0, green: 98/255.0, blue: 71/255.0, alpha: 0.6)),
-            Interest(title: "Should we ban zoo?", featuredImage: UIImage(named: "animals")!, color: UIColor(red: 20/255.0, green: 98/255.0, blue: 71/255.0, alpha: 0.6)),
-            Interest(title: "Should we ban wearing the veil?", featuredImage: UIImage(named: "international")!, color: UIColor(red: 178/255.0, green: 98/255.0, blue: 71/255.0, alpha: 0.6)),
-            Interest(title: "Should we legalize all of th gambling?", featuredImage: UIImage(named: "politics")!, color: UIColor(red: 178/255.0, green: 98/255.0, blue: 71/255.0, alpha: 0.6)),
-            Interest(title: "How we reduce green house gas?", featuredImage: UIImage(named: "environment")!, color: UIColor(red: 178/255.0, green: 98/255.0, blue: 71/255.0, alpha: 0.6))
-        ]
-    }
-}
 ```
 ### 自分が考えて実行したこと
@@ -342,9 +354,9 @@
 エラーが出たところをにオプショナルチェイニングをしました。すると
+![イメージ説明](ff2d8714b748f5637dd2b05254ccb2e9.png)
-![イメージ説明](673c0cd0ec3f87e6cf1dd5ec793df503.png)
+![イメージ説明](5591f9338bf04cd2f6fa4dbe46153eea.png)
-![ヒエラルキー](64bcecc42875e41edd61ea0d9482b4d7.png)
 提示させていただいたコードにあるprint文の出力は正常になされており、cellの数、大きさなどに異常はありませんがcellの部品は表示されていません