d

iOS/src/AppDelegate.swift

@@ -11,7 +11,7 @@ extension AppDelegate {
     didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
   ) -> Bool {
     window = UIWindow(frame: UIScreen.main.bounds)
-    window?.rootViewController = Main.VC()
+    window?.rootViewController = Main.Core()
     window?.makeKeyAndVisible()
 
     return true

iOS/src/Main.Platform.swift

@@ -1,7 +1,9 @@
 import UIKit
 
+// MARK: - Ядро-VC
+
 extension Main {
-  class VC: UIViewController {
+  class Core: UIViewController {
     var buttons = [UIButton]()
 
     override func viewDidLoad() {
@@ -10,6 +12,7 @@ extension Main {
       view.backgroundColor = .white
 
       Main.Section16Buttons.setupCore(self)
+      Main.SectionGrid.setupCore(self)
     }
   }
 }

iOS/src/Main.Section16Buttons.swift

@@ -0,0 +1,21 @@
+import UIKit
+
+// MARK: - Протоколы
+
+protocol MainSection16Buttons { }
+
+// MARK: - Реализация
+
+extension Main {
+  enum Section16Buttons {
+    static func setupCore(_ core: Main.Core) {
+      // Создаём 16 кнопок.
+      for i in 0..<16 {
+        let btn = UIButton()
+        btn.tag = i
+        core.view.addSubview(btn)
+        core.buttons.append(btn)
+      }
+    }
+  }
+}

iOS/src/Main.SectionGrid.swift

@@ -0,0 +1,25 @@
+import UIKit
+
+// MARK: - Протоколы
+
+protocol MainSectionGrid { }
+
+// MARK: - Реализация
+
+extension Main {
+  enum SectionGrid {
+    static func setupCore(_ core: Main.Core) {
+      let side = 50
+      let space = 20
+      let gap = side + space
+
+      // Расставляем кнопки в сетке 4x4.
+      for btn in core.buttons {
+        let id = btn.tag
+        let row = Int(id / 4)
+        btn.frame = CGRect(x: gap + (id - row * 4) * gap, y: gap + row * gap, width: side, height: side)
+        btn.backgroundColor = .blue
+      }
+    }
+  }
+}

iOS/src/Main/Main.Section16Buttons.swift

@@ -1,29 +0,0 @@
-import UIKit
-
-// MARK: - Протоколы
-
-protocol MainSection16Buttons {
-}
-
-// MARK: - Реализация
-
-extension Main {
-  enum Section16Buttons {
-    static func setupCore(_ core: Main.VC) {
-      // Создаём 16 кнопок.
-      for i in 0..<16 {
-        let btn = UIButton()
-        core.buttons.append(btn)
-        btn.tag = i
-        //????btn.addTarget(self, action: #selector(selectButton), for: .touchUpInside)
-        core.view.addSubview(btn)
-      }
-      
-      // Расставляем их в сетке 4x4.
-      for btn in core.buttons {
-        btn.frame = CGRect(x: 0, y: btn.tag * 60, width: 50, height: 50)
-        btn.backgroundColor = .blue
-      }
-    }
-  }
-}