├── final ├── CollectionViewLayoutExample │ ├── Support │ │ ├── Assets.xcassets │ │ │ ├── Contents.json │ │ │ └── AppIcon.appiconset │ │ │ │ └── Contents.json │ │ ├── SceneDelegate.swift │ │ ├── AppDelegate.swift │ │ ├── Base.lproj │ │ │ └── LaunchScreen.storyboard │ │ └── Info.plist │ ├── Views │ │ ├── GridColletionViewCell.swift │ │ └── GridSuplementaryView.swift │ ├── MainViewController.swift │ └── GridCollectionViewLayout.swift └── CollectionViewLayoutExample.xcodeproj │ ├── project.xcworkspace │ ├── contents.xcworkspacedata │ ├── xcuserdata │ │ └── fernando.moyaderivas.xcuserdatad │ │ │ └── UserInterfaceState.xcuserstate │ └── xcshareddata │ │ └── IDEWorkspaceChecks.plist │ ├── xcuserdata │ └── fernando.moyaderivas.xcuserdatad │ │ ├── xcdebugger │ │ └── Breakpoints_v2.xcbkptlist │ │ └── xcschemes │ │ └── xcschememanagement.plist │ └── project.pbxproj └── starter ├── CollectionViewLayoutExample ├── Support │ ├── Assets.xcassets │ │ ├── Contents.json │ │ └── AppIcon.appiconset │ │ │ └── Contents.json │ ├── SceneDelegate.swift │ ├── AppDelegate.swift │ ├── Base.lproj │ │ └── LaunchScreen.storyboard │ └── Info.plist ├── Views │ ├── GridColletionViewCell.swift │ └── GridSuplementaryView.swift └── MainViewController.swift └── CollectionViewLayoutExample.xcodeproj ├── project.xcworkspace ├── contents.xcworkspacedata ├── xcuserdata │ └── fernando.moyaderivas.xcuserdatad │ │ └── UserInterfaceState.xcuserstate └── xcshareddata │ └── IDEWorkspaceChecks.plist ├── xcuserdata └── fernando.moyaderivas.xcuserdatad │ ├── xcdebugger │ └── Breakpoints_v2.xcbkptlist │ └── xcschemes │ └── xcschememanagement.plist └── project.pbxproj /final/CollectionViewLayoutExample/Support/Assets.xcassets/Contents.json: -------------------------------------------------------------------------------- 1 | { 2 | "info" : { 3 | "author" : "xcode", 4 | "version" : 1 5 | } 6 | } 7 | -------------------------------------------------------------------------------- /starter/CollectionViewLayoutExample/Support/Assets.xcassets/Contents.json: -------------------------------------------------------------------------------- 1 | { 2 | "info" : { 3 | "author" : "xcode", 4 | "version" : 1 5 | } 6 | } 7 | -------------------------------------------------------------------------------- /final/CollectionViewLayoutExample.xcodeproj/project.xcworkspace/contents.xcworkspacedata: -------------------------------------------------------------------------------- 1 | 2 | 4 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /final/CollectionViewLayoutExample.xcodeproj/xcuserdata/fernando.moyaderivas.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist: -------------------------------------------------------------------------------- 1 | 2 | 6 | 7 | -------------------------------------------------------------------------------- /starter/CollectionViewLayoutExample.xcodeproj/project.xcworkspace/contents.xcworkspacedata: -------------------------------------------------------------------------------- 1 | 2 | 4 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /starter/CollectionViewLayoutExample.xcodeproj/xcuserdata/fernando.moyaderivas.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist: -------------------------------------------------------------------------------- 1 | 2 | 6 | 7 | -------------------------------------------------------------------------------- /final/CollectionViewLayoutExample.xcodeproj/project.xcworkspace/xcuserdata/fernando.moyaderivas.xcuserdatad/UserInterfaceState.xcuserstate: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/fermoya/CollectionViewLayoutExample/HEAD/final/CollectionViewLayoutExample.xcodeproj/project.xcworkspace/xcuserdata/fernando.moyaderivas.xcuserdatad/UserInterfaceState.xcuserstate -------------------------------------------------------------------------------- /starter/CollectionViewLayoutExample.xcodeproj/project.xcworkspace/xcuserdata/fernando.moyaderivas.xcuserdatad/UserInterfaceState.xcuserstate: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/fermoya/CollectionViewLayoutExample/HEAD/starter/CollectionViewLayoutExample.xcodeproj/project.xcworkspace/xcuserdata/fernando.moyaderivas.xcuserdatad/UserInterfaceState.xcuserstate -------------------------------------------------------------------------------- /final/CollectionViewLayoutExample.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | IDEDidComputeMac32BitWarning 6 | 7 | 8 | 9 | -------------------------------------------------------------------------------- /starter/CollectionViewLayoutExample.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | IDEDidComputeMac32BitWarning 6 | 7 | 8 | 9 | -------------------------------------------------------------------------------- /final/CollectionViewLayoutExample.xcodeproj/xcuserdata/fernando.moyaderivas.xcuserdatad/xcschemes/xcschememanagement.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | SchemeUserState 6 | 7 | CollectionViewLayoutExample.xcscheme_^#shared#^_ 8 | 9 | orderHint 10 | 0 11 | 12 | 13 | 14 | 15 | -------------------------------------------------------------------------------- /starter/CollectionViewLayoutExample.xcodeproj/xcuserdata/fernando.moyaderivas.xcuserdatad/xcschemes/xcschememanagement.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | SchemeUserState 6 | 7 | CollectionViewLayoutExample.xcscheme_^#shared#^_ 8 | 9 | orderHint 10 | 0 11 | 12 | 13 | 14 | 15 | -------------------------------------------------------------------------------- /final/CollectionViewLayoutExample/Support/SceneDelegate.swift: -------------------------------------------------------------------------------- 1 | // 2 | // SceneDelegate.swift 3 | // CollectionViewLayoutExample 4 | // 5 | // Created by Fernando Moya de Rivas on 05/04/2020. 6 | // Copyright © 2020 Fernando Moya de Rivas. All rights reserved. 7 | // 8 | 9 | import UIKit 10 | 11 | class SceneDelegate: UIResponder, UIWindowSceneDelegate { 12 | 13 | var window: UIWindow? 14 | 15 | func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) { 16 | 17 | if let windowScene = scene as? UIWindowScene { 18 | let window = UIWindow(windowScene: windowScene) 19 | window.rootViewController = MainViewController() 20 | self.window = window 21 | window.makeKeyAndVisible() 22 | } 23 | 24 | } 25 | 26 | } 27 | 28 | -------------------------------------------------------------------------------- /starter/CollectionViewLayoutExample/Support/SceneDelegate.swift: -------------------------------------------------------------------------------- 1 | // 2 | // SceneDelegate.swift 3 | // CollectionViewLayoutExample 4 | // 5 | // Created by Fernando Moya de Rivas on 05/04/2020. 6 | // Copyright © 2020 Fernando Moya de Rivas. All rights reserved. 7 | // 8 | 9 | import UIKit 10 | 11 | class SceneDelegate: UIResponder, UIWindowSceneDelegate { 12 | 13 | var window: UIWindow? 14 | 15 | func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) { 16 | 17 | if let windowScene = scene as? UIWindowScene { 18 | let window = UIWindow(windowScene: windowScene) 19 | window.rootViewController = MainViewController() 20 | self.window = window 21 | window.makeKeyAndVisible() 22 | } 23 | 24 | } 25 | 26 | } 27 | 28 | -------------------------------------------------------------------------------- /final/CollectionViewLayoutExample/Views/GridColletionViewCell.swift: -------------------------------------------------------------------------------- 1 | // 2 | // MattrixColletionViewCell.swift 3 | // CollectionViewLayoutExample 4 | // 5 | // Created by Fernando Moya de Rivas on 13/04/2020. 6 | // Copyright © 2020 Fernando Moya de Rivas. All rights reserved. 7 | // 8 | 9 | import UIKit 10 | 11 | class GridColletionViewCell: UICollectionViewCell { 12 | 13 | var text: String = "" { 14 | didSet { 15 | titlelLabel.text = text 16 | } 17 | } 18 | 19 | private var titlelLabel: UILabel = { 20 | let label = UILabel() 21 | label.textColor = .white 22 | label.font = .systemFont(ofSize: 11) 23 | label.numberOfLines = 0 24 | label.textAlignment = .left 25 | return label 26 | }() 27 | 28 | override func didMoveToWindow() { 29 | super.didMoveToWindow() 30 | if contentView.subviews.isEmpty { contentView.addSubview(titlelLabel) } 31 | } 32 | 33 | override func layoutSubviews() { 34 | super.layoutSubviews() 35 | titlelLabel.frame = contentView.bounds 36 | } 37 | 38 | } 39 | 40 | -------------------------------------------------------------------------------- /starter/CollectionViewLayoutExample/Views/GridColletionViewCell.swift: -------------------------------------------------------------------------------- 1 | // 2 | // MattrixColletionViewCell.swift 3 | // CollectionViewLayoutExample 4 | // 5 | // Created by Fernando Moya de Rivas on 13/04/2020. 6 | // Copyright © 2020 Fernando Moya de Rivas. All rights reserved. 7 | // 8 | 9 | import UIKit 10 | 11 | class GridColletionViewCell: UICollectionViewCell { 12 | 13 | var text: String = "" { 14 | didSet { 15 | titlelLabel.text = text 16 | } 17 | } 18 | 19 | private var titlelLabel: UILabel = { 20 | let label = UILabel() 21 | label.textColor = .white 22 | label.font = .systemFont(ofSize: 11) 23 | label.numberOfLines = 0 24 | label.textAlignment = .left 25 | return label 26 | }() 27 | 28 | override func didMoveToWindow() { 29 | super.didMoveToWindow() 30 | if contentView.subviews.isEmpty { contentView.addSubview(titlelLabel) } 31 | } 32 | 33 | override func layoutSubviews() { 34 | super.layoutSubviews() 35 | titlelLabel.frame = contentView.bounds 36 | } 37 | 38 | } 39 | 40 | -------------------------------------------------------------------------------- /final/CollectionViewLayoutExample/Support/AppDelegate.swift: -------------------------------------------------------------------------------- 1 | // 2 | // AppDelegate.swift 3 | // CollectionViewLayoutExample 4 | // 5 | // Created by Fernando Moya de Rivas on 05/04/2020. 6 | // Copyright © 2020 Fernando Moya de Rivas. All rights reserved. 7 | // 8 | 9 | import UIKit 10 | 11 | @UIApplicationMain 12 | class AppDelegate: UIResponder, UIApplicationDelegate { 13 | 14 | func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool { 15 | // Override point for customization after application launch. 16 | return true 17 | } 18 | 19 | // MARK: UISceneSession Lifecycle 20 | 21 | func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration { 22 | // Called when a new scene session is being created. 23 | // Use this method to select a configuration to create the new scene with. 24 | return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role) 25 | } 26 | 27 | } 28 | 29 | -------------------------------------------------------------------------------- /starter/CollectionViewLayoutExample/Support/AppDelegate.swift: -------------------------------------------------------------------------------- 1 | // 2 | // AppDelegate.swift 3 | // CollectionViewLayoutExample 4 | // 5 | // Created by Fernando Moya de Rivas on 05/04/2020. 6 | // Copyright © 2020 Fernando Moya de Rivas. All rights reserved. 7 | // 8 | 9 | import UIKit 10 | 11 | @UIApplicationMain 12 | class AppDelegate: UIResponder, UIApplicationDelegate { 13 | 14 | func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool { 15 | // Override point for customization after application launch. 16 | return true 17 | } 18 | 19 | // MARK: UISceneSession Lifecycle 20 | 21 | func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration { 22 | // Called when a new scene session is being created. 23 | // Use this method to select a configuration to create the new scene with. 24 | return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role) 25 | } 26 | 27 | } 28 | 29 | -------------------------------------------------------------------------------- /final/CollectionViewLayoutExample/Views/GridSuplementaryView.swift: -------------------------------------------------------------------------------- 1 | // 2 | // SectionTitleView.swift 3 | // CollectionViewLayoutExample 4 | // 5 | // Created by Fernando Moya de Rivas on 05/04/2020. 6 | // Copyright © 2020 Fernando Moya de Rivas. All rights reserved. 7 | // 8 | 9 | import UIKit 10 | 11 | class GridSuplementaryView: UICollectionReusableView { 12 | 13 | var title: String? { 14 | set { 15 | titleLabel.text = newValue 16 | } 17 | get { titleLabel.text } 18 | } 19 | 20 | private lazy var titleLabel: UILabel = { 21 | let label = UILabel() 22 | label.translatesAutoresizingMaskIntoConstraints = false 23 | label.textColor = .systemGray 24 | label.font = .systemFont(ofSize: 25, weight: .medium) 25 | return label 26 | }() 27 | 28 | override func didMoveToWindow() { 29 | super.didMoveToWindow() 30 | 31 | guard subviews.isEmpty else { return } 32 | 33 | addSubview(titleLabel) 34 | NSLayoutConstraint.activate([ 35 | titleLabel.centerYAnchor.constraint(equalTo: centerYAnchor), 36 | titleLabel.leadingAnchor.constraint(equalTo: leadingAnchor, constant: 16) 37 | ]) 38 | } 39 | 40 | } 41 | -------------------------------------------------------------------------------- /starter/CollectionViewLayoutExample/Views/GridSuplementaryView.swift: -------------------------------------------------------------------------------- 1 | // 2 | // SectionTitleView.swift 3 | // CollectionViewLayoutExample 4 | // 5 | // Created by Fernando Moya de Rivas on 05/04/2020. 6 | // Copyright © 2020 Fernando Moya de Rivas. All rights reserved. 7 | // 8 | 9 | import UIKit 10 | 11 | class GridSuplementaryView: UICollectionReusableView { 12 | 13 | var title: String? { 14 | set { 15 | titleLabel.text = newValue 16 | } 17 | get { titleLabel.text } 18 | } 19 | 20 | private lazy var titleLabel: UILabel = { 21 | let label = UILabel() 22 | label.translatesAutoresizingMaskIntoConstraints = false 23 | label.textColor = .systemGray 24 | label.font = .systemFont(ofSize: 25, weight: .medium) 25 | return label 26 | }() 27 | 28 | override func didMoveToWindow() { 29 | super.didMoveToWindow() 30 | 31 | guard subviews.isEmpty else { return } 32 | 33 | addSubview(titleLabel) 34 | NSLayoutConstraint.activate([ 35 | titleLabel.centerYAnchor.constraint(equalTo: centerYAnchor), 36 | titleLabel.leadingAnchor.constraint(equalTo: leadingAnchor, constant: 16) 37 | ]) 38 | } 39 | 40 | } 41 | -------------------------------------------------------------------------------- /final/CollectionViewLayoutExample/Support/Base.lproj/LaunchScreen.storyboard: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | -------------------------------------------------------------------------------- /starter/CollectionViewLayoutExample/Support/Base.lproj/LaunchScreen.storyboard: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | -------------------------------------------------------------------------------- /final/CollectionViewLayoutExample/Support/Assets.xcassets/AppIcon.appiconset/Contents.json: -------------------------------------------------------------------------------- 1 | { 2 | "images" : [ 3 | { 4 | "idiom" : "iphone", 5 | "scale" : "2x", 6 | "size" : "20x20" 7 | }, 8 | { 9 | "idiom" : "iphone", 10 | "scale" : "3x", 11 | "size" : "20x20" 12 | }, 13 | { 14 | "idiom" : "iphone", 15 | "scale" : "2x", 16 | "size" : "29x29" 17 | }, 18 | { 19 | "idiom" : "iphone", 20 | "scale" : "3x", 21 | "size" : "29x29" 22 | }, 23 | { 24 | "idiom" : "iphone", 25 | "scale" : "2x", 26 | "size" : "40x40" 27 | }, 28 | { 29 | "idiom" : "iphone", 30 | "scale" : "3x", 31 | "size" : "40x40" 32 | }, 33 | { 34 | "idiom" : "iphone", 35 | "scale" : "2x", 36 | "size" : "60x60" 37 | }, 38 | { 39 | "idiom" : "iphone", 40 | "scale" : "3x", 41 | "size" : "60x60" 42 | }, 43 | { 44 | "idiom" : "ipad", 45 | "scale" : "1x", 46 | "size" : "20x20" 47 | }, 48 | { 49 | "idiom" : "ipad", 50 | "scale" : "2x", 51 | "size" : "20x20" 52 | }, 53 | { 54 | "idiom" : "ipad", 55 | "scale" : "1x", 56 | "size" : "29x29" 57 | }, 58 | { 59 | "idiom" : "ipad", 60 | "scale" : "2x", 61 | "size" : "29x29" 62 | }, 63 | { 64 | "idiom" : "ipad", 65 | "scale" : "1x", 66 | "size" : "40x40" 67 | }, 68 | { 69 | "idiom" : "ipad", 70 | "scale" : "2x", 71 | "size" : "40x40" 72 | }, 73 | { 74 | "idiom" : "ipad", 75 | "scale" : "1x", 76 | "size" : "76x76" 77 | }, 78 | { 79 | "idiom" : "ipad", 80 | "scale" : "2x", 81 | "size" : "76x76" 82 | }, 83 | { 84 | "idiom" : "ipad", 85 | "scale" : "2x", 86 | "size" : "83.5x83.5" 87 | }, 88 | { 89 | "idiom" : "ios-marketing", 90 | "scale" : "1x", 91 | "size" : "1024x1024" 92 | } 93 | ], 94 | "info" : { 95 | "author" : "xcode", 96 | "version" : 1 97 | } 98 | } 99 | -------------------------------------------------------------------------------- /starter/CollectionViewLayoutExample/Support/Assets.xcassets/AppIcon.appiconset/Contents.json: -------------------------------------------------------------------------------- 1 | { 2 | "images" : [ 3 | { 4 | "idiom" : "iphone", 5 | "scale" : "2x", 6 | "size" : "20x20" 7 | }, 8 | { 9 | "idiom" : "iphone", 10 | "scale" : "3x", 11 | "size" : "20x20" 12 | }, 13 | { 14 | "idiom" : "iphone", 15 | "scale" : "2x", 16 | "size" : "29x29" 17 | }, 18 | { 19 | "idiom" : "iphone", 20 | "scale" : "3x", 21 | "size" : "29x29" 22 | }, 23 | { 24 | "idiom" : "iphone", 25 | "scale" : "2x", 26 | "size" : "40x40" 27 | }, 28 | { 29 | "idiom" : "iphone", 30 | "scale" : "3x", 31 | "size" : "40x40" 32 | }, 33 | { 34 | "idiom" : "iphone", 35 | "scale" : "2x", 36 | "size" : "60x60" 37 | }, 38 | { 39 | "idiom" : "iphone", 40 | "scale" : "3x", 41 | "size" : "60x60" 42 | }, 43 | { 44 | "idiom" : "ipad", 45 | "scale" : "1x", 46 | "size" : "20x20" 47 | }, 48 | { 49 | "idiom" : "ipad", 50 | "scale" : "2x", 51 | "size" : "20x20" 52 | }, 53 | { 54 | "idiom" : "ipad", 55 | "scale" : "1x", 56 | "size" : "29x29" 57 | }, 58 | { 59 | "idiom" : "ipad", 60 | "scale" : "2x", 61 | "size" : "29x29" 62 | }, 63 | { 64 | "idiom" : "ipad", 65 | "scale" : "1x", 66 | "size" : "40x40" 67 | }, 68 | { 69 | "idiom" : "ipad", 70 | "scale" : "2x", 71 | "size" : "40x40" 72 | }, 73 | { 74 | "idiom" : "ipad", 75 | "scale" : "1x", 76 | "size" : "76x76" 77 | }, 78 | { 79 | "idiom" : "ipad", 80 | "scale" : "2x", 81 | "size" : "76x76" 82 | }, 83 | { 84 | "idiom" : "ipad", 85 | "scale" : "2x", 86 | "size" : "83.5x83.5" 87 | }, 88 | { 89 | "idiom" : "ios-marketing", 90 | "scale" : "1x", 91 | "size" : "1024x1024" 92 | } 93 | ], 94 | "info" : { 95 | "author" : "xcode", 96 | "version" : 1 97 | } 98 | } 99 | -------------------------------------------------------------------------------- /final/CollectionViewLayoutExample/Support/Info.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | CFBundleDevelopmentRegion 6 | $(DEVELOPMENT_LANGUAGE) 7 | CFBundleExecutable 8 | $(EXECUTABLE_NAME) 9 | CFBundleIdentifier 10 | $(PRODUCT_BUNDLE_IDENTIFIER) 11 | CFBundleInfoDictionaryVersion 12 | 6.0 13 | CFBundleName 14 | $(PRODUCT_NAME) 15 | CFBundlePackageType 16 | $(PRODUCT_BUNDLE_PACKAGE_TYPE) 17 | CFBundleShortVersionString 18 | 1.0 19 | CFBundleVersion 20 | 1 21 | LSRequiresIPhoneOS 22 | 23 | UIApplicationSceneManifest 24 | 25 | UIApplicationSupportsMultipleScenes 26 | 27 | UISceneConfigurations 28 | 29 | UIWindowSceneSessionRoleApplication 30 | 31 | 32 | UISceneConfigurationName 33 | Default Configuration 34 | UISceneDelegateClassName 35 | $(PRODUCT_MODULE_NAME).SceneDelegate 36 | 37 | 38 | 39 | 40 | UILaunchStoryboardName 41 | LaunchScreen 42 | UIRequiredDeviceCapabilities 43 | 44 | armv7 45 | 46 | UISupportedInterfaceOrientations 47 | 48 | UIInterfaceOrientationPortrait 49 | UIInterfaceOrientationLandscapeLeft 50 | UIInterfaceOrientationLandscapeRight 51 | 52 | UISupportedInterfaceOrientations~ipad 53 | 54 | UIInterfaceOrientationPortrait 55 | UIInterfaceOrientationPortraitUpsideDown 56 | UIInterfaceOrientationLandscapeLeft 57 | UIInterfaceOrientationLandscapeRight 58 | 59 | 60 | 61 | -------------------------------------------------------------------------------- /starter/CollectionViewLayoutExample/Support/Info.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | CFBundleDevelopmentRegion 6 | $(DEVELOPMENT_LANGUAGE) 7 | CFBundleExecutable 8 | $(EXECUTABLE_NAME) 9 | CFBundleIdentifier 10 | $(PRODUCT_BUNDLE_IDENTIFIER) 11 | CFBundleInfoDictionaryVersion 12 | 6.0 13 | CFBundleName 14 | $(PRODUCT_NAME) 15 | CFBundlePackageType 16 | $(PRODUCT_BUNDLE_PACKAGE_TYPE) 17 | CFBundleShortVersionString 18 | 1.0 19 | CFBundleVersion 20 | 1 21 | LSRequiresIPhoneOS 22 | 23 | UIApplicationSceneManifest 24 | 25 | UIApplicationSupportsMultipleScenes 26 | 27 | UISceneConfigurations 28 | 29 | UIWindowSceneSessionRoleApplication 30 | 31 | 32 | UISceneConfigurationName 33 | Default Configuration 34 | UISceneDelegateClassName 35 | $(PRODUCT_MODULE_NAME).SceneDelegate 36 | 37 | 38 | 39 | 40 | UILaunchStoryboardName 41 | LaunchScreen 42 | UIRequiredDeviceCapabilities 43 | 44 | armv7 45 | 46 | UISupportedInterfaceOrientations 47 | 48 | UIInterfaceOrientationPortrait 49 | UIInterfaceOrientationLandscapeLeft 50 | UIInterfaceOrientationLandscapeRight 51 | 52 | UISupportedInterfaceOrientations~ipad 53 | 54 | UIInterfaceOrientationPortrait 55 | UIInterfaceOrientationPortraitUpsideDown 56 | UIInterfaceOrientationLandscapeLeft 57 | UIInterfaceOrientationLandscapeRight 58 | 59 | 60 | 61 | -------------------------------------------------------------------------------- /starter/CollectionViewLayoutExample/MainViewController.swift: -------------------------------------------------------------------------------- 1 | // 2 | // ViewController.swift 3 | // CollectionViewLayoutExample 4 | // 5 | // Created by Fernando Moya de Rivas on 05/04/2020. 6 | // Copyright © 2020 Fernando Moya de Rivas. All rights reserved. 7 | // 8 | 9 | import UIKit 10 | 11 | class MainViewController: UICollectionViewController { 12 | 13 | private let numberOfSections = 4 14 | private let numberOfItemsInSection = [13, 10, 9, 16] 15 | private let cellIdentifier = "SpannableCollectionViewExampleCell" 16 | private let headerIdentifier = "SpannableCollectionViewExampleHeader" 17 | private let footerIdentifier = "SpannableCollectionViewExampleFooter" 18 | 19 | private let columnSpans = [[1, 1, 1, 1], [2, 2], [3, 1], [1, 2, 1]] 20 | 21 | init() { 22 | let layout = UICollectionViewFlowLayout() 23 | super.init(collectionViewLayout: layout) 24 | layout.headerReferenceSize = CGSize(width: view.bounds.size.width, height: 40) 25 | layout.footerReferenceSize = CGSize(width: view.bounds.size.width, height: 40) 26 | } 27 | 28 | required init?(coder: NSCoder) { 29 | fatalError("init(coder:) has not been implemented") 30 | } 31 | 32 | override func viewDidLoad() { 33 | super.viewDidLoad() 34 | 35 | collectionView.register(GridColletionViewCell.self, forCellWithReuseIdentifier: cellIdentifier) 36 | collectionView.register(GridSuplementaryView.self, forSupplementaryViewOfKind: UICollectionView.elementKindSectionHeader, withReuseIdentifier: headerIdentifier) 37 | collectionView.register(GridSuplementaryView.self, forSupplementaryViewOfKind: UICollectionView.elementKindSectionFooter, withReuseIdentifier: footerIdentifier) 38 | } 39 | 40 | private func colorForCell(at indexPath: IndexPath) -> UIColor { 41 | let colors: [UIColor] = [.blue, .brown, .green, .red] 42 | return colors[indexPath.row % colors.count] 43 | } 44 | 45 | } 46 | 47 | // MARK: UICollectionViewDataSource 48 | 49 | extension MainViewController { 50 | 51 | override func numberOfSections(in collectionView: UICollectionView) -> Int { 52 | return numberOfSections 53 | } 54 | 55 | override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int { 56 | return numberOfItemsInSection[section] 57 | } 58 | 59 | override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell { 60 | let cell = collectionView.dequeueReusableCell(withReuseIdentifier: cellIdentifier, for: indexPath) as! GridColletionViewCell 61 | cell.text = "(\(indexPath.section),\(indexPath.row))" 62 | cell.backgroundColor = colorForCell(at: indexPath) 63 | return cell 64 | } 65 | 66 | } 67 | 68 | // MARK: UICollectionViewDelegate 69 | 70 | extension MainViewController { 71 | 72 | override func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView { 73 | 74 | let identifier = kind == UICollectionView.elementKindSectionHeader ? headerIdentifier : footerIdentifier 75 | guard let view = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: identifier, for: indexPath) as? GridSuplementaryView else { fatalError("Couldn't dequeue UICollectionView header") } 76 | 77 | let title = kind == UICollectionView.elementKindSectionHeader ? "Header" : "Footer" 78 | 79 | view.title = title 80 | return view 81 | } 82 | 83 | } 84 | -------------------------------------------------------------------------------- /final/CollectionViewLayoutExample/MainViewController.swift: -------------------------------------------------------------------------------- 1 | // 2 | // ViewController.swift 3 | // CollectionViewLayoutExample 4 | // 5 | // Created by Fernando Moya de Rivas on 05/04/2020. 6 | // Copyright © 2020 Fernando Moya de Rivas. All rights reserved. 7 | // 8 | 9 | import UIKit 10 | 11 | class MainViewController: UICollectionViewController { 12 | 13 | private let numberOfSections = 4 14 | private let numberOfItemsInSection = [13, 10, 9, 16] 15 | private let cellIdentifier = "SpannableCollectionViewExampleCell" 16 | private let headerIdentifier = "SpannableCollectionViewExampleHeader" 17 | private let footerIdentifier = "SpannableCollectionViewExampleFooter" 18 | 19 | private let columnSpans = [[1, 1, 1, 1], [2, 2], [3, 1], [1, 2, 1]] 20 | private let alignments: [GridCollectionViewLayout.Alignment] = [.top, .bottom, .center, .top] 21 | 22 | init() { 23 | let layout = GridCollectionViewLayout(numberOfColumns: 4) 24 | super.init(collectionViewLayout: layout) 25 | layout.delegate = self 26 | } 27 | 28 | required init?(coder: NSCoder) { 29 | fatalError("init(coder:) has not been implemented") 30 | } 31 | 32 | override func viewDidLoad() { 33 | super.viewDidLoad() 34 | 35 | collectionView.register(GridColletionViewCell.self, forCellWithReuseIdentifier: cellIdentifier) 36 | collectionView.register(GridSuplementaryView.self, forSupplementaryViewOfKind: GridCollectionViewLayout.ElementKind.header.rawValue, withReuseIdentifier: headerIdentifier) 37 | collectionView.register(GridSuplementaryView.self, forSupplementaryViewOfKind: GridCollectionViewLayout.ElementKind.footer.rawValue, withReuseIdentifier: footerIdentifier) 38 | } 39 | 40 | private func colorForCell(at indexPath: IndexPath) -> UIColor { 41 | let colors: [UIColor] = [.blue, .brown, .green, .red] 42 | return colors[indexPath.row % colors.count] 43 | } 44 | 45 | } 46 | 47 | // MARK: UICollectionViewDataSource 48 | 49 | extension MainViewController { 50 | 51 | override func numberOfSections(in collectionView: UICollectionView) -> Int { 52 | return numberOfSections 53 | } 54 | 55 | override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int { 56 | return numberOfItemsInSection[section] 57 | } 58 | 59 | override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell { 60 | let cell = collectionView.dequeueReusableCell(withReuseIdentifier: cellIdentifier, for: indexPath) as! GridColletionViewCell 61 | cell.text = "(\(indexPath.section),\(indexPath.row))" 62 | cell.backgroundColor = colorForCell(at: indexPath) 63 | return cell 64 | } 65 | 66 | } 67 | 68 | // MARK: UICollectionViewDelegate 69 | 70 | extension MainViewController { 71 | 72 | override func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView { 73 | guard let elementKind = GridCollectionViewLayout.ElementKind(rawValue: kind) else { fatalError("Unknown element kind") } 74 | guard elementKind != .cell else { fatalError("Suplementary cell can't be a cell") } 75 | 76 | let identifier = elementKind == .header ? headerIdentifier : footerIdentifier 77 | guard let view = collectionView.dequeueReusableSupplementaryView(ofKind: elementKind.rawValue, withReuseIdentifier: identifier, for: indexPath) as? GridSuplementaryView else { fatalError("Couldn't dequeue UICollectionView header") } 78 | 79 | let alignment = self.collectionView(collectionView, alignmentForSection: indexPath.section) 80 | let title = elementKind == .header ? "Section \(indexPath.section + 1): \(columnSpans[indexPath.section])" : "alignment \(alignment.rawValue)" 81 | 82 | view.title = title 83 | return view 84 | } 85 | 86 | } 87 | 88 | // MARK: SpannableCollectionViewLayoutDelegate 89 | 90 | extension MainViewController: GridCollectionViewLayoutDelegate { 91 | 92 | func collectionView(_ collectionView: UICollectionView, heightForItemAt index: GridIndex, indexPath: IndexPath) -> CGFloat { 93 | let columnHeight = self.collectionView(collectionView, heightForRow: index.row) 94 | return (index.column + index.row).isMultiple(of: 4) ? columnHeight : columnHeight - 20 95 | } 96 | 97 | func collectionView(_ collectionView: UICollectionView, heightForRow row: Int) -> CGFloat { 98 | return row.isMultiple(of: 2) ? 100 : 60 99 | } 100 | 101 | func collectionView(_ collectionView: UICollectionView, heightForSupplementaryView kind: GridCollectionViewLayout.ElementKind, at section: Int) -> CGFloat? { 102 | return 40 103 | } 104 | 105 | func collectionView(_ collectionView: UICollectionView, alignmentForSection section: Int) -> GridCollectionViewLayout.Alignment { 106 | return alignments[section] 107 | } 108 | 109 | 110 | func collectionView(_ collectionView: UICollectionView, columnSpanForItemAt index: GridIndex, indexPath: IndexPath) -> Int { 111 | let spans = columnSpans[indexPath.section] 112 | let span = spans[indexPath.row % spans.count] 113 | return span 114 | } 115 | 116 | } 117 | -------------------------------------------------------------------------------- /final/CollectionViewLayoutExample/GridCollectionViewLayout.swift: -------------------------------------------------------------------------------- 1 | // 2 | // SpannableCollectionViewLayout.swift 3 | // CollectionViewLayoutExample 4 | // 5 | // Created by Fernando Moya de Rivas on 05/04/2020. 6 | // Copyright © 2020 Fernando Moya de Rivas. All rights reserved. 7 | // 8 | 9 | import UIKit 10 | 11 | protocol GridCollectionViewLayoutDelegate: class { 12 | func collectionView(_ collectionView: UICollectionView, columnSpanForItemAt index: GridIndex, indexPath: IndexPath) -> Int 13 | func collectionView(_ collectionView: UICollectionView, heightForItemAt index: GridIndex, indexPath: IndexPath) -> CGFloat 14 | func collectionView(_ collectionView: UICollectionView, heightForRow row: Int) -> CGFloat 15 | func collectionView(_ collectionView: UICollectionView, heightForSupplementaryView kind: GridCollectionViewLayout.ElementKind, at section: Int) -> CGFloat? 16 | func collectionView(_ collectionView: UICollectionView, alignmentForSection section: Int) -> GridCollectionViewLayout.Alignment 17 | } 18 | 19 | class GridLayoutAttributes: UICollectionViewLayoutAttributes { 20 | var index: GridIndex? 21 | } 22 | 23 | struct GridIndex { 24 | let row: Int 25 | let column: Int 26 | } 27 | 28 | class GridCollectionViewLayout: UICollectionViewLayout { 29 | 30 | enum Alignment: String { 31 | case top, bottom, center 32 | } 33 | 34 | enum ElementKind: String { 35 | case header = "elementKindHeader" 36 | case footer = "elementKindFooter" 37 | case cell = "elementKindCell" 38 | } 39 | 40 | weak var delegate: GridCollectionViewLayoutDelegate? 41 | 42 | var cellAlignment: Alignment = .center 43 | var columnSpacing: CGFloat = 8 44 | var rowSpacing: CGFloat = 16 45 | var sectionSpacing: CGFloat = 32 46 | 47 | var estimatedColumnSpan = 1 48 | var estimatedCellHeight: CGFloat = 60 49 | 50 | private(set) var numberOfColumns: Int 51 | private var attributes: [ElementKind: [IndexPath: GridLayoutAttributes]] = [:] 52 | 53 | init(numberOfColumns: Int) { 54 | self.numberOfColumns = numberOfColumns 55 | super.init() 56 | } 57 | 58 | required init?(coder: NSCoder) { 59 | self.numberOfColumns = coder.value(forKey: "numberOfColumns") as? Int ?? 3 60 | super.init(coder: coder) 61 | } 62 | 63 | private var collectionViewWidth: CGFloat { 64 | guard let collectionView = collectionView else { return .zero } 65 | return collectionView.bounds.width - (collectionView.contentInset.left + collectionView.contentInset.right) 66 | } 67 | 68 | private var collectionViewHeight: CGFloat = 0 69 | 70 | override var collectionViewContentSize: CGSize { 71 | return CGSize(width: collectionViewWidth, height: collectionViewHeight) 72 | } 73 | 74 | private func reset() { 75 | self.attributes = [.cell: [:], .header: [:], .footer: [:]] 76 | } 77 | 78 | override func prepare() { 79 | super.prepare() 80 | 81 | guard let collectionView = collectionView else { return } 82 | guard attributes.isEmpty else { return } 83 | guard numberOfColumns > 0 else { return } 84 | 85 | reset() 86 | 87 | let numberOfSections = collectionView.numberOfSections 88 | (0.. 0 { 108 | let columnWidth = (collectionViewWidth - CGFloat(numberOfColumns - 1) * columnSpacing) / CGFloat(numberOfColumns) 109 | let columnHeight = delegate?.collectionView(collectionView, heightForRow: row) ?? estimatedCellHeight 110 | 111 | var availableSpan = numberOfColumns 112 | (0.. 0, availableSpan + column == numberOfColumns else { return } 115 | let indexPath = IndexPath(item: itemIndex, section: section) 116 | let index = GridIndex(row: row, column: column) 117 | 118 | let cellSpan = min(availableSpan, delegate?.collectionView(collectionView, columnSpanForItemAt: index, indexPath: indexPath) ?? estimatedColumnSpan) 119 | 120 | let cellWidth = columnWidth * CGFloat(cellSpan) + CGFloat(cellSpan - 1) * columnSpacing 121 | let cellHeight = min(columnHeight, delegate?.collectionView(collectionView, heightForItemAt: index, indexPath: indexPath) ?? estimatedCellHeight) 122 | 123 | let cellXPosition = CGFloat(column) * (columnWidth + columnSpacing) 124 | let cellYPosition: CGFloat 125 | switch alignment { 126 | case .top: 127 | cellYPosition = collectionViewHeight 128 | case .bottom: 129 | cellYPosition = collectionViewHeight + (columnHeight - cellHeight) 130 | case .center: 131 | cellYPosition = collectionViewHeight + (columnHeight - cellHeight) / 2 132 | } 133 | 134 | let cellOrigin = CGPoint(x: cellXPosition, y: cellYPosition) 135 | let cellSize = CGSize(width: cellWidth, height: cellHeight) 136 | 137 | let attributes = GridLayoutAttributes(forCellWith: indexPath) 138 | attributes.index = index 139 | attributes.frame = CGRect(origin: cellOrigin, size: cellSize) 140 | 141 | self.attributes[.cell]?[indexPath] = attributes 142 | 143 | itemIndex += 1 144 | availableSpan -= cellSpan 145 | } 146 | 147 | row += 1 148 | collectionViewHeight += columnHeight 149 | 150 | guard itemIndex < itemsCount else { continue } 151 | collectionViewHeight += rowSpacing 152 | } 153 | } 154 | 155 | private func prepareSuplementaryView(kind: ElementKind, at section: Int) { 156 | guard let collectionView = collectionView else { return } 157 | guard let height = delegate?.collectionView(collectionView, heightForSupplementaryView: kind, at: section) else { return } 158 | 159 | let indexPath = IndexPath(row: 0, section: section) 160 | let attributes = GridLayoutAttributes(forSupplementaryViewOfKind: kind.rawValue, with: indexPath) 161 | attributes.frame = CGRect(x: 0, y: collectionViewHeight, width: collectionViewWidth, height: height) 162 | self.attributes[kind]?[indexPath] = attributes 163 | 164 | collectionViewHeight += height 165 | } 166 | 167 | override func invalidateLayout() { 168 | super.invalidateLayout() 169 | collectionViewHeight = 0 170 | attributes.removeAll() 171 | } 172 | 173 | override func layoutAttributesForElements(in rect: CGRect) -> [UICollectionViewLayoutAttributes]? { 174 | return attributes.values.flatMap { $0.values }.filter { $0.frame.intersects(rect) } 175 | } 176 | 177 | override func layoutAttributesForSupplementaryView(ofKind elementKind: String, at indexPath: IndexPath) -> UICollectionViewLayoutAttributes? { 178 | guard let kind = ElementKind(rawValue: elementKind) else { return nil } 179 | return attributes[kind]?[indexPath] 180 | } 181 | 182 | override func layoutAttributesForItem(at indexPath: IndexPath) -> UICollectionViewLayoutAttributes? { 183 | return attributes[.cell]?[indexPath] 184 | } 185 | 186 | override public func shouldInvalidateLayout(forBoundsChange newBounds: CGRect) -> Bool { 187 | guard let oldBounds = collectionView?.bounds else { return false } 188 | return oldBounds.size != newBounds.size 189 | } 190 | 191 | } 192 | -------------------------------------------------------------------------------- /starter/CollectionViewLayoutExample.xcodeproj/project.pbxproj: -------------------------------------------------------------------------------- 1 | // !$*UTF8*$! 2 | { 3 | archiveVersion = 1; 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