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This implementation + creates and returns a container, having loaded the store for the + application to it. This property is optional since there are legitimate + error conditions that could cause the creation of the store to fail. + */ + let container = NSPersistentContainer(name: "CoreDataApp") + container.loadPersistentStores(completionHandler: { (storeDescription, error) in + if let error = error as NSError? { + // Replace this implementation with code to handle the error appropriately. + // fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development. + + /* + Typical reasons for an error here include: + * The parent directory does not exist, cannot be created, or disallows writing. + * The persistent store is not accessible, due to permissions or data protection when the device is locked. + * The device is out of space. + * The store could not be migrated to the current model version. + Check the error message to determine what the actual problem was. + */ + fatalError("Unresolved error \(error), \(error.userInfo)") + } + }) + return container + }() + + // MARK: - Core Data Saving support + + func saveContext () { + let context = persistentContainer.viewContext + if context.hasChanges { + do { + try context.save() + } catch { + // Replace this implementation with code to handle the error appropriately. + // fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development. + let nserror = error as NSError + fatalError("Unresolved error \(nserror), \(nserror.userInfo)") + } + } + } + +} + diff --git a/CoreDataApp/Assets.xcassets/AccentColor.colorset/Contents.json b/CoreDataApp/Assets.xcassets/AccentColor.colorset/Contents.json new file mode 100644 index 0000000..eb87897 --- /dev/null +++ b/CoreDataApp/Assets.xcassets/AccentColor.colorset/Contents.json @@ -0,0 +1,11 @@ +{ + "colors" : [ + { + "idiom" : "universal" + } + ], + "info" : { + "author" : "xcode", + "version" : 1 + } +} diff --git a/CoreDataApp/Assets.xcassets/AppIcon.appiconset/Contents.json b/CoreDataApp/Assets.xcassets/AppIcon.appiconset/Contents.json new file mode 100644 index 0000000..9221b9b --- /dev/null +++ b/CoreDataApp/Assets.xcassets/AppIcon.appiconset/Contents.json @@ -0,0 +1,98 @@ +{ + "images" : [ + { + "idiom" : "iphone", + "scale" : "2x", + "size" : "20x20" + }, + { + "idiom" : "iphone", + "scale" : "3x", + "size" : "20x20" + }, + { + "idiom" : "iphone", + "scale" : "2x", + "size" : "29x29" + }, + { + "idiom" : "iphone", + "scale" : "3x", + "size" : "29x29" + }, + { + "idiom" : "iphone", + "scale" : "2x", + "size" : "40x40" + }, + { + "idiom" : "iphone", + "scale" : "3x", + "size" : "40x40" + }, + { + "idiom" : "iphone", + "scale" : "2x", + "size" : "60x60" + }, + { + "idiom" : "iphone", + "scale" : "3x", + "size" : "60x60" + }, + { + "idiom" : "ipad", + "scale" : "1x", + "size" : "20x20" + }, + { + "idiom" : "ipad", + "scale" : "2x", + "size" : "20x20" + }, + { + "idiom" : "ipad", + "scale" : "1x", + "size" : "29x29" + }, + { + "idiom" : "ipad", + "scale" : "2x", + "size" : "29x29" + }, + { + "idiom" : "ipad", + "scale" : "1x", + "size" : "40x40" + }, + { + "idiom" : "ipad", + "scale" : "2x", + "size" : "40x40" + }, + { + "idiom" : "ipad", + "scale" : "1x", + "size" : "76x76" + }, + { + "idiom" : "ipad", + "scale" : "2x", + "size" : "76x76" + }, + { + "idiom" : "ipad", + "scale" : "2x", + "size" : "83.5x83.5" + }, + { + "idiom" : "ios-marketing", + "scale" : "1x", + "size" : "1024x1024" + } + ], + "info" : { + "author" : "xcode", + "version" : 1 + } +} diff --git a/CoreDataApp/Assets.xcassets/Contents.json b/CoreDataApp/Assets.xcassets/Contents.json new file mode 100644 index 0000000..73c0059 --- /dev/null +++ b/CoreDataApp/Assets.xcassets/Contents.json @@ -0,0 +1,6 @@ +{ + "info" : { + "author" : "xcode", + "version" : 1 + } +} diff --git a/CoreDataApp/Assets.xcassets/Spa.imageset/Contents.json b/CoreDataApp/Assets.xcassets/Spa.imageset/Contents.json new file mode 100644 index 0000000..42378de --- /dev/null +++ b/CoreDataApp/Assets.xcassets/Spa.imageset/Contents.json @@ -0,0 +1,21 @@ +{ + "images" : [ + { + "filename" : "Unknown.jpeg", + "idiom" : "universal", + "scale" : "1x" + }, + { + "idiom" : "universal", + "scale" : "2x" + }, + { + "idiom" : "universal", + "scale" : "3x" + } + ], + "info" : { + "author" : "xcode", + "version" : 1 + } +} diff --git a/CoreDataApp/Assets.xcassets/Spa.imageset/Unknown.jpeg b/CoreDataApp/Assets.xcassets/Spa.imageset/Unknown.jpeg new file mode 100644 index 0000000..eb09a72 Binary files /dev/null and b/CoreDataApp/Assets.xcassets/Spa.imageset/Unknown.jpeg differ diff --git a/CoreDataApp/Base.lproj/LaunchScreen.storyboard b/CoreDataApp/Base.lproj/LaunchScreen.storyboard new file mode 100644 index 0000000..865e932 --- /dev/null +++ b/CoreDataApp/Base.lproj/LaunchScreen.storyboard @@ -0,0 +1,25 @@ + + + + + + + + + + + + + + + + + + + + + + + + + diff --git a/CoreDataApp/Base.lproj/Main.storyboard b/CoreDataApp/Base.lproj/Main.storyboard new file mode 100644 index 0000000..ab02148 --- /dev/null +++ b/CoreDataApp/Base.lproj/Main.storyboard @@ -0,0 +1,73 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + diff --git a/CoreDataApp/CoreDataApp.xcdatamodeld/.xccurrentversion b/CoreDataApp/CoreDataApp.xcdatamodeld/.xccurrentversion new file mode 100644 index 0000000..7ef0a43 --- /dev/null +++ b/CoreDataApp/CoreDataApp.xcdatamodeld/.xccurrentversion @@ -0,0 +1,8 @@ + + + + + _XCCurrentVersionName + CoreDataApp.xcdatamodel + + diff --git a/CoreDataApp/CoreDataApp.xcdatamodeld/CoreDataApp.xcdatamodel/contents b/CoreDataApp/CoreDataApp.xcdatamodeld/CoreDataApp.xcdatamodel/contents new file mode 100644 index 0000000..89d2cf4 --- /dev/null +++ b/CoreDataApp/CoreDataApp.xcdatamodeld/CoreDataApp.xcdatamodel/contents @@ -0,0 +1,9 @@ + + + + + + + + + \ No newline at end of file diff --git a/CoreDataApp/Info.plist b/CoreDataApp/Info.plist new file mode 100644 index 0000000..dd3c9af --- /dev/null +++ b/CoreDataApp/Info.plist @@ -0,0 +1,25 @@ + + + + + UIApplicationSceneManifest + + UIApplicationSupportsMultipleScenes + + UISceneConfigurations + + UIWindowSceneSessionRoleApplication + + + UISceneConfigurationName + Default Configuration + UISceneDelegateClassName + $(PRODUCT_MODULE_NAME).SceneDelegate + UISceneStoryboardFile + Main + + + + + + diff --git a/CoreDataApp/SceneDelegate.swift b/CoreDataApp/SceneDelegate.swift new file mode 100644 index 0000000..5991e5d --- /dev/null +++ b/CoreDataApp/SceneDelegate.swift @@ -0,0 +1,55 @@ +// +// SceneDelegate.swift +// CoreDataApp +// +// Created by Um Talal 2030 on 27/11/2021. +// + +import UIKit + +class SceneDelegate: UIResponder, UIWindowSceneDelegate { + + var window: UIWindow? + + + func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) { + // Use this method to optionally configure and attach the UIWindow `window` to the provided UIWindowScene `scene`. + // If using a storyboard, the `window` property will automatically be initialized and attached to the scene. + // This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead). + guard let _ = (scene as? UIWindowScene) else { return } + } + + func sceneDidDisconnect(_ scene: UIScene) { + // Called as the scene is being released by the system. + // This occurs shortly after the scene enters the background, or when its session is discarded. + // Release any resources associated with this scene that can be re-created the next time the scene connects. + // The scene may re-connect later, as its session was not necessarily discarded (see `application:didDiscardSceneSessions` instead). + } + + func sceneDidBecomeActive(_ scene: UIScene) { + // Called when the scene has moved from an inactive state to an active state. + // Use this method to restart any tasks that were paused (or not yet started) when the scene was inactive. + } + + func sceneWillResignActive(_ scene: UIScene) { + // Called when the scene will move from an active state to an inactive state. + // This may occur due to temporary interruptions (ex. an incoming phone call). + } + + func sceneWillEnterForeground(_ scene: UIScene) { + // Called as the scene transitions from the background to the foreground. + // Use this method to undo the changes made on entering the background. + } + + func sceneDidEnterBackground(_ scene: UIScene) { + // Called as the scene transitions from the foreground to the background. + // Use this method to save data, release shared resources, and store enough scene-specific state information + // to restore the scene back to its current state. + + // Save changes in the application's managed object context when the application transitions to the background. + (UIApplication.shared.delegate as? AppDelegate)?.saveContext() + } + + +} + diff --git a/CoreDataApp/ViewController.swift b/CoreDataApp/ViewController.swift new file mode 100644 index 0000000..fef0f2c --- /dev/null +++ b/CoreDataApp/ViewController.swift @@ -0,0 +1,100 @@ + +import UIKit + +import CoreData + +class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate { + + + let context = (UIApplication.shared.delegate as! AppDelegate).persistentContainer.viewContext + + var listItemArray = [ListItem]() + @IBOutlet weak var tableView: UITableView! + + + override func viewDidLoad() { + super.viewDidLoad() + + loadData() + } + + func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int { + return listItemArray.count + } + + func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell { + let cell = tableView.dequeueReusableCell(withIdentifier: "ItemCell", for: indexPath) + cell.backgroundColor = .clear + cell.textLabel?.text = listItemArray[indexPath.row].name + + return cell + } + + func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) { + + + var textField = UITextField() + let alert = UIAlertController(title: "Change ListService Name", message: "", preferredStyle: .alert) + let action = UIAlertAction(title: "Update Service", style: .default) { (action) in + self.listItemArray[indexPath.row].setValue(textField.text, forKey: "name") + self.saveData() + } + alert.addAction(action) + alert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil)) + alert.addTextField { (alertTextField) in + alertTextField.placeholder = "New Item Here" + textField = alertTextField + } + present(alert, animated: true, completion: nil) + } + + func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCell.EditingStyle, forRowAt indexPath: IndexPath) { + if (editingStyle == .delete) { + // handle delete (by removing the data from your array and updating the tableview) + + context.delete(listItemArray[indexPath.row]) + listItemArray.remove(at: indexPath.row) + saveData() + } + } + @IBAction func addButtonPressed(_ sender: Any) { + var textField = UITextField() + let alert = UIAlertController(title: "Choose a new Service", message: "", preferredStyle: .alert) + let action = UIAlertAction(title: "Add Service", style: .default) { (action) in + let newItem = ListItem(context: self.context) + + newItem.name = textField.text + self.listItemArray.append(newItem) + self.saveData() + } + alert.addAction(action) + alert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil)) + alert.addTextField { (alertTextField) in + alertTextField.placeholder = "New Service Here" + textField = alertTextField + } + present(alert, animated: true, completion: nil) + + } + + func saveData() { + do { + try context.save() + } catch { + print("Error saving context \(error)") + } + tableView.reloadData() + } + + func loadData() { + let request : NSFetchRequest = ListItem.fetchRequest() + + do { + listItemArray = try context.fetch(request) + } catch { + print("Error loading data \(error)") + } + tableView.reloadData() + } + } +