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All rights reserved. +// + +import UIKit + +@UIApplicationMain +class AppDelegate: UIResponder, UIApplicationDelegate { + + var window: UIWindow? + + + func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool { + // Override point for customization after application launch. + return true + } + + func applicationWillResignActive(_ application: UIApplication) { + // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state. + // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game. + } + + func applicationDidEnterBackground(_ application: UIApplication) { + // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later. + // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits. + } + + func applicationWillEnterForeground(_ application: UIApplication) { + // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background. + } + + func applicationDidBecomeActive(_ application: UIApplication) { + // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface. + } + + func applicationWillTerminate(_ application: UIApplication) { + // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:. + } + + +} + diff --git a/JSONEncoding/JSONEncoding/Assets.xcassets/AppIcon.appiconset/Contents.json b/JSONEncoding/JSONEncoding/Assets.xcassets/AppIcon.appiconset/Contents.json new file mode 100644 index 0000000..d8db8d6 --- /dev/null +++ b/JSONEncoding/JSONEncoding/Assets.xcassets/AppIcon.appiconset/Contents.json @@ -0,0 +1,98 @@ +{ + "images" : [ + { + "idiom" : "iphone", + "size" : "20x20", + "scale" : "2x" + }, + { + "idiom" : "iphone", + "size" : "20x20", + "scale" : "3x" + }, + { + "idiom" : "iphone", + "size" : "29x29", + "scale" : "2x" + }, + { + "idiom" : "iphone", + "size" : "29x29", + "scale" : "3x" + }, + { + "idiom" : "iphone", + "size" : "40x40", + "scale" : "2x" + }, + { + "idiom" : "iphone", + "size" : "40x40", + "scale" : "3x" + }, + { + "idiom" : "iphone", + "size" : "60x60", + "scale" : "2x" + }, + { + "idiom" : "iphone", + "size" : "60x60", + "scale" : "3x" + }, + { + "idiom" : "ipad", + "size" : "20x20", + "scale" : "1x" + }, + { + "idiom" : "ipad", + "size" : "20x20", + "scale" : "2x" + }, + { + "idiom" : "ipad", + "size" : "29x29", + "scale" : "1x" + }, + { + "idiom" : "ipad", + "size" : "29x29", + "scale" : "2x" + }, + { + "idiom" : "ipad", + "size" : "40x40", + "scale" : "1x" + }, + { + "idiom" : "ipad", + "size" : "40x40", + "scale" : "2x" + }, + { + "idiom" : "ipad", + "size" : "76x76", + "scale" : "1x" + }, + { + "idiom" : "ipad", + "size" : "76x76", + "scale" : "2x" + }, + { + "idiom" : "ipad", + "size" : "83.5x83.5", + "scale" : "2x" + }, + { + "idiom" : "ios-marketing", + "size" : "1024x1024", + "scale" : "1x" + } + ], + "info" : { + "version" : 1, + "author" : "xcode" + } +} \ No newline at end of file diff --git a/JSONEncoding/JSONEncoding/Assets.xcassets/Contents.json b/JSONEncoding/JSONEncoding/Assets.xcassets/Contents.json new file mode 100644 index 0000000..da4a164 --- /dev/null +++ b/JSONEncoding/JSONEncoding/Assets.xcassets/Contents.json @@ -0,0 +1,6 @@ +{ + "info" : { + "version" : 1, + "author" : "xcode" + } +} \ No newline at end of file diff --git a/JSONEncoding/JSONEncoding/Base.lproj/LaunchScreen.storyboard b/JSONEncoding/JSONEncoding/Base.lproj/LaunchScreen.storyboard new file mode 100644 index 0000000..bfa3612 --- /dev/null +++ b/JSONEncoding/JSONEncoding/Base.lproj/LaunchScreen.storyboard @@ -0,0 +1,25 @@ + + + + + + + + + + + + + + + + + + + + + + + + + diff --git a/JSONEncoding/JSONEncoding/Base.lproj/Main.storyboard b/JSONEncoding/JSONEncoding/Base.lproj/Main.storyboard new file mode 100644 index 0000000..3518a65 --- /dev/null +++ b/JSONEncoding/JSONEncoding/Base.lproj/Main.storyboard @@ -0,0 +1,101 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + diff --git a/JSONEncoding/JSONEncoding/Info.plist b/JSONEncoding/JSONEncoding/Info.plist new file mode 100644 index 0000000..16be3b6 --- /dev/null +++ b/JSONEncoding/JSONEncoding/Info.plist @@ -0,0 +1,45 @@ + + + + + CFBundleDevelopmentRegion + $(DEVELOPMENT_LANGUAGE) + CFBundleExecutable + $(EXECUTABLE_NAME) + CFBundleIdentifier + $(PRODUCT_BUNDLE_IDENTIFIER) + CFBundleInfoDictionaryVersion + 6.0 + CFBundleName + $(PRODUCT_NAME) + CFBundlePackageType + APPL + CFBundleShortVersionString + 1.0 + CFBundleVersion + 1 + LSRequiresIPhoneOS + + UILaunchStoryboardName + LaunchScreen + UIMainStoryboardFile + Main + UIRequiredDeviceCapabilities + + armv7 + + UISupportedInterfaceOrientations + + UIInterfaceOrientationPortrait + UIInterfaceOrientationLandscapeLeft + UIInterfaceOrientationLandscapeRight + + UISupportedInterfaceOrientations~ipad + + UIInterfaceOrientationPortrait + UIInterfaceOrientationPortraitUpsideDown + UIInterfaceOrientationLandscapeLeft + UIInterfaceOrientationLandscapeRight + + + diff --git a/JSONEncoding/JSONEncoding/Student.swift b/JSONEncoding/JSONEncoding/Student.swift new file mode 100644 index 0000000..ec51651 --- /dev/null +++ b/JSONEncoding/JSONEncoding/Student.swift @@ -0,0 +1,26 @@ +// +// Student.swift +// JSONEncoding +// +// Created by Nikita Thomas on 10/11/18. +// Copyright © 2018 Nikita Thomas. All rights reserved. +// + +import Foundation + +struct Student: CustomStringConvertible, Codable { + var description: String { + var result = "Name: \(name)" + if let age = age { + result += ", Age: \(age)" + } + if let cohort = cohort { + result += ", Cohort: \(cohort)." + } + return result + } + + let name: String + let age: Int? + let cohort: String? +} diff --git a/JSONEncoding/JSONEncoding/StudentManager.swift b/JSONEncoding/JSONEncoding/StudentManager.swift new file mode 100644 index 0000000..1a752d5 --- /dev/null +++ b/JSONEncoding/JSONEncoding/StudentManager.swift @@ -0,0 +1,42 @@ +// +// StudentManager.swift +// JSONEncoding +// +// Created by Nikita Thomas on 10/11/18. +// Copyright © 2018 Nikita Thomas. All rights reserved. +// + +import Foundation + +class StudentManager: NSObject { + var students: [Student] = [] + + let url = URL(fileURLWithPath: NSHomeDirectory()) + .appendingPathComponent("Documents") + .appendingPathComponent("students.json") + + func writeToFile() { + do { + let studentsEncoded = try JSONEncoder().encode(students) + try studentsEncoded.write(to: url) + + } catch { + print("Error: \(error)") + } + } + + func readFromFile() { + do { + let data = try Data(contentsOf: url) + let studentsDecoded = try JSONDecoder().decode([Student].self, from: data) + students = studentsDecoded + } catch { + print("Error: \(error)") + } + } + + func create(name: String, age: Int?, cohort: String?) { + let student = Student.init(name: name, age: age, cohort: cohort) + students.append(student) + } +} diff --git a/JSONEncoding/JSONEncoding/ViewController.swift b/JSONEncoding/JSONEncoding/ViewController.swift new file mode 100644 index 0000000..29d6352 --- /dev/null +++ b/JSONEncoding/JSONEncoding/ViewController.swift @@ -0,0 +1,43 @@ +// +// ViewController.swift +// JSONEncoding +// +// Created by Nikita Thomas on 10/11/18. +// Copyright © 2018 Nikita Thomas. All rights reserved. +// + +import UIKit + +class ViewController: UIViewController { + + @IBOutlet weak var nameText: UITextField! + @IBOutlet weak var ageText: UITextField! + @IBOutlet weak var cohortText: UITextField! + let studentManager = StudentManager() + + @IBAction func saveButton(_ sender: Any) { + guard let name = nameText.text else {return} + guard let age = ageText.text else {return} + guard let cohort = cohortText.text else {return} + studentManager.create(name: name, age: Int(age), cohort: cohort) + studentManager.writeToFile() + } + + @IBAction func printButton(_ sender: Any) { + print(studentManager.students) + + } + + + override func viewWillAppear(_ animated: Bool) { + super.viewWillAppear(animated) + studentManager.readFromFile() + } + + @IBAction func deleteButton(_ sender: Any) { + studentManager.students = [] + studentManager.writeToFile() + } + +} +