iOS 12 Programming for Beginners - Third Edition

Core Data manager 

As we have done throughout this book, we are going to create a Manager class. This class will be responsible for getting data in and out of Core Data. Let's get started:

1. Right-click the Core Data folder in the Common folder and select New File.
2. Inside the Choose a template for your new file screen, select iOS at the top, and then Cocoa Touch Class. Then, hit Next.
3. In the options screen that appears, add the following:

New file:

• • Class: CoreDataManager
  • Subclass: NSObject
  • Also create XIB: Unchecked
  • Language: Swift

4. Click Next and then Create.

When the file opens, under your import UIKit, add the following:

import CoreData

This import allows us to have access to the Core Data library. Next, inside the class definition, ...