Core Data in iOS 12 Quick Guide

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Core Data in iOS 12

Swift 4.2 | iOS 12

Learn how to use Core Data to create an manage a database for your iOS applications. After reading this guide, you will know how to create a database, how to store, search, and retrieve information, and how to migrate data from an old database to a new one.

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Description

Quick Guides for Masterminds are excerpts from our best-selling books SwiftUI for Masterminds, UIKit for Masterminds, and HTML5 for Masterminds, providing a cost-effective alternative to getting the information you need.

With this guide, you will learn how to use Core Data to create an manage a database for your iOS applications. After reading this guide, you will know how to create a database, how to store, search, and retrieve information, and how to migrate data from an old database to a new one.

Table of Contents

Custom Object Graph

Data Model

Core Data Stack

Managed Object

Managing Objects

Counting Objects

Predicates

Sort Descriptors

Delete Objects

Fetched Results Controller

Sections

Search

Migration

Examples

Download TXT Files - Download Projects

Listing 1: Initializing the Core Data stack in the app's delegate

Listing 2: Accessing the context from a view controller

Listing 3: Creating the Outlets for the elements in the prototype cell

Listing 4: Adding new objects to the Persistent Store

Listing 5: Fetching values from the Persistent Store

Listing 6: Adding an author to the book

Listing 7: Listing authors

Listing 8: Inserting new authors

Listing 9: Converting images into raw data

Listing 10: Getting back the images from data

Listing 11: Counting the authors available

Listing 12: Counting the books of each author

Listing 13: Filtering books by year

Listing 14: Filtering books by author

Listing 15: Creating filters with placeholders

Listing 16: Creating filters with multiple values

Listing 17: Filtering values with predicate keywords

Listing 18: Checking for duplicates

Listing 19: Sorting the books by title

Listing 20: Sorting books by author and year

Listing 21: Sorting by title without differentiating between lowercase and uppercase letters

Listing 22: Deleting a book

Listing 23: Fetching objects with an NSFetchedResultsController object

Listing 24: Updating the table

Listing 25: Updating the table all at once

Listing 26: Organizing the Books objects in sections

Listing 27: Implementing the necessary protocol methods to work with sections

Listing 28: Generating an index

Listing 29: Searching books

Links

Tutorial Predicates

NSPersistentContainer

NSManagedObjectContext

NSManagedObject

NSSortDescriptor

NSFetchedResultsController

NSFetchedResultsControllerDelegate

Using File Wrappers

Packaged Document for iOS with NSFileWrapper

Resources

Download Resources

TABLE OF CONTENTS

Books

For Masterminds books include everything you need to develop professional applications. Create amazing websites and insanely great apps for iPhones, iPads and Mac computers.