Core Data with UIKit Quick Guide

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Core Data with UIKit

Swift 5.6 | iOS 15

With this guide, you will learn how to store data in a database with Core Data and the UIKit framework. After reading this guide, you will know how to work with the Core Data framework, how to create and manage a database, and how to store, search, and retrieve information from the user's device.

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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 store data in a database with Core Data and the UIKit framework. After reading this guide, you will know how to work with the Core Data framework, how to create and manage a database, and how to store, search, and retrieve information from the user's device.

Table of Contents

Core Data

Data Model

Core Data Stack

Managed Objects

Asynchronous Access

Storing Objects

Counting Objects

Predicates

Sort Descriptors

Modifying Objects

Deleting Objects

Fetched Results Controller

Search

Sections

To-Many Relationships

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: Defining the model to work with Core Data

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: Defining a model to manage books and authors

Listing 8: Listing authors

Listing 9: Inserting new authors

Listing 10: Counting the authors available

Listing 11: Counting the books of each author

Listing 12: Filtering books by year

Listing 13: Filtering books by author

Listing 14: Creating filters with placeholders

Listing 15: Creating filters with multiple values

Listing 16: Filtering values with predicate keywords

Listing 17: Checking for duplicates

Listing 18: Sorting the books by title

Listing 19: Sorting books by author and year

Listing 20: Sorting by title without differentiating between lowercase and uppercase letters

Listing 21: Sending the book selected by the user

Listing 22: Editing a book

Listing 23: Defining the request and the snapshot from the model

Listing 24: Implementing the protocol methods to delete a book

Listing 25: Deleting a book

Listing 26: Updating the model to work with a Fetched Results Controller

Listing 27: Working with a Fetched Results Controller

Listing 28: Working with objects identifiers

Listing 29: Searching for books by title

Listing 30: Organizing the Books objects in sections

Listing 31: Implementing the protocol method to get the sections' titles

Listing 32: Generating an index

Listing 33: Reading the values of a To-Many relationship

Listing 34: Assigning multiple authors per book

Listing 35: Selecting and deselecting authors

Listing 36: Fetching books by author

Listing 37: Systematically removing authors from books

Links

Core Data
https://developer.apple.com/documentation/coredata

NSPersistentContainer
https://developer.apple.com/reference/coredata/nspersistentcontainer

NSManagedObjectContext
https://developer.apple.com/reference/coredata/nsmanagedobjectcontext

NSManagedObject
https://developer.apple.com/reference/coredata/nsmanagedobject

NSFetchRequest
https://developer.apple.com/reference/coredata/nsfetchrequest

NSSortDescriptor
https://developer.apple.com/reference/foundation/nssortdescriptor

NSPredicate
https://developer.apple.com/reference/foundation/nspredicate

Tutorial Predicates
http://nshipster.com/nspredicate/

NSFetchedResultsController
https://developer.apple.com/reference/coredata/nsfetchedresultscontroller

NSFetchedResultsControllerDelegate
https://developer.apple.com/reference/coredata/nsfetchedresultscontrollerdelegate

Resources

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TABLE OF CONTENTS

Books

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