Complete iOS 12 Development Guide · Become a Professional iOS Developer by Mastering Swift, Xcode 10, ARKit, and Core ML by Clayton, Craig -- Read -- Imperial Library of Trantor

Index

Title Page Copyright and Credits

Complete iOS 12 Development Guide

About Packt

Why Subscribe? Packt.com

Contributors

About the authors Packt is searching for authors like you

Preface

Who this book is for What this book covers To get the most out of this book

Download the example code files Conventions used

Get in touch

Reviews

Getting Familiar with Xcode

Getting started The Xcode interface

Navigator panel Standard editor Utilities panel Debug panel Toolbar Generic iOS device iOS device Connecting wirelessly Window pane controls

Summary

Building a Foundation with Swift

Playgrounds – an interactive coding environment Data types – where it all starts

String Integer data type Floating-point numbers Booleans Variables and constants – where data is held

Creating a variable with a string Creating a variable with an integer (int) Debug and print() – detecting your bugs Adding floating-point numbers Creating a Boolean Why constants versus variables?

Comments – leaving yourself notes or reminders

Type safety and type inference

Concatenating strings String interpolation

Operations with our integers

Increment and decrement Comparison operators

Summary

Building on the Swift Foundation

Creating a Playground project The if statements – having fun with logic statements Optionals and optional bindings

Why optionals?

Functions Summary

Digging Deeper

Creating a Playground project Ranges

Closed range Half-closed range

Control flow

The for...in loop One-sided range The while loop The repeat...while loop

Summary

Digging into Collections

Arrays

Creating an empty array Creating an array with initial values Creating a mutable array Adding items to an array Checking the number of elements in an array Checking for an empty array Retrieving a value from an array Iterating over an array Removing items from an array

Dictionaries

Creating a dictionary Adding and updating dictionary elements Accessing an item in a dictionary Iterating over dictionary values Iterating over dictionary keys Iterating over dictionary keys and values Checking the number of items in a dictionary Removing items from a dictionary

Sets

Creating an empty set Creating a set with an array literal Creating a mutable set Adding items to a set Checking whether a set contains an item Iterating over a set Intersecting two sets Joining two sets Removing items from a set

Summary

Starting the UI Setup

Useful terms

View Controllers Table View Controllers Collection View Controllers Navigation Controllers Tab Bar Controllers Storyboards Segues Stack Views Auto Layout Model View Controller (MVC)

App tour

The Explore tab Locations Restaurant listings Restaurant detail The Map tab

Project setup

Creating a new project

Summary

Setting Up the Basic Structure

Starting from scratch Storyboard setup

Adding our app assets Storyboards

Creating our launch screen Adding a Navigation Controller

Summary

Building Our App Structure in Storyboard

Adding a Collection View Controller Hooking up our outlets Creating a custom color Setting up our cell Section header Updating the grid Adding a modal

Updating Bar Button Items Unwinding our Cancel button Adding our first Table View

Summary

Finishing Up Our App Structure in Storyboard

Adding our Restaurant List View Hooking up our outlets Setting up our cell Adding the Reviews View Viewing reviews  Map Kit View Summary 

Designing Cells

Setting up the Explore header  

Adding Auto Layout to the Explore header Setting up the Explore cell Adding Auto Layout to the Explore cell

Setting up the Restaurant cell

Adding Auto Layout to the Restaurant cell   The Locations cell 

Summary

Getting Started with the Grid

Understanding the Model View Controller architecture

Getting familiar with the setup

Classes and structures Controllers and classes

Understanding Collection Views Creating our controller Understanding Collection View controllers and Collection View cells Getting data into Collection View Understanding the data source

Summary

Adding Core Data to Your App

Understanding the Core Data Stack Adding Core Data to an existing application Creating a Core Data model

Creating the models Defining relationships Using your entities

Reading and writing data in a Core Data database

Understanding data persistence Persisting your models Refactoring the persistence code Reading data with a simple fetch request Filtering data with predicates Reacting to database changes

Implementing NSFetchedResultsController

Understanding the use of multiple instances of NSManagedObjectContext Summary Questions Further reading

Fetching and Displaying Data from the Network

Fetching data from the web

Understanding URLSession basics

Working with JSON in Swift Updating Core Data objects with fetched data

Implementing the fetch logic Updating a movie with a popularity rating Visualizing multiple threads

Wrapping the feature up

Adding the rating to the movie cell Understanding App Transport Security Observing changes to movie ratings

Summary Questions Further reading

Being Proactive with Background Fetch

Understanding how background fetch works

Looking at background fetch from a distance Looking at background fetch in more depth

Implementing the prerequisites for background fetch

Adding the background fetch capability Asking iOS to wake your app

Updating movies in the background

Updating the data model Refactoring the existing code

Updating movies in the background

Preparing the helper struct Updating the movies

Summary Test your knowledge Further reading

Syncing Data with CloudKit

Getting familiar with CloudKit

Adding CloudKit to your project Exploring the CloudKit dashboard

Understanding your CloudKit database Exploring the rest of your container

Storing and retrieving data with CloudKit

Communicating with CloudKit for the first time Listening for changes in the database Retrieving changes from CloudKit Configuring your AppDelegate Storing data in CloudKit

Combining CloudKit and Core Data

Preparing the Core Data models for CloudKit Importing CloudKit data Sending Core Data models to CloudKit

Summary Questions Further reading

Using Augmented Reality

Understanding ARKit

Understanding how ARKit renders content Understanding how ARKit tracks the physical environment

Using ARKit Quicklook

Implementing the ARKit Quicklook view controller

Exploring SpriteKit

Creating a SpriteKit scene

Exploring SceneKit

Creating a basic SceneKit scene

Implementing an Augmented Reality gallery

Adding image tracking

Preparing images for tracking Building the image-tracking experience

Placing your own content in 3D space

Summary Questions Further reading

Improving Apps With Location Services

Requesting a user's location

Asking for permission to access location data Obtaining a user's location

Subscribing to location changes Setting up geofences Summary Questions Further reading

Making Smarter Apps with CoreML

Understanding machine learning and CoreML

Understanding what machine learning is Understanding CoreML

Obtaining CoreML models Using a CoreML model

Combining CoreML and computer vision

Understanding the Vision framework Implementing an image classifier

Training your own models with CreateML

Training a natural language model Training a Vision model

Summary Questions Further reading

Tracking Activity Using HealthKit

Understanding HealthKit

Requesting access to the HealthKit Store Storing and retrieving data with HealthKit

Implementing a workout app Summary Questions Further reading

Streamlining Experiences with Siri

Understanding intents Implementing an intents extension

Understanding app extensions Configuring your extension Adding vocabularies to your app

Adding vocabularies through a .plist file Teaching Siri new vocabularies at runtime

Handling intents in your extension

Resolving the user's input Confirming the intent status Performing the desired action

Adding a custom UI to Siri Implementing Siri Shortcuts

Implementing shortcuts through NSUserActivity Donating shortcuts with INinteractions

Summary Questions Further reading

Using Media in Your App

Playing audio and video

Creating a simple video player Creating an audio player

Implementing basic audio controls Implementing the time scrubber Displaying song metadata

Playing media in the background

Recording video and taking pictures

Taking and storing a picture Recording and storing video

Manipulating photos with Core Image Summary Questions Further reading

Implementing Rich Notifications

Gaining a deep understanding of notifications Scheduling and handling notifications

Registering for notifications Creating notification contents

Creating push notifications Creating local notifications

Scheduling your notification

Scheduling a timed notification Scheduling a calendar-based notification Scheduling a location-based notification

Handling notifications

Handling notifications in your app Managing pending and delivered notifications Adding actions to notifications

Implementing grouped notifications

Grouping notifications based on thread identifiers Providing a custom summary message for your notification group

Implementing notification extensions

Adding a service extension to your app Adding a content extension to your app

Summary Questions Further reading

Instant Information with a Today Extension

Understanding the anatomy of a Today Extension

Finding Today Extensions in iOS Understanding Today Extensions

Adding a Today Extension to your app Summary Questions Further reading

Exchanging Data With Drag And Drop

Understanding the drag and drop experience

Understanding UIDragInteractionDelegate Understanding UIDropInteractionDelegate

Implementing a basic drag and drop functionality

Adding drag and drop to a plain UIView Adding drag and drop to a UICollectionView

Customizing the drag and drop experience Summary Questions Further reading

Improved Discoverability with Spotlight and Universal Links

Understanding Spotlight search Adding your app contents to the Spotlight index

Indexing your app through user activity Indexing with CSSearchableItem

Containing information in CSSearchableItemAttributeSet Adding CSSearchableItem instances to the search index Safely combining indexing methods Handling searchable item selection

Understanding Spotlight best practices and ratings

Adding metadata to your web links Registering as an indexing delegate

Increasing your app's visibility with Universal Links

Preparing your server for Universal Links Handling Universal Links in your app

Summary Questions Further reading

Extending iMessage

Understanding iMessage apps Creating an iMessage sticker pack

Optimizing assets for your stickers Creating a custom sticker app

Implementing custom, interactive iMessage apps

Understanding the iMessage app life cycle Implementing the custom compact view Implementing the expanded view

Understanding sessions, messages, and conversations

Composing a message Sending a message

Summary Questions Further reading

Discovering Bottlenecks with Instruments

Exploring the Instruments suite Discovering slow code Closing memory leaks

Understanding what a memory leak is

Preventing objects from using infinite memory Avoiding reference cycles

Discovering memory leaks

Creating your own Instrument

Adding signpost logging to your app Building an Instruments Package

Summary Questions Further reading

Offloading Tasks with Operations and GCD

Writing asynchronous code

Understanding threads Using dispatch queues in your application

Creating reusable tasks with Operations

Using Operations in your apps

Summary Questions Further reading

Submitting Your App to the App Store

Adding your application to App Store Connect Packaging and uploading your app for beta testing Preparing your app for launch Summary Further reading

Appendix

Chapter 12  Chapter 13 Chapter 14 Chapter 15 Chapter 16 Chapter 17 Chapter 18 Chapter 19 Chapter 20 Chapter 21 Chapter 22  Chapter 23 Chapter 24 Chapter 25 Chapter 26 Chapter 27 Chapter 28 

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