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iOS Programming Cookbook
iOS Programming Cookbook

iOS Programming Cookbook: Over 50 exciting and powerful recipes to help you unearth the promise of iOS programming

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iOS Programming Cookbook

Working with navigation controller and navigation bar


In iOS, we have multiple native view controllers that manage list of other view controllers, such as UINavigationController, UITabBarViewController, or UIPageViewController. Navigation controller is one of the most common controllers used to manage list of view controllers, and all iOS developers or users are familiar with this component. This component is one of the essential components that every iOS developer should know how to master and use.

Getting ready

In this recipe, we will see how to build an iOS app which uses a navigation controller. We will see how to push and pop between the view controllers of the navigation controller. We will discuss the navigation bar, which you can see at the top of the navigation controller, and how to customize it.

There is some information that you should know about UINavigationController:

  • The view controllers that it manages are put in a stack; when you push a view controller, you put it at the top...

Working with stack views


UIStackView is one of the coolest features introduced in iOS 9.0 for developers. It was a hassle to arrange groups of views horizontally or vertically. You had to get your hands dirty with a lot of Auto Layout constraints to arrange these views properly. UIStackView makes arranging subviews horizontally or vertically easier without you worrying about Auto Layout. Although you don't need to use Auto Layout to arrange your views, as its UIStackview's job, you still need to use Auto Layout to define position and size of the stack view itself. If you're still not convinced about the magic that UIStackView does, you have to give it a shot.

How to do it

  1. As usual, let's create a new Xcode project with Single View template and name it StackViews.

  2. Open the storyboard file and select the view controller and change its size to iPhone 4-inch.

  3. From Object Library, drag a Vertical stack view and add it as a subview.

  4. Change its frame to (X = 20, Y = 20, Width = 280).

  5. We need to add constraints...

Working with UICollectionView


UICollectionView is a very handy and awesome view when it comes to dealing with grid layout. Collection view helps you create a grid layout (2D cells) easily without hassle. Collection view is just a scrollable view that lays out multiple cells in a grid layout. So, to create a collection view, you have to specify a data source and delegate exactly like UITableView. Besides that, you need to specify how the layout of your cells will appear. iOS provides you with an abstract class-UICollectionViewLayout-which should be subclassed to customize how the content will be managed. You can create your own custom layouts and describe how you want to lay out your cells. However, thanks to Apple, it provides us with a premade layout called UICollectionViewFlowLayout, which flow the layout by placing the cells one after the other based on their sizes and the spacing between them.

How to do it...

  1. Create a new Xcode project with our lovely template Single View template and...

Working with gestures like swipe, pan, rotation, and tap


When users use your app, clicking is not only the possible way that user can interact with the app. iOS provides you with gesture recognizers such as the most commonly used gestures by users, such as swipe or tap gestures. Although it is very nice to support gestures in you app, misusing them may lead to a very bad user experience and cause conflicts to your users. Another problem is that most users don't know that you have to swipe in a specific area to get an action done, so it's recommended that you show a tutorial or notes on screen, telling users about what gestures you support so that they become aware of them.

Getting ready

In this recipe, we will show you a simple UIView that can interact with multiple gesture recognizers; but before getting started, let's explain briefly the difference between the various gesture recognizers:

  • UITapGestureRecognizer: This is a gesture recognizer that detects taps on UIViews with any number of...

Using 3D touch


Since the launch of iPhone 6s and 6s plus, Apple has introduced a new way of user interaction with mobile apps. A new dimension of touch event has been added by introducing 3D touch. By detecting how hard or deeply the user presses on the screen, you can do a specific action in your app. In the example below, we will see how to get the force of touch and log display on screen.

How to do it...

  1. As usual, open Xcode and create a new project with Single View template named 3D Touch.

  2. Open storyboard, and add a UILabel and place it at the center of the screen.

  3. Link the label with an IBOutlet to ViewController.swift.

  4. Go to ViewController.swift and override the following method:

   override func touchesMoved(touches: Set<UITouch>, withEvent event: UIEvent?) { 
       if let touch = touches.first { 
           if #available(iOS 9.0, *) { 
               if traitCollection.forceTouchCapability ==.Available { 
                   // 3D Touch is avaialble in this device...

Working with UICollectionView

UICollectionView is a very handy and awesome view when it comes to dealing with grid layout. Collection view helps you create a grid layout (2D cells) easily without hassle. Collection view is just a scrollable view that lays out multiple cells in a grid layout. So, to create a collection view, you have to specify a data source and delegate exactly like UITableView. Besides that, you need to specify how the layout of your cells will appear. iOS provides you with an abstract class-UICollectionViewLayout-which should be subclassed to customize how the content will be managed. You can create your own custom layouts and describe how you want to lay out your cells. However, thanks to Apple, it provides us with a premade layout called UICollectionViewFlowLayout, which flow the layout by placing the cells one after the other based on their sizes and the...

Working with gestures like swipe, pan, rotation, and tap

When users use your app, clicking is not only the possible way that user can interact with the app. iOS provides you with gesture recognizers such as the most commonly used gestures by users, such as swipe or tap gestures. Although it is very nice to support gestures in you app, misusing them may lead to a very bad user experience and cause conflicts to your users. Another problem is that most users don't know that you have to swipe in a specific area to get an action done, so it's recommended that you show a tutorial or notes on screen, telling users about what gestures you support so that they become aware of them.

Getting ready

In this recipe, we will show...

Using 3D touch

Since the launch of iPhone 6s and 6s plus, Apple has introduced a new way of user interaction with mobile apps. A new dimension of touch event has been added by introducing 3D touch. By detecting how hard or deeply the user presses on the screen, you can do a specific action in your app. In the example below, we will see how to get the force of touch and log display on screen.

How to do it...

  1. As usual, open Xcode and create a new project with Single View template named 3D Touch.
  2. Open storyboard, and add a UILabel and place it at the center of the screen.
  3. Link the label with an IBOutlet to ViewController.swift.
  4. Go to ViewController.swift and override the following method:
   override func touchesMoved(touches...
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Key benefits

  • Create high performance iOS apps with a focus on application development APIs and techniques
  • Enrich your UI skills with UIStoryboard, Autolayout, Size classes, and Container view
  • Produce enhanced results with iOS 10 as a result of learning and implementing pro-level practices, techniques, and solutions

Description

Do you want to understand all the facets of iOS programming and build complex iOS apps? Then you have come to the right place. This problem-solution guide will help you to eliminate expensive learning curves and focus on specific issues to make you proficient at tasks and the speed-up time involved. Beginning with some advanced UI components such as Stack Views and UICollectionView, you will gradually move on to building an interface efficiently. You will work through adding gesture recognizer and touch elements on table cells for custom actions. You will work with the Photos framework to access and manipulate photos. You will then prepare your app for multitasking and write responsive and highly efficient apps. Next, you will integrate maps and core location services while making your app more secure through various encryption methods. Finally, you will dive deep into the advanced techniques of implementing notifications while working with memory management and optimizing the performance of your apps. By the end of the book, you will master most of the latest iOS 10 frameworks.

Who is this book for?

If you are an iOS developer on a quest to develop your perfect iOS app, then this book is for you. It would also prove to be a valuable resource for those who want to get up and running with iOS development through a clear, practical approach. In order to unleash the full potential of this book, basic Swift programming knowledge is necessary.

What you will learn

  • Build your own custom UIViews through code or the interface builder
  • Implement a dynamic and interactive interface in an iOS app
  • Work on various graphics related elements and the process of using them together to make meaningful shapes.
  • Use the side over and split view to interact with multiple apps concurrently
  • Encrypt JSON calls to make the app more secure
  • Work on web markup feature to enhance search optimization

Product Details

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Publication date, Length, Edition, Language, ISBN-13
Publication date : Mar 31, 2017
Length: 520 pages
Edition : 1st
Language : English
ISBN-13 : 9781786467706
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Product Details

Publication date : Mar 31, 2017
Length: 520 pages
Edition : 1st
Language : English
ISBN-13 : 9781786467706
Vendor :
Apple
Category :
Languages :
Tools :

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Table of Contents

15 Chapters
Swift Programming Language Chevron down icon Chevron up icon
The Essentials Chevron down icon Chevron up icon
Integrating with Messages App Chevron down icon Chevron up icon
Working with Interface Builder Chevron down icon Chevron up icon
Working with UITableView Chevron down icon Chevron up icon
Animations and Graphics Chevron down icon Chevron up icon
Multimedia Chevron down icon Chevron up icon
Concurrency Chevron down icon Chevron up icon
Location Services Chevron down icon Chevron up icon
Security and Encryption Chevron down icon Chevron up icon
Networking Chevron down icon Chevron up icon
Persisting Data with Core Data Chevron down icon Chevron up icon
Notifications Chevron down icon Chevron up icon
App Search Chevron down icon Chevron up icon
Optimizing Performance Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Full star icon Half star icon Empty star icon 3.5
(2 Ratings)
5 star 50%
4 star 0%
3 star 0%
2 star 50%
1 star 0%
ahmed May 20, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Outstanding! Highly, highly, highly recommend this book. Thorough, and easy to follow.
Amazon Verified review Amazon
Dimitri Shvorob Jun 18, 2017
Full star icon Full star icon Empty star icon Empty star icon Empty star icon 2
Oh boy - "programing", one "m". Packt are nasty, but having a typo in the book's very title, that's a new low. The rest is standard Packt: a broken-English, typo-ridden narrative that dispenses with any introduction, cannot manage explanation of concepts, and is only comfortable - sort of - when running through screenshots. I can immediately tell that the book is useless for an iOS beginner such as myself, and that I need to go back to "iOS Programming: The Big Nerd Ranch Guide" by Keur and Hillegass. At the same time, I notice that many of the topics in "iOS Programing" do show up in Keur-Hillegass, making it less likely that I would want to make "iOS Programing" my second book. For now, I am sending it back to Amazon.PS. I would be rich if I had a dollar for every fake five-star review of a Packt-published book on Amazon. Check out this "ahmed", for example: two five-star reviews of Packt books, and another five-star review of a non-Packt book ("Digital Transformation Strategy") with the text copied from another review of the same book, by "badr. m".
Amazon Verified review Amazon
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