Introduction to iOS development

An introduction to Swift and iOS development.

Transcript

1. Introduction to iOS development Funmi Adewodu @funmmi
2. iOS is Apple’s mobile operating system that runs on the iPhone, iPad and iPod touch.
3. iOS, watchOS, tvOS, macOS https://developer.apple.com
4. • A Mac • Create an Apple ID • Install Xcode • Optional enrolment in Apple's developer program to publish apps to the App store ($99/year) Getting Started ⚒
5. • Programming language for macOS, iOS, tvOS and watchOS • Includes modern language features for developers • A lot more concise and intuitive than Objective-C • Swift is easier to learn Swift
6. Open Source https://swift.org
8. Swift Features - Type safety A type safe language encourages you to be clear about the types of values your code can work with. So if a part of your code requires a String, you can’t pass it an Integer by mistake. https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_La nguage/TheBasics.html#//apple_ref/doc/uid/TP40014097-CH5-ID322
9. Integer Int Represents whole numbers 4 Double Double Represents numbers with decimal points 10.23 String String Represents text “Hello” Boolean Bool Represents true or false values true Symbol Purpose Example Common types in Swift
10. Swift Features - Variables and Constants
11. Swift Features - Type inference
12. Swift Features - Functions
13. Swift Features - Functions
14. Swift Features - Class
17. Swift Features - Protocols A protocol defines a required set of methods and properties that other types can adopt.
18. Conforming to a Protocol
19. UIKit A framework that provides the common interface elements for building iOS apps.
20. Interface Elements UINavigationBar
21. Interface Elements UILabel
22. Interface Elements UITableView
23. Interface Elements UIDatePicker UIDatePicker.countDownTimer
24. UIKit UIAlert UISearchBar UITextField UIWebView UIButton UIScrollView UISlider and many more... https://developer.apple.com/design/human-interface-guidelines/ios/overview/themes/
26. Playground
27. Playground
29. Creating an Xcode project
32. Layout and customise screens in your app App Files - Main.storyboard
34. Attributes Inspector Object library
35. Represents a screen in your app and manages other view elements within it App Files - View Controller
36. Handles the lifecycle events of an app. App Files - App Delegate
37. Building Layouts - Auto Layout Auto Layout is a way of setting constraints or UI based rules that define the position of elements on the screen. • Center a view vertically • Center a view horizontally • Position a view relative to other views
46. • Apple’s documentation (https://developer.apple.com/develop/) • App Development with Swift curriculum by Apple (Available on the iBooks store) • Raywenderlich iOS and Swift tutorials (https://www.raywenderlich.com/) • Udacity iOS courses (https://eu.udacity.com/courses/ios) • Stanford iOS course (https://itunes.apple.com/us/course/developing-ios-11-apps-with-swift/id1309275316) • Hacking with Swift (https://www.hackingwithswift.com/read) • Meetups: Codebar iOS, NSLondon, iOS London, Swift London. Resources
47. Thank you! @funmmi