Intro to Development for ios. Dave Koziol Arbormoon Software, Inc.

Transcription

1 Intro to Development for ios Dave Koziol Arbormoon Software, Inc.

2 About Me Long time Apple Developer (21 WWDCs) Organizer Ann Arbor CocoaHeads President & ios Developer at Arbormoon Software Inc. Multiple Top 5 apps in the itunes App Store

3 Audience Background Prior coding experience? Current Students? IT Industry? Others?

4 Languages Requirements Background Process Resources Q&A Overview

5 Languages ios Development Language Historically: Objective-C 2014: Apple introduced Swift Transition to Swift is ongoing

6 Languages: Swift Intended to be: modern object oriented safer support functional programming Currently version 4.1 Still evolving

7 Languages: Swift Playgrounds (ipad) Animated interactive tool for learning Swift Free for ipad in the App Store

8 Requirements Mac that supports current macos (10.13+) Apple ios Developer Account Free, $99 per year, or $299 per year Supported ios Device (ios 10 or ios 11) Xcode 9.2 (5.3GB Download) Free in Mac App Store

9 Requirements: Supported Devices iphone 5s, 6, 6 Plus, 6S, 6S Plus, SE, 7, 7 Plus, 8, 8 Plus, and X ipod Touch (6th Generation) ipad Air, Air 2, and 5th Generation ipad mini 2, 3 and 4 All ipad Pros

10 Background: Xcode Text Editing

11 Background: Xcode Storyboards

12 Background: Xcode Integrated Debugger

13 Background: Xcode Playgrounds Interactive tool to play with Swift, and see the results.

14 Background: Simulator Simulates all current devices

15 Background: ios Heavily based on mac OS Applications are sandboxed True multitasking OS, but ability to use multitasking is limited.

16 Background: ios Stack Your App CocoaTouch Media Core Services Core OS

17 Background: ios Stack Core OS Your App CocoaTouch Media Core Services Core OS BSD/POSIX Sockets File System Bonjour Keychain Threads Security

18 Background: ios Stack Core Services Your App CocoaTouch Media Core Services Core OS SQLite Core Location Address Book Collections Core Location Preferences Core Motion

19 Background: ios Stack Media Your App CocoaTouch Media Core Services Core OS Core Graphics Core Text OpenGL ES AV Foundation Core Audio Video Playback Core Animation

20 Background: ios Stack CocoaTouch Your App CocoaTouch Media Core Services Core OS UIKit MapKit GameKit Messages UI AddressBook UI

21 Process: Typical Develop App in Xcode Developer tests on device(s) with developer builds Testers test on devices with TestFlight or Ad Hoc builds Distribute via App Store

22 Process: Views & Controllers GUI widgets are UIViews UIViewControllers drive the UIViews One controller for each page of your App. Might have UINavigationControllers or UITabBarControllers to switch views. Views can be defined in code or in storyboards.

23 UINavigationBar UITableView UITableViewCell

24 Process: More Views UIButton, UILabel, UITextField, UISlider, UISwitch, UISegmentedController, UIPickerView, UIActivityIndicatorView, UIImageView, UIPageControl, UIWebView, MKMapView, UISearchBar, UICollectionView, etc.

25 Process: App Life Cycle Starts in main(int argc, char * argv) Typically calls UIApplicationMain(argc, argv, nil, nil) Info.plist defines storyboard & more for App App Delegate typically implements application(didfinishlaunchingwithoptions) View Controllers often override viewdidload() or viewwillappear()

26 Process: Debugging NSLog - Output to console, like printf Warning this can be expensive in release builds Visual Debugger Test on a real device

27 Process: Device Testing Xcode can load debug builds onto a device Need a paid or University developer account for testing by others. Apps are signed Use TestFlight, Apple Configurator, HockeyKit or App Store to deploy to devices.

28 Process: Getting Started Start with the best Template. Check Use Core Data for database support. Take the time to figure out Storyboards and AutoLayout.

29 Process: Deployment Target 81% of users are on ios 11 and above according to Apple.

30 Resources: Learning Developing ios 11 Apps with Swift by Stanford ios 10 SDK Development by Chris Adamson ios Programming: The Big Nerd Ranch Guide (6th Edition) by Keur & Hillegass

31 Resources: Other Tools CocoaPods - Library reuse tool AppCode - Replacement for Xcode from JetBrains Visual Studio for Mac - Unity, Xamarin

32 Resources: Cross- Platform Google s Flutter - Dart Microsoft s Xamarin - C# ReactNative - JavaScript Titanium SDK - JavaScript

33 Resources: Followup Sessions Intro to Coding for Android 6/19 8pm, Grand Circus Designing for Mobile 6/20 2pm, 20 Witherell App Development - Native Vs. Cross-Platform 6/20 6pm, Grand Circus Surviving and Thriving in Tech (When You re Not a Techie) 6/21 1pm, Aloft Detroit

34 Resources: Local Community Motor City CocoaHeads 3rd Thursday of every month, food 6:30, Talk 7pm CocoaHeads Ann Arbor 2nd Thursday of every month, Pizza 6:30pm, Talk 7pm Web: Mobile Monday Groups in Ann Arbor and Detroit Web:

35 Resources: Community Stack Overflow Web: ios Developers HQ Web:

36 Q&A