welcome to cse 438s mobile application development iphone...

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Welcome to CSE 438SMobile Application Development

“iPhone Class”

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Course Information• Instructor

– Todd Sproull– todd@wustl.edu– Jolley 536– Office Hours by Appointment

• Classrooms– None…Online only this semester– I will host Zoom meeting during class time

• Time– Tuesdays and Thursdays. 3 – 5:30 PM

• Course Website– http://research.engineering.wustl.edu/~todd/cse438/– Also available on Canvas

• Head TA– Michael Ginn– michael.ginn@wustl.edu

• We will use Piazza to answer questions– Please sign up, I emailed everyone an invite

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Requirements• CSE 247

• Access to an Intel-based Macintosh– Running macOS 10.15 or later– iPhone SDK Xcode 11.5 and iOS 13

• We will use Xcode 11.5 the entire semester, do not upgrade to a newer version of the software

• Textbook– None, we will use lecture slides and the developer.apple.com

website

• Owning an iPhone or iPod Touch not required– We will use the simulator throughout the semester– Final projects may target an iPhone or iPod Touch

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Stanford CS193p

• This course is based on cs193p taught at Stanford by Evan Doll and Alan Cannistraro– Lectures and slides available on iTunes

• Many of the lectures and programming assignments come from this class– Initial assignments are identical– Later assignments somewhat different

• Consider taking the iTunes course if that suits your personality

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Copyrights, Patents, Fair Use…• Everything discussed in this class and on the website is

completely OPEN and FREE – Do whatever you want with it

• The goal of this class is to share as much information as possible– Open discussion of topics and ideas

• If you have a great idea and do not want others to implement it and sell it DO NOT discuss it here– If you choose to discuss it, we can probably improve it

• You are free to become an Apple Developer ($99/yr) and sell anything you create in this class– Or implement another student’s great idea and sell it

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What is this class all about?

• Building applications on iOSDevices – iPhone, iPad, iPod Touch, Apple

Watch, Apple TV• Learn new programming languages

– Swift– Objective-C

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Cocoa Touch and iPhone SDK

• Based on Cocoa– API used to develop software on Mac

• Provides rich starting point for exploring app design

• Shows real-world implementations of OO design patterns

• Designs learned on iPhone translate directly to Mac OS X

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Swift

• Apple’s latest programming language to develop OS X and iOS applications

• New language only a few years

• Combines many of the latest programming techniques in an easy to learn language

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Grading

• 4 lab assignments during the semester– 70% of your final grade

• Final Project– Work on something that can make a difference

• Start thinking about your project today!– 30% of your final grade

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Questions?

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iPhone OS Overview

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iPhone

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Mac OS X

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Mac OS X

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iPhone / iPad

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• Core OS– OS X Kernel– BSD– Sockets– Security– Power Mgmt– Keychain– File System

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• Core Services– Collections– Networking– SQLite– Net Services– Threading– Preferences

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• Media– Core Audio– Audio Mixing– Audio Recording– Video Playback– JPG, PNG, TIFF– PDF– Quartz (2D)– Core Animation– OpenGL ES

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• Cocoa Touch– Multi-Touch Events– Multi-Touch Controls– Accelerometer– Localization– Alerts– Web Views

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Development

• Tools– Xcode

• Storyboard (formerly Interface Builder)

• Frameworks– Foundations – UIKit

• Languages and Runtimes– Swift– Objective C

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Cocoa Touch Architecture

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Object Oriented Programming

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Object

Thing

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Behavior

Thing

doSomethingbehavior

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Message

Thing

doSomething

“doSomething”

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State

countflag

Thing

doSomething

state

behavior

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Other Objects as State

countflaghelper

Thing

doSomething

state

behavior

otherThing

doMore

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Outlets

sliderlabel

Controller

updateLabel

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Target/Action

sliderlabel

Controller

updateLabel

target

action - ‘updateLabel’

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Demo

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Recap

• Keep logic separate from interface elements

• Outlets connect controllers to views

• Use target/action to customize behavior

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