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스탠포드 iOS 강의노트 L1,2,3
Lecture 1 ~ 3
Lecture 1: Intro to iOS 10, Xcode 8, Swift 3
Lecture 2: MVC; iOS, Xcode and Swift Demonstration
Lecture 3: More Swift and the Foundation Framework
Course Description Updated for iOS 10 and Swift. Tools and APIs required to build applications for the iPhone and iPad platforms using the iOS SDK. User interface design for mobile devices and unique user interactions using multi-touch technologies. Object-oriented design using model-view-controller paradigm, memory management, Swift programming language. Other topics include: object-oriented database API, animation, mobile device power management, multi-threading, networking and performance considerations.
- This course material is only available in the iTunes U app on iPhone or iPad.
- Developing iOS 10 Apps with Swift by Stanford
Mandatory Articles
Class: UIViewController
- UIViewController controls UI
- Outlet = Instances and Variables (Properties)
@IBOutlet weak var display: UILabel? = nil- Action = Method
@IBAction func touchDigit(_ sender: UIButton) {}
Arguments and Parameters
- External Name: Arguments when we call a function
- Internal Name: Parameters when we define a function
DIY. Make calculator
- Optional: Set / Not set
- nil: optional, not set
01. User Typing Digits
var isUserTyping: Bool = false
@IBAction func touchDigit(_ sender: UIButton) {
let digit = sender.currentTitle!
if isUserTyping {
let textCurrentlyInDisplay = display!.text!
display!.text = textCurrentlyInDisplay + digit
}else {
display!.text = digit
isUserTyping = true
}
}02. Computed Properties
- read only variables
- get some values from~ and set some values to~
- Double to String
// Computed properties
var displayValue: Double {
get {
return Double(display!.text!)!
}
set {
display?.text = String(newValue)
}
}03. Define Operating Action
@IBAction func operation(_ sender: UIButton) {
isUserTyping = false
if let mathSymbol = sender.currentTitle {
switch mathSymbol {
case "√" :
displayValue = sqrt(displayValue)
default :
break
}
}
}04. Divide Operation to Model
- 계산 기능을 Model(API)로 만들기
- 03번의 계산 기능을 UI에서 분리하는 작업
import Foundation
// This is the Model of Calculator Brain.
// UI Independent, Read - only.
struct CalculatorBrain {
private var accumulator: Double
func performOperation(_ symbol: String) {
}
func setOperand(_ operand: Double) {
}
// Computed properties
var result: Double {
get {
}
}
}05. Operation Action과 Model 연결
private var brain: CalculatorBrain = CalculatorBrain()
@IBAction func performOperation(_ sender: UIButton) {
if isUserTyping {
brain.setOperand(displayValue)
isUserTyping = false
}
if let mathSymbol = sender.currentTitle {
brain.performOperation(mathSymbol)
}
if let result = brain.result {
displayValue = result
}
}