12주차 : doit Swift 분석

2장

 

//
//  ViewController.swift
//  HelloWorld
//
//  Created by Ho-Jeong Song on 2021/11/09.
//

import UIKit

class ViewController: UIViewController {
    @IBOutlet var lblHello: UILabel!
    @IBOutlet var txtName: UITextField!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
    }

    @IBAction func btnSend(_ sender: UIButton) {
        lblHello.text = "Hello, " + txtName.text!
    }
    
}

 

연결 관계

 

3강 본문 실습

//
//  ViewController.swift
//  ImageView
//
//  Created by Ho-Jeong Song on 2021/11/23.
//

import UIKit

class ViewController: UIViewController {
    var isZoom = false
    var imgOn: UIImage?
    var imgOff: UIImage?

    @IBOutlet var imgView: UIImageView!
    @IBOutlet var btnResize: UIButton!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.

        imgOn = UIImage(named: "lamp_on.png")
        imgOff = UIImage(named: "lamp_off.png")
        
        imgView.image = imgOn
    }

    @IBAction func btnResizeImage(_ sender: UIButton) {
        let scale: CGFloat = 2.0
        var newWidth: CGFloat, newHeight: CGFloat

        if (isZoom) {   // true
            newWidth = imgView.frame.width / scale
            newHeight = imgView.frame.height / scale
            
            btnResize.setTitle("확대", for: .normal)
        }
        else {  // false
            newWidth = imgView.frame.width * scale
            newHeight = imgView.frame.height * scale
            
            btnResize.setTitle("축소", for: .normal)
        }
        
        imgView.frame.size = CGSize(width: newWidth, height: newHeight)
        
        isZoom = !isZoom
    }
    
    @IBAction func switchImageOnOff(_ sender: UISwitch) {
        if sender.isOn {
            imgView.image = imgOn
        } else {
            imgView.image = imgOff
        }
    }
}

 

연결관계

 

 

4장 본문 실습 (데이트 타임 픽커)

//
//  ViewController.swift
//  DatePicker
//
//  Created by Ho-Jeong Song on 2021/11/24.
//

import UIKit

class ViewController: UIViewController {
    let timeSelector: Selector = #selector(ViewController.updateTime)
    let interval = 1.0
    var count = 0

    @IBOutlet var lblCurrentTime: UILabel!
    @IBOutlet var lblPickerTime: UILabel!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.

        Timer.scheduledTimer(timeInterval: interval, target: self, selector: timeSelector, userInfo: nil, repeats: true)
    }

    @IBAction func changeDatePicker(_ sender: UIDatePicker) {
        let datePickerView = sender
        
        let formatter = DateFormatter()
        formatter.dateFormat = "yyyy-MM-dd HH:mm EEE"
        lblPickerTime.text = "선택시간: " + formatter.string(from: datePickerView.date)
    }

    @objc func updateTime() {
        //        lblCurrentTime.text = String(count)
        //        count = count + 1

        let date = NSDate()

        let formatter = DateFormatter()
        formatter.dateFormat = "yyyy-MM-dd HH:mm:ss EEE"
        lblCurrentTime.text = "현재시간: " + formatter.string(from: date as Date)
    }
}

연결 관계 

 

5강 본문 실습 픽커뷰

//
//  ViewController.swift
//  PickerView
//
//  Created by Ho-Jeong Song on 2021/11/25.
//

import UIKit

class ViewController: UIViewController, UIPickerViewDelegate, UIPickerViewDataSource {
    let MAX_ARRAY_NUM = 10
    let PICKER_VIEW_COLUMN = 1
    let PICKER_VIEW_HEIGHT:CGFloat = 80
    var imageArray = [UIImage?]()
    var imageFileName = [ "1.jpg", "2.jpg", "3.jpg", "4.jpg", "5.jpg",
                          "6.jpg", "7.jpg", "8.jpg", "9.jpg", "10.jpg" ]

    @IBOutlet var pickerImage: UIPickerView!
    @IBOutlet var lblImageFileName: UILabel!
    @IBOutlet var imageView: UIImageView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.

        for i in 0 ..< MAX_ARRAY_NUM {
            let image = UIImage(named: imageFileName[i])
            imageArray.append(image)
        }
        
        lblImageFileName.text = imageFileName[0]
        imageView.image = imageArray[0]
    }

    // returns the number of 'columns' to display.
    func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return PICKER_VIEW_COLUMN
    }
    
    // returns height of row for each component.
    func pickerView(_ pickerView: UIPickerView, rowHeightForComponent component: Int) -> CGFloat {
        return PICKER_VIEW_HEIGHT
    }

    // returns the # of rows in each component..
    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        return imageFileName.count
    }
    
//    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
//        return imageFileName[row]
//    }

    func pickerView(_ pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusing view: UIView?) -> UIView {
        let imageView = UIImageView(image:imageArray[row])
        imageView.frame = CGRect(x: 0, y: 0, width: 100, height: 150)
        
        return imageView
    }

    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
        lblImageFileName.text = imageFileName[row]
        imageView.image = imageArray[row]
    }
}

연결 관계

 

6강 경고창

 

 

//
//  ViewController.swift
//  Alert
//
//  Created by BeomGeun Lee on
//

import UIKit

class ViewController: UIViewController {
    
    let imgOn = UIImage(named: "lamp-on.png")
    let imgOff = UIImage(named: "lamp-off.png")
    let imgRemove = UIImage(named: "lamp-remove.png")
    
    var isLampOn = true
    
    @IBOutlet var lampImg: UIImageView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        lampImg.image = imgOn
    }

    @IBAction func btnLampOn(_ sender: UIButton) {
        if(isLampOn==true) {
            let lampOnAlert = UIAlertController(title: "경고", message: "현재 On 상태입니다", preferredStyle: UIAlertController.Style.alert)
            let onAction = UIAlertAction(title: "네, 알겠습니다.", style: UIAlertAction.Style.default, handler: nil)
            lampOnAlert.addAction(onAction)
            present(lampOnAlert, animated: true, completion: nil)
        } else {
            lampImg.image = imgOn
            isLampOn=true
        }
    }
    
    @IBAction func btnLanpOff(_ sender: UIButton) {
        if isLampOn {
            let lampOffAlert = UIAlertController(title: "램프 끄기", message: "램프를 끄시겠습니까?", preferredStyle: UIAlertController.Style.alert)

            let offAction = UIAlertAction(title: "네", style: UIAlertAction.Style.default, handler: {
                ACTION in self.lampImg.image = self.imgOff
                self.isLampOn=false
            })
            let cancelAction = UIAlertAction(title: "아니오", style: UIAlertAction.Style.default, handler: nil)

            lampOffAlert.addAction(offAction)
            lampOffAlert.addAction(cancelAction)

            present(lampOffAlert, animated: true, completion: nil)
        }
    }
    
    @IBAction func btnLampRemove(_ sender: UIButton) {
        let lampRemoveAlert = UIAlertController(title: "램프 제거", message: "램프를 제거하시겠습니까?", preferredStyle: UIAlertController.Style.alert)

        let offAction = UIAlertAction(title: "아니오, 끕니다(off).", style: UIAlertAction.Style.default, handler: {
            ACTION in self.lampImg.image = self.imgOff
            self.isLampOn=false
        })
        let onAction = UIAlertAction(title: "아니오, 켭니다(on).", style: UIAlertAction.Style.default) {
            ACTION in self.lampImg.image = self.imgOn
            self.isLampOn=true
        }
        let removeAction = UIAlertAction(title: "네, 제거합니다.", style: UIAlertAction.Style.destructive, handler: {
            ACTION in self.lampImg.image = self.imgRemove
            self.isLampOn=false
        })

        lampRemoveAlert.addAction(offAction)
        lampRemoveAlert.addAction(onAction)
        lampRemoveAlert.addAction(removeAction)

        present(lampRemoveAlert, animated: true, completion: nil)
    }
    
}

연결 관계

 

7강 본문실습 내장형 웹브라우저 삽입

//
//  ViewController.swift
//  Web
//
//  Created by BeomGeun Lee on
//

import UIKit
import WebKit

class ViewController: UIViewController, WKNavigationDelegate {

    @IBOutlet var txtUrl: UITextField!
    @IBOutlet var myWebView: WKWebView!
    @IBOutlet var myActivityIndicator: UIActivityIndicatorView!
    
    func loadWebPage(_ url: String) {
        let myUrl = URL(string: url)
        let myRequest = URLRequest(url: myUrl!)
        myWebView.load(myRequest)
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        myWebView.navigationDelegate = self
        loadWebPage("http://2sam.net")
    }
    
    func webView(_ webView: WKWebView, didCommit navigation: WKNavigation!) {
        myActivityIndicator.startAnimating()
        myActivityIndicator.isHidden = false
    }
    
    func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
        myActivityIndicator.stopAnimating()
        myActivityIndicator.isHidden = true
    }
    
    func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
        myActivityIndicator.stopAnimating()
        myActivityIndicator.isHidden = true
    }
    
    func checkUrl(_ url: String) -> String {
       var strUrl = url
        let flag = strUrl.hasPrefix("http://")
        if !flag {
            strUrl = "http://" + strUrl
        }
        return strUrl
    }

    @IBAction func btnGotoUrl(_ sender: UIButton) {
        let myUrl = checkUrl(txtUrl.text!)
        txtUrl.text = ""
        loadWebPage(myUrl)
    }
    
    @IBAction func btnGoSite1(_ sender: UIButton) {
        loadWebPage("http://fallinmac.tistory.com")
    }
    
    @IBAction func btnGoSite2(_ sender: UIButton) {
        loadWebPage("http://blog.2sam.net")
    }
    
    @IBAction func btnLoadHtmlString(_ sender: UIButton) {
        let htmlString = "<h1> HTML String </h1><p> String 변수를 이용한 웹페이지 </p> <p><a href=\"http://2sam.net\">2sam</a>으로 이동</p>"
        myWebView.loadHTMLString(htmlString, baseURL: nil)
    }
    
    @IBAction func btnLoadHtmlFile(_ sender: UIButton) {
        let filePath = Bundle.main.path(forResource: "htmlView", ofType: "html")
        let myUrl = URL(fileURLWithPath: filePath!)
        let myRequest = URLRequest(url: myUrl)
        myWebView.load(myRequest)
    }
    
    @IBAction func btnStop(_ sender: UIBarButtonItem) {
        myWebView.stopLoading()
    }
    
    @IBAction func btnReload(_ sender: UIBarButtonItem) {
        myWebView.reload()
    }
    
    @IBAction func btnGoBack(_ sender: UIBarButtonItem) {
        myWebView.goBack()
    }
    
    @IBAction func btnGoForward(_ sender: UIBarButtonItem) {
        myWebView.goForward()
    }
    
}

연결 관계

8강 지도 넘어가기 

//
//  ViewController.swift
//  Map
//
//  Created by BeomGeun Lee on 2021
//

import UIKit
import MapKit

class ViewController: UIViewController, CLLocationManagerDelegate {

    @IBOutlet var myMap: MKMapView!
    @IBOutlet var lblLocationInfo1: UILabel!
    @IBOutlet var lblLocationInfo2: UILabel!
    
    let locationManager = CLLocationManager()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        lblLocationInfo1.text = ""
        lblLocationInfo2.text = ""
        locationManager.delegate = self
        locationManager.desiredAccuracy = kCLLocationAccuracyBest
        locationManager.requestWhenInUseAuthorization()
        locationManager.startUpdatingLocation()
        myMap.showsUserLocation = true
    }
    
    func goLocation(latitudeValue: CLLocationDegrees, longitudeValue : CLLocationDegrees, delta span :Double)-> CLLocationCoordinate2D {
        let pLocation = CLLocationCoordinate2DMake(latitudeValue, longitudeValue)
        let spanValue = MKCoordinateSpan(latitudeDelta: span, longitudeDelta: span)
        let pRegion = MKCoordinateRegion(center: pLocation, span: spanValue)
        myMap.setRegion(pRegion, animated: true)
        return pLocation
    }

    func setAnnotation(latitudeValue: CLLocationDegrees, longitudeValue : CLLocationDegrees, delta span :Double, title strTitle: String, subtitle strSubtitle:String) {
        let annotation = MKPointAnnotation()
        annotation.coordinate =  goLocation(latitudeValue: latitudeValue, longitudeValue: longitudeValue, delta: span)
        annotation.title = strTitle
        annotation.subtitle = strSubtitle
        myMap.addAnnotation(annotation)
    }
    
    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        let pLocation = locations.last
        _ = goLocation(latitudeValue: (pLocation?.coordinate.latitude)!, longitudeValue: (pLocation?.coordinate.longitude)!, delta: 0.01)
        CLGeocoder().reverseGeocodeLocation(pLocation!, completionHandler: {
            (placemarks, error) -> Void in
            let pm = placemarks!.first
            let country = pm!.country
            var address:String = country!
            if pm!.locality != nil {
                address += " "
                address += pm!.locality!
            }
            if pm!.thoroughfare != nil {
                address += " "
                address += pm!.thoroughfare!
            }
            
            self.lblLocationInfo1.text = "현재 위치"
            self.lblLocationInfo2.text = address
            })
        
        locationManager.stopUpdatingLocation()
    }

    @IBAction func sgChangeLocation(_ sender: UISegmentedControl) {
        if sender.selectedSegmentIndex == 0 {
            self.lblLocationInfo1.text = ""
            self.lblLocationInfo2.text = ""
            locationManager.startUpdatingLocation()
        } else if sender.selectedSegmentIndex == 1 {
            setAnnotation(latitudeValue: 37.751853, longitudeValue: 128.87605740000004, delta: 1, title: "한국폴리텍대학 강릉캠퍼스", subtitle: "강원도 강릉시 남산초교길 121")
            self.lblLocationInfo1.text = "보고 계신 위치"
            self.lblLocationInfo2.text = "한국폴리텍대학 강릉캠퍼스"
        } else if sender.selectedSegmentIndex == 2 {
            setAnnotation(latitudeValue: 37.556876, longitudeValue: 126.914066, delta: 0.1, title: "이지스퍼블리싱", subtitle: "서울시 마포구 잔다리로 109 이지스 빌딩")
            self.lblLocationInfo1.text = "보고 계신 위치"
            self.lblLocationInfo2.text = "이지스퍼블리싱 출판사 "
        }
        
    }
    
}

연결 관계 

지도 이용시 이렇게 테스트 가능 , 시뮬레이터에서 art 누르면 확대 축소 가능 

9강

//
//  ViewController.swift
//  PageControl
//
//  Created by Ho-Jeong Song on 2021/11/25.
//

import UIKit

var images = [ "01.png", "02.png", "03.png", "04.png", "05.png", "06.png" ]

class ViewController: UIViewController {
    @IBOutlet var imgView: UIImageView!
    @IBOutlet var pageControl: UIPageControl!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.

        pageControl.numberOfPages = images.count
        pageControl.currentPage = 0
        
        pageControl.pageIndicatorTintColor = UIColor.green
        pageControl.currentPageIndicatorTintColor = UIColor.red
        
        imgView.image = UIImage(named: images[0])
    }

    @IBAction func pageChange(_ sender: UIPageControl) {
        imgView.image = UIImage(named: images[pageControl.currentPage])
    }
    
}

연결관계

 

 

10강

//
//  ViewController.swift
//  Tab
//
//  Created by BeomGeun Lee on 2021.
//

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
    }

    @IBAction func btnMoveImageView(_ sender: UIButton) {
        tabBarController?.selectedIndex = 1
    }
    
    @IBAction func btnMoveDatePickerView(_ sender: UIButton) {
        tabBarController?.selectedIndex = 2
    }
}

 

 

11강

//
//  ViewController.swift
//  Navigation
//
//  Created by BeomGeun Lee on 2021.
//

import UIKit

class ViewController: UIViewController, EditDelegate {

    let imgOn = UIImage(named: "lamp_on.png")
    let imgOff = UIImage(named: "lamp_off.png")
    
    var isOn = true
    
    @IBOutlet var txMessage: UITextField!
    @IBOutlet var imgView: UIImageView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        imgView.image = imgOn
    }

    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        let editViewController = segue.destination as! EditViewController
        if segue.identifier == "editButton" {
            editViewController.textWayValue = "segue : use button"
        } else if segue.identifier == "editBarButton" {
            editViewController.textWayValue = "segue : use Bar button"
        }
        editViewController.textMessage = txMessage.text!
        editViewController.isOn = isOn
        editViewController.delegate = self
    }
    
    func didMessageEditDone(_ controller: EditViewController, message: String) {
        txMessage.text = message
    }
    
    func didImageOnOffDone(_ controller: EditViewController, isOn: Bool) {
        if isOn {
            imgView.image = imgOn
            self.isOn = true
        } else {
            imgView.image = imgOff
            self.isOn = false
        }
    }
    
}

 

12강

(투두 리스트)테이블

13강(오디오 출력)

//
//  ViewController.swift
//  Audio
//
//  Created by BeomGeun Lee on 2021.
//

import UIKit
import AVFoundation

class ViewController: UIViewController, AVAudioPlayerDelegate, AVAudioRecorderDelegate {
    
    var audioPlayer : AVAudioPlayer!
    var audioFile : URL!
    
    let MAX_VOLUME : Float = 10.0
    
    var progressTimer : Timer!
    
    let timePlayerSelector:Selector = #selector(ViewController.updatePlayTime)
    let timeRecordSelector:Selector = #selector(ViewController.updateRecordTime)

    @IBOutlet var pvProgressPlay: UIProgressView!
    @IBOutlet var lblCurrentTime: UILabel!
    @IBOutlet var lblEndTime: UILabel!
    @IBOutlet var btnPlay: UIButton!
    @IBOutlet var btnPause: UIButton!
    @IBOutlet var btnStop: UIButton!
    @IBOutlet var slVolume: UISlider!
    
    @IBOutlet var btnRecord: UIButton!
    @IBOutlet var lblRecordTime: UILabel!
    
    var audioRecorder : AVAudioRecorder!
    var isRecordMode = false
    
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        selectAudioFile()
        if !isRecordMode {
            initPlay()
            btnRecord.isEnabled = false
            lblRecordTime.isEnabled = false
        } else {
            initRecord()
        }
    }
    
    func selectAudioFile() {
        if !isRecordMode {
            audioFile = Bundle.main.url(forResource: "Sicilian_Breeze", withExtension: "mp3")
        } else {
            let documentDirectory = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0]
            audioFile = documentDirectory.appendingPathComponent("recordFile.m4a")
        }
    }
    
    func initRecord() {
        let recordSettings = [
        AVFormatIDKey : NSNumber(value: kAudioFormatAppleLossless as UInt32),
        AVEncoderAudioQualityKey : AVAudioQuality.max.rawValue,
        AVEncoderBitRateKey : 320000,
        AVNumberOfChannelsKey : 2,
        AVSampleRateKey : 44100.0] as [String : Any]
        do {
            audioRecorder = try AVAudioRecorder(url: audioFile, settings: recordSettings)
        } catch let error as NSError {
            print("Error-initRecord : \(error)")
        }
        audioRecorder.delegate = self
        slVolume.value = 1.0
        audioPlayer.volume = slVolume.value
        lblEndTime.text = convertNSTimeInterval2String(0)
        lblCurrentTime.text = convertNSTimeInterval2String(0)
        setPlayButtons(false, pause: false, stop: false)
        let session = AVAudioSession.sharedInstance()
        do {
            try AVAudioSession.sharedInstance().setCategory(.playAndRecord, mode: .default)
            try AVAudioSession.sharedInstance().setActive(true)
        } catch let error as NSError {
            print(" Error-setCategory : \(error)")
        }
        do {
            try session.setActive(true)
        } catch let error as NSError {
            print(" Error-setActive : \(error)")
        }
    }
    
    func initPlay() {
        do {
            audioPlayer = try AVAudioPlayer(contentsOf: audioFile)
        } catch let error as NSError {
            print("Error-initPlay : \(error)")
        }
        slVolume.maximumValue = MAX_VOLUME
        slVolume.value = 1.0
        pvProgressPlay.progress = 0
        
        audioPlayer.delegate = self
        audioPlayer.prepareToPlay()
        audioPlayer.volume = slVolume.value
        
        lblEndTime.text = convertNSTimeInterval2String(audioPlayer.duration)
        lblCurrentTime.text = convertNSTimeInterval2String(0)
        setPlayButtons(true, pause: false, stop: false)
    }
    
    func setPlayButtons(_ play:Bool, pause:Bool, stop:Bool) {
        btnPlay.isEnabled = play
        btnPause.isEnabled = pause
        btnStop.isEnabled = stop
    }
    
    func convertNSTimeInterval2String(_ time:TimeInterval) -> String {
        let min = Int(time/60)
        let sec = Int(time.truncatingRemainder(dividingBy: 60))
        let strTime = String(format: "%02d:%02d", min, sec)
        return strTime
    }

    @IBAction func btnPlayAudio(_ sender: UIButton) {
        audioPlayer.play()
        setPlayButtons(false, pause: true, stop: true)
        progressTimer = Timer.scheduledTimer(timeInterval: 0.1, target: self, selector: timePlayerSelector, userInfo: nil, repeats: true)
    }
    
    @objc func updatePlayTime() {
        lblCurrentTime.text = convertNSTimeInterval2String(audioPlayer.currentTime)
        pvProgressPlay.progress = Float(audioPlayer.currentTime/audioPlayer.duration)
    }
    
    @IBAction func btnPauseAudio(_ sender: UIButton) {
        audioPlayer.pause()
        setPlayButtons(true, pause: false, stop: true)
    }
    
    @IBAction func btnStopAudio(_ sender: UIButton) {
        audioPlayer.stop()
        audioPlayer.currentTime = 0
        lblCurrentTime.text = convertNSTimeInterval2String(0)
        setPlayButtons(true, pause: false, stop: false)
        progressTimer.invalidate()
    }
    
    @IBAction func slChangeVolume(_ sender: UISlider) {
        audioPlayer.volume = slVolume.value
    }
    
    func audioPlayerDidFinishPlaying(_ player: AVAudioPlayer, successfully flag: Bool) {
        progressTimer.invalidate()
        setPlayButtons(true, pause: false, stop: false)
    }
    
    @IBAction func swRecordMode(_ sender: UISwitch) {
        if sender.isOn {
            audioPlayer.stop()
            audioPlayer.currentTime=0
            lblRecordTime!.text = convertNSTimeInterval2String(0)
            isRecordMode = true
            btnRecord.isEnabled = true
            lblRecordTime.isEnabled = true
        } else {
            isRecordMode = false
            btnRecord.isEnabled = false
            lblRecordTime.isEnabled = false
            lblRecordTime.text = convertNSTimeInterval2String(0)
        }
        selectAudioFile()
        if !isRecordMode {
            initPlay()
        } else {
            initRecord()
        }
    }
    
    @IBAction func btnRecord(_ sender: UIButton) {
        if (sender as AnyObject).titleLabel?.text == "Record" {
            audioRecorder.record()
            (sender as AnyObject).setTitle("Stop", for: UIControl.State())
            progressTimer = Timer.scheduledTimer(timeInterval: 0.1, target: self, selector: timeRecordSelector, userInfo: nil, repeats: true)
        } else {
            audioRecorder.stop()
            progressTimer.invalidate()
            (sender as AnyObject).setTitle("Record", for: UIControl.State())
            btnPlay.isEnabled = true
            initPlay()
        }
    }
    
    @objc func updateRecordTime() {
        lblRecordTime.text = convertNSTimeInterval2String(audioRecorder.currentTime)
    }
    
}

 

 

14강

//
//  ViewController.swift
//  MoviePlayer
//
//  Created by Ho-Jeong Song on 2021/11/26.
//

import UIKit
import AVKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
    }

    @IBAction func btnPlayInternalMovie(_ sender: UIButton) {
        // 내부 파일 mp4
        let filePath:String? = Bundle.main.path(forResource: "FastTyping", ofType: "mp4")
        let url = NSURL(fileURLWithPath: filePath!)

        playVideo(url: url)
    }
    
    @IBAction func btnPlayerExternalMovie(_ sender: UIButton) {
        // 외부 파일 mp4
        let url = NSURL(string: "https://dl.dropboxusercontent.com/s/e38auz050w2mvud/Fireworks.mp4")!

        playVideo(url: url)
    }
    
    private func playVideo(url: NSURL)  {
        let playerController = AVPlayerViewController()
        
        let player = AVPlayer(url: url as URL)
        playerController.player = player
        
        self.present(playerController, animated: true) {
            player.play()
        }
    }
}

 

 

15강

//
//  ViewController.swift
//  CameraPhotoLibrary
//
//  Created by Ho-Jeong Song on 2021/11/27.
//

import UIKit
import MobileCoreServices

class ViewController: UIViewController, UINavigationControllerDelegate, UIImagePickerControllerDelegate {
    @IBOutlet var imgView: UIImageView!
    
    let imagePicker: UIImagePickerController! = UIImagePickerController()
    var captureImage: UIImage!
    var videoURL: URL!
    var flagImageSave = false

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
    }

    @IBAction func btnCaptureImageFromCamera(_ sender: UIButton) {
        if (UIImagePickerController.isSourceTypeAvailable(.camera)) {
            flagImageSave = true
            
            imagePicker.delegate = self
            imagePicker.sourceType = .camera
            imagePicker.mediaTypes = ["public.image"]
            imagePicker.allowsEditing = false
            
            present(imagePicker, animated: true, completion: nil)
        }
        else {
            myAlert("Camera inaccessable", message: "Application cannot access the camera.")
        }
    }
    
    @IBAction func btnLoadImageFromLibrary(_ sender: UIButton) {
        if (UIImagePickerController.isSourceTypeAvailable(.photoLibrary)) {
            flagImageSave = false
            
            imagePicker.delegate = self
            imagePicker.sourceType = .photoLibrary
            imagePicker.mediaTypes = ["public.image"]
            imagePicker.allowsEditing = true
            
            present(imagePicker, animated: true, completion: nil)
        }
        else {
            myAlert("Photo album inaccessable", message: "Application cannot access the photo album.")
        }
    }
    
    @IBAction func btnRecordVideoFromCamera(_ sender: UIButton) {
        if (UIImagePickerController.isSourceTypeAvailable(.camera)) {
            flagImageSave = true
            
            imagePicker.delegate = self
            imagePicker.sourceType = .camera
            imagePicker.mediaTypes = ["public.movie"]
            imagePicker.allowsEditing = false
            
            present(imagePicker, animated: true, completion: nil)
        }
        else {
            myAlert("Camera inaccessable", message: "Application cannot access the camera.")
        }
    }
    
    @IBAction func btnLoadVideoFromLibrary(_ sender: UIButton) {
        if (UIImagePickerController.isSourceTypeAvailable(.photoLibrary)) {
            flagImageSave = false
            
            imagePicker.delegate = self
            imagePicker.sourceType = .photoLibrary
            imagePicker.mediaTypes = ["public.movie"]
            imagePicker.allowsEditing = false
            
            present(imagePicker, animated: true, completion: nil)
        }
        else {
            myAlert("Photo album inaccessable", message: "Application cannot access the photo album.")
        }
    }
    
    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
        let mediaType = info[UIImagePickerController.InfoKey.mediaType] as! NSString

        if mediaType.isEqual(to: "public.image" as String) {
            captureImage = info[UIImagePickerController.InfoKey.originalImage] as? UIImage

            if flagImageSave {
                UIImageWriteToSavedPhotosAlbum(captureImage, self, nil, nil)
            }

            imgView.image = captureImage
        }
        else if mediaType.isEqual(to: "public.movie" as String) {
            if flagImageSave {
                videoURL = (info[UIImagePickerController.InfoKey.mediaURL] as! URL)

                UISaveVideoAtPathToSavedPhotosAlbum(videoURL.relativePath, self, nil, nil)
            }
        }

        self.dismiss(animated: true, completion: nil)
    }
    
    func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
        self.dismiss(animated: true, completion: nil)
    }

    func myAlert(_ title: String, message: String) {
        let alert = UIAlertController(title: title, message: message, preferredStyle: UIAlertController.Style.alert)
        let action = UIAlertAction(title: "Ok", style: UIAlertAction.Style.default, handler: nil)
        alert.addAction(action)
        self.present(alert, animated: true, completion: nil)
    }
}

 

 

16강

//
//  ViewController.swift
//  DrawGraphics
//
//  Created by Ho-Jeong Song on 2021/12/01.
//

import UIKit

class ViewController: UIViewController {
    @IBOutlet var imgView: UIImageView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
    }

    @IBAction func btnDrawLine(_ sender: UIButton) {
        UIGraphicsBeginImageContext(imgView.frame.size)
        let context = UIGraphicsGetCurrentContext()!
        
        // Draw Line
        context.setLineWidth(2.0)
        context.setStrokeColor(UIColor.red.cgColor)
        
        context.move(to: CGPoint(x: 70, y: 50))
        context.addLine(to: CGPoint(x: 270, y: 250))
        
        context.strokePath()
        
        // Draw Triangle
        context.setLineWidth(4.0)
        context.setStrokeColor(UIColor.blue.cgColor)
        
        context.move(to: CGPoint(x: 170, y: 200))
        context.addLine(to: CGPoint(x: 270, y: 350))
        context.addLine(to: CGPoint(x:  70, y: 350))
        context.addLine(to: CGPoint(x: 170, y: 200))
        context.strokePath()
        
        imgView.image = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
    }
    
    @IBAction func btnDrawRectangle(_ sender: UIButton) {
        UIGraphicsBeginImageContext(imgView.frame.size)
        let context = UIGraphicsGetCurrentContext()!
        
        // Draw Rectangle
        context.setLineWidth(2.0)
        context.setStrokeColor(UIColor.red.cgColor)
        
        context.addRect(CGRect(x: 70, y: 100, width: 200, height: 200))
        context.strokePath()
        
        imgView.image = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
    }
    
    @IBAction func btnDrawCircle(_ sender: UIButton) {
        UIGraphicsBeginImageContext(imgView.frame.size)
        let context = UIGraphicsGetCurrentContext()!
        
        // Draw Ellipse
        context.setLineWidth(2.0)
        context.setStrokeColor(UIColor.red.cgColor)
        
        context.addEllipse(in: CGRect(x: 70, y: 50, width: 200, height: 100))
        context.strokePath()
        
        // Draw Circle
        context.setLineWidth(5.0)
        context.setStrokeColor(UIColor.green.cgColor)
        
        context.addEllipse(in: CGRect(x: 70, y: 200, width: 200, height: 200))
        context.strokePath()
        
        imgView.image = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
    }
    
    @IBAction func btnDrawArc(_ sender: UIButton) {
        UIGraphicsBeginImageContext(imgView.frame.size)
        let context = UIGraphicsGetCurrentContext()!
        
        // Draw Arc
        context.setLineWidth(5.0)
        context.setStrokeColor(UIColor.red.cgColor)
        
        context.move(to: CGPoint(x: 100, y: 50))
        context.addArc(tangent1End: CGPoint(x: 250, y:50), tangent2End: CGPoint(x:250, y:200), radius: CGFloat(50))
        context.addLine(to: CGPoint(x: 250, y: 200))
        
        context.move(to: CGPoint(x: 100, y: 250))
        context.addArc(tangent1End: CGPoint(x: 270, y:250), tangent2End: CGPoint(x:100, y:400), radius: CGFloat(20))
        context.addLine(to: CGPoint(x: 100, y: 400))
        
        context.strokePath()
        
        imgView.image = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
    }
    
    @IBAction func btnDrawFill(_ sender: UIButton) {
        UIGraphicsBeginImageContext(imgView.frame.size)
        let context = UIGraphicsGetCurrentContext()!
        
        // Draw Rectangle
        context.setLineWidth(1.0)
        context.setStrokeColor(UIColor.red.cgColor)
        context.setFillColor(UIColor.red.cgColor)
        
        let rectangel = CGRect(x: 70, y: 50, width: 200, height: 100)
        context.addRect(rectangel)
        context.fill(rectangel)
        context.strokePath()
        
        // Draw Circle
        context.setLineWidth(1.0)
        context.setStrokeColor(UIColor.blue.cgColor)
        context.setFillColor(UIColor.blue.cgColor)
        
        let circle = CGRect(x: 70, y: 200, width: 200, height: 100)
        context.addEllipse(in: circle)
        context.fillEllipse(in: circle)
        context.strokePath()
        
        // Draw Triangle
        context.setLineWidth(1.0)
        context.setStrokeColor(UIColor.green.cgColor)
        context.setFillColor(UIColor.green.cgColor)
        
        context.move(to: CGPoint(x: 170, y: 350))
        context.addLine(to: CGPoint(x: 270, y: 450))
        context.addLine(to: CGPoint(x:  70, y: 450))
        context.addLine(to: CGPoint(x: 170, y: 350))
        context.fillPath()
        context.strokePath()
        
        imgView.image = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
    }
}

17강

//
//  ViewController.swift
//  TapTouch
//
//  Created by Ho-Jeong Song on 2021/12/01.
//

import UIKit

class ViewController: UIViewController {
    @IBOutlet var txtMessage: UILabel!
    @IBOutlet var txtTapCount: UILabel!
    @IBOutlet var txtTouchCount: UILabel!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
    }

    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        let touch = touches.first! as UITouch
        
        txtMessage.text = "Touches Began"
        txtTapCount.text = String(touch.tapCount)
        txtTouchCount.text = String(touches.count)
    }

    override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
        let touch = touches.first! as UITouch
        
        txtMessage.text = "Touches Moved"
        txtTapCount.text = String(touch.tapCount)
        txtTouchCount.text = String(touches.count)
    }
    
    override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
        let touch = touches.first! as UITouch
        
        txtMessage.text = "Touches Ended"
        txtTapCount.text = String(touch.tapCount)
        txtTouchCount.text = String(touches.count)
    }
}

 

18강

 

 

//
//  ViewController.swift
//  SwipeGesture
//
//  Created by Ho-Jeong Song on 2021/12/02.
//

import UIKit

class ViewController: UIViewController {
    @IBOutlet var imgViewUp: UIImageView!
    @IBOutlet var imgViewDown: UIImageView!
    @IBOutlet var imgViewLeft: UIImageView!
    @IBOutlet var imgViewRight: UIImageView!
    
    var imgLeft = [UIImage]()
    var imgRight = [UIImage]()
    var imgUp = [UIImage]()
    var imgDown = [UIImage]()

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.

        imgUp.append(UIImage(named: "arrow-up-black.png")!)
        imgUp.append(UIImage(named: "arrow-up-red.png")!)
        imgDown.append(UIImage(named: "arrow-down-black.png")!)
        imgDown.append(UIImage(named: "arrow-down-red.png")!)
        imgLeft.append(UIImage(named: "arrow-left-black.png")!)
        imgLeft.append(UIImage(named: "arrow-left-red.png")!)
        imgRight.append(UIImage(named: "arrow-right-black.png")!)
        imgRight.append(UIImage(named: "arrow-right-red.png")!)

        imgViewUp.image = imgUp[0]
        imgViewDown.image = imgDown[0]
        imgViewLeft.image = imgLeft[0]
        imgViewRight.image = imgRight[0]

        let swipeUp = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.respondToSwipeGesture(_:)))
        swipeUp.direction = UISwipeGestureRecognizer.Direction.up
        self.view.addGestureRecognizer(swipeUp)
        
        let swipeDown = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.respondToSwipeGesture(_:)))
        swipeDown.direction = UISwipeGestureRecognizer.Direction.down
        self.view.addGestureRecognizer(swipeDown)
        
        let swipeLeft = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.respondToSwipeGesture(_:)))
        swipeLeft.direction = UISwipeGestureRecognizer.Direction.left
        self.view.addGestureRecognizer(swipeLeft)
        
        let swipeRight = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.respondToSwipeGesture(_:)))
        swipeRight.direction = UISwipeGestureRecognizer.Direction.right
        self.view.addGestureRecognizer(swipeRight)
    }

    @objc func respondToSwipeGesture(_ gesture: UIGestureRecognizer) {
        if let swipeGesture = gesture as? UISwipeGestureRecognizer {
            imgViewUp.image = imgUp[0]
            imgViewDown.image = imgDown[0]
            imgViewLeft.image = imgLeft[0]
            imgViewRight.image = imgRight[0]
            
            switch swipeGesture.direction {
            case UISwipeGestureRecognizer.Direction.up:
                imgViewUp.image = imgUp[1]
            case UISwipeGestureRecognizer.Direction.down:
                imgViewDown.image = imgDown[1]
            case UISwipeGestureRecognizer.Direction.left:
                imgViewLeft.image = imgLeft[1]
            case UISwipeGestureRecognizer.Direction.right:
                imgViewRight.image = imgRight[1]
            default:
                break
            }
        }
    }

}

 

19강

//
//  ViewController.swift
//  PinchGesture
//
//  Created by Ho-Jeong Song on 2021/12/02.
//

import UIKit

class ViewController: UIViewController {
    @IBOutlet var txtPinch: UILabel!
    
    var initialFontSize:CGFloat!

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.

        let pinch = UIPinchGestureRecognizer(target: self, action: #selector(ViewController.doPinch(_:)))
        self.view.addGestureRecognizer(pinch)
    }

    @objc func doPinch(_ pinch: UIPinchGestureRecognizer) {
        if (pinch.state == UIGestureRecognizer.State.began) {
            initialFontSize = txtPinch.font.pointSize
        } else {
            txtPinch.font = txtPinch.font.withSize(initialFontSize * pinch.scale)
        }
    }

}

 

---

BMI 실습 소스 

 

let weight = 60.0
let height = 170.0
let bmi = weight / (height*height*0.0001) // kg/m*m
print(bmi)

 

---

 

import Foundation
let weight = 60.0
let height = 170.0
let bmi = weight / (height*height*0.0001) // kg/m*m
let shortenedBmi = String(format: "%.2f", bmi) // 더블형을 문자열로 바꿔 저장 
print(bmi, shortenedBmi)

//20.761245674740483 20.8

---

import Foundation
class BMI {
var weight : Double
var height : Double
init(weight:Double, height:Double){
self.height = height
self.weight = weight
}
func calcBMI() -> String {
let bmi=weight/(height*height*0.0001)// kg/m*m
let shortenedBmi = String(format: "%.1f", bmi)
var body = ""


    if bmi >= 40{
    body = "3단계 비만"
    } else if bmi >= 30 && bmi < 40 {
    body = "2단계 비만"
    } else if bmi >= 25 && bmi < 30 {
    body = "1단계 비만"
    } else if bmi >= 18.5 && bmi < 25 {
    body = "정상"
    } else {
    body = "저체중"
    }
    return "BMI:\(shortenedBmi), 판정:\(body)"
    }
    }
    var han = BMI(weight:62.5, height:172.3)
    print(han.calcBMI())

// BMI를 도출하는 클레스 생성자를 이용하요 값을 넣고 클레스 메소드를 이용하여 판정 결과 추출
//BMI:21.1, 판정:정상

 

 

---