iOS App 개발 - Sizuha/devdog GitHub Wiki

class SocketConnection {
  private var connection: NWConnection!
  
  ///
  /// サーバーとの接続を確立する
  ///
  func connect(ip ipaddr: String, port: UInt32 = 11000) {
    print("connecting to \(ipaddr):\(port)")
    
    let svrHost = NWEndpoint.Host(ipaddr)
    let svrPort = NWEndpoint.Port(integerLiteral: UInt16(port))
    connection = NWConnection(host: svrHost, port: svrPort, using: .tcp)
    connection.stateUpdateHandler = { state in
      switch state {
      case .setup:
        break
        
      case .ready:
        printAppLog("Socket is Ready")
        self.receiveData(from: self.connection)
        
      case .waiting(let error):
        printAppLog("\(error.localizedDescription)")
        self.raiseTimeoutEvent()
        
      case .failed(let error):
        printAppLog("\(error.localizedDescription)")
        
      case .cancelled:
        printAppLog("cancelled")
        
      case .preparing:
        print("socket opened")
        
      @unknown default: break
      }
    }
    
    let queue = DispatchQueue(label: "socket")
    connection.start(queue: queue)
  }

  // ...
}

private var containerUrl: URL? {
　　　　let url = FileManager.default.url(forUbiquityContainerIdentifier: nil)?.appendingPathComponent("디렉토리 이름")
  do {
　　　　　　　　try FileManager.default.createDirectory(at: url!, withIntermediateDirectories: true, attributes: nil)
 　　} catch let error as NSError {
　　　　　　　　//エラー処理
  }
    return url
}

  func syncBackupData() -> Bool {
    let url = containerUrl?.appendingPathComponent("backup.csv")
    do {
      try FileManager.default.startDownloadingUbiquitousItem(at: url!)
      return true
    }
    catch {
      return false
    }
  }

import AVFoundation

// Load
do {
  self.audioPlayer = try AVAudioPlayer(contentsOf: AUDIO_URL)
  self.audioPlayer.delegate = self
  self.audioPlayer.prepareToPlay()
} catch { }

// Play
self.audioPlayer.play()
self.audioPlayer.pause()
self.audioPlayer.stop()

// 전체 길이
let len: TimeInterval = self.audioPlayer.duration
// 재생 위치 변경
self.audioPlayer.currentTime = timeIntervalValue

extension SomeViewController: AVAudioPlayerDelegate {
  // 재생 완료시 처리
  func audioPlayerDidFinishPlaying(_ player: AVAudioPlayer, successfully flag: Bool) {}
}

import AVFoundation
import AVKit

let avItem = AVPlayerItem(url: VIDEO_URL)
let avPlayer = AVPlayer(playerItem: avItem)

let playerController = AVPlayerViewController()
playerController.player = avPlayer
present(playerController, animated: true) { avPlayer.play() }

let avItem = AVPlayerItem(url: VIDEO_URL)
self.videoPlayer = AVPlayer(playerItem: avItem)

self.playerLayer = AVPlayerLayer(player: self.videoPlayer)
self.playerLayer.frame = CGRect(
  x: 0, y: 0,
  width: 100,
  height: 100
)
self.view.layer.addSublayer(self.playerLayer)

guard let player = self.videoPlayer else { return }

// 재생
player.play()

// 정지(stop은 없다)
player.pause()

// 이벤트
NotificationCenter.default.addObserver(self, selector: #selector(playerDidFinishPlaying), name: .AVPlayerItemDidPlayToEndTime, object: nil)
@objc func playerDidFinishPlaying(note: NSNotification) { } // 재생 완료시

// 재생 위치 이동
func setPlayPosition(time: TimeInterval) {
  // TimeInterval을 CMTime으로 변환
  let cmTime = CMTime(seconds: time, preferredTimescale: 1_000_000)
  self.videoPlayer.seek(to: cmTime)
}

guard UIImagePickerController.isSourceTypeAvailable(.camera) else { return }

let recController = UIImagePickerController()

recController.sourceType = .camera
recController.mediaTypes = [kUTTypeMovie as String]
recController.delegate = self

recController.allowsEditing = false
recController.showsCameraControls = false
recController.cameraOverlayView = createCameraOverlayView()


/// 카메라 화면에 오버레이시킬 뷰를 작성
private func createCameraOverlayView() -> UIView {
  let view = UIView(frame: self.view.frame)
  view.backgroundColor = UIColor(hexString: "#000", alpha: 0.0)
  
  let captureStopButton = UIButton()
  captureStopButton.layer.masksToBounds = true
  captureStopButton.backgroundColor = UIColor(hexString: "#ff0000", alpha: 0.7)
  captureStopButton.setTitle("終了", for: .normal)
  captureStopButton.frame = CGRect(x: 0, y: self.view.frame.height - 80, width: self.view.frame.width, height: 80)
  captureStopButton.addTarget(self, action: #selector(stopVideoCapture), for: .touchUpInside)
  view.addSubview(captureStopButton)
  captureStopButton.isHidden = true
  
  let toggleLightButton = UIButton()
  toggleLightButton.layer.masksToBounds = true
  toggleLightButton.makeRoundCornor()
  toggleLightButton.backgroundColor = UIColor(hexString: "#000", alpha: 0.7)
  toggleLightButton.setTitle("Light On/Off", for: .normal)
  toggleLightButton.frame = CGRect(x: 10, y: 10, width: 150, height: 50)
  toggleLightButton.addTarget(self, action: #selector(toggleCameraLight), for: .touchUpInside)
  view.addSubview(toggleLightButton)
  
  Timer.scheduledTimer(withTimeInterval: 3.5, repeats: false) { timer in
    captureStopButton.isHidden = false
    timer.invalidate()
  }

  return view
}

/// 촬영 종료
@objc func stopVideoCapture() {
  recController.stopVideoCapture()
}

/// 카메라 플래시 on/off
@objc func toggleCameraLight() {
  guard
    let avDevice = AVCaptureDevice.default(for: AVMediaType.video),
    avDevice.hasTorch
  else { return }
  
  if let _ = try? avDevice.lockForConfiguration() {
    avDevice.torchMode = AVCaptureDevice.TorchMode.off == avDevice.torchMode
      ? AVCaptureDevice.TorchMode.on
      : AVCaptureDevice.TorchMode.off
    avDevice.unlockForConfiguration()
  }
}

// 이벤트
extension SomeViewController: UIImagePickerControllerDelegate {
  func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
    // 촬영 취소시
  }
  
  func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
    if let selectedVideo: URL = (info[UIImagePickerController.InfoKey.mediaURL] as? URL) {
      // 촬영 완료시
    }
    picker.dismiss(animated: true)
  }
}

let url = URL(string: "myphotoapp:Vacation?index=1")

if UIApplication.shared.canOpenURL(url) {
    UIApplication.shared.open(url!) { (result) in
        if result {
           // The URL was delivered successfully!
        }
    }    
}       

func application(_ application: UIApplication,
                 open url: URL,
                 options: [UIApplicationOpenURLOptionsKey : Any] = [:] ) -> Bool {
    
    // Determine who sent the URL.
    let sendingAppID = options[.sourceApplication]
    print("source application = \(sendingAppID ?? "Unknown")")
    
    // Process the URL.
    guard let components = NSURLComponents(url: url, resolvingAgainstBaseURL: true),
        let albumPath = components.path,
        let params = components.queryItems else {
            print("Invalid URL or album path missing")
            return false
    }
    
    if let photoIndex = params.first(where: { $0.name == "index" })?.value {
        print("albumPath = \(albumPath)")
        print("photoIndex = \(photoIndex)")
        return true
    } else {
        print("Photo index missing")
        return false
    }
}

// URL과 함께 앱이 기동하는 경우
func scene(_ scene: UIScene, 
           willConnectTo session: UISceneSession, 
           options connectionOptions: UIScene.ConnectionOptions) {

    // Determine who sent the URL.
    if let urlContext = connectionOptions.urlContexts.first {

        let sendingAppID = urlContext.options.sourceApplication
        let url = urlContext.url
        print("source application = \(sendingAppID ?? "Unknown")")
        print("url = \(url)")
            
        // Process the URL similarly to the UIApplicationDelegate example.
    }
}

// 이미 앱이 기동 중인 경우
func scene(_ scene: UIScene, openURLContexts URLContexts: Set<UIOpenURLContext>) {
    if let urlContext = URLContexts.first {
        let url = urlContext.url

        if let rootVC = UIApplication.shared.windows.first?.rootViewController as? UINavigationController,
           rootVC.viewControllers.isEmpty == false
        {
            // TODO
        }
    }
}

// 1.
let systemVersion = UIDevice.current.systemVersion

// 2.
if #available(iOS 9.0, *) {
    // use the feature only available in iOS 9
    // for ex. UIStackView
} else {
    // or use some work around
}