JeremyXue77

public enum HTTPMethod: String {
    case get    = "GET"
    case post   = "POST"
    case put    = "PUT"
    case patch  = "PATCH"
    case delete = "DELETE"
}

JeremyXue77

protocol EndPointType {
    var baseURL: URL { get }
    var path: String { get }
    var httpMethod: HTTPMethod { get }
    var task: HTTPTask { get }
    var headers: HTTPHeaders? { get }
}

JeremyXue77

func showMessageAlert(message: String) {
    // 加入震動
    AudioServicesPlayAlertSound(kSystemSoundID_Vibrate)
    let alert = UIAlertController(title: "Gesture Password", message: message, preferredStyle: .alert)
    let okAction = UIAlertAction(title: "OK", style: .default) { [weak self](_) in
        // 按下 OK 時，清空所有 lineLayers 中的 layer                                                  
        self?.lineLayers.forEach { (layer) in
            layer.removeFromSuperlayer()
        }
        self?.lineLayers.removeAll()

JeremyXue77

extension ViewController: GestureCollectionViewDelegate {
    
    // 讓手指碰觸點與前一個點產生連線(與畫線大同小異，只是只會在畫面上加入一次)
    func move(point: CGPoint) {
        // 如果前一個點存在
        if let currentPoint = currentPoint {
            // 判斷目前與手指的連線是否存在
            // 若無則新增一個 CAShapeLayer
            if moveLayer == nil {
                moveLayer = CAShapeLayer()

JeremyXue77

protocol GestureCollectionViewDelegate: class {
    func move(point: CGPoint)
    func selectedItem(indexPath: IndexPath)
    func cancel()
}

class GestureCollectionView: UICollectionView {
    
    weak var gestureDelegate: GestureCollectionViewDelegate?
    

JeremyXue77

private func drawLine(to point: CGPoint) {
    // 判斷當前是否有前一個座標
    if let currentPoint = currentPoint {
        // 新增 CAShapeLayer
        let shapeLayer = CAShapeLayer()
        shapeLayer.frame = gestureCollectionView.bounds
        shapeLayer.position = gestureCollectionView.center
        shapeLayer.fillColor = nil
        shapeLayer.lineWidth = 3
        shapeLayer.strokeColor = UIColor.green.cgColor

JeremyXue77

enum GesturePasswordType: Int {
    case setting = 0
    case unlock = 1
}

@IBAction func changeType(_ sender: UISegmentedControl) {
    guard let type = GesturePasswordType(rawValue: sender.selectedSegmentIndex) else { return }
    gesturePasswordType = type
}

JeremyXue77

@IBAction func changeRows(_ sender: UIStepper) {
    let alert = UIAlertController(title: "", message: "Your password will be cleared. Do you want to continue?", preferredStyle: .alert)
    let continueAction = UIAlertAction(title: "Continue", style: .default) { [weak self](_) in
        self?.row = Int(sender.value)
        self?.password = []
        self?.gestureCollectionView.reloadSections(IndexSet(integer: 0))
    }
    let cancelAction = UIAlertAction(title: "Cancel", style: .cancel, handler: nil)
    alert.addAction(continueAction)
    alert.addAction(cancelAction)

JeremyXue77

extension ViewController: UICollectionViewDelegateFlowLayout {
    
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
        let width = collectionView.bounds.width / CGFloat(row * 2 - 1)
        return CGSize(width: width, height: width)
    }
    
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAt section: Int) -> CGFloat {
        let width = collectionView.bounds.width / CGFloat(row * 2 - 1)
        return width

JeremyXue77

@IBAction func logging(_ sender: UIButton) {
    // 創建 LAContext 實例
    let context = LAContext()
    // 設置取消按鈕標題
    context.localizedCancelTitle = "Cancel"
    // 宣告一個變數接收 canEvaluatePolicy 返回的錯誤
    var error: NSError?
    // 評估是否可以針對給定方案進行身份驗證
    if context.canEvaluatePolicy(.deviceOwnerAuthentication, error: &error) {
        // 描述使用身份辨識的原因