Question

如何将数据从AppDelegate类传递到自定义ViewController？

import UIKit
import LocalAuthentication

class ViewController: UIViewController {
    public var config: PasscodeConfig!

    func GetAppDelegate(){
        print("\(self.config)") /// nil %(
    }

    override public func viewDidLoad() {
        super.viewDidLoad()

        self.GetAppDelegate()
}
...
}

不幸的是，变量 config 返回-无 AppDelegate：

   @UIApplicationMain
    class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?
    var appCoordinator: AppCoordinator!

    var code = ""
lazy var passcode: Passcode = {
    let config = PasscodeConfig(passcodeGetter: {
        return self.code
        // Return code as string
    }, passcodeSetter: { code in
        self.code = code
         // Save new code
    }, biometricsGetter: {
        return true
        // return Should use biometrics (Touch ID or Face ID) as Bool
    })

    let passcode = Passcode(window: self.window, config: config)

    return passcode
}()

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {

        window = UIWindow(frame: UIScreen.main.bounds)
        appCoordinator = AppCoordinator(window: window!)
        appCoordinator.start()

        self.passcode.authenticateWindow()

        return true
    }
...
}

密码类

导入UIKit 导入LocalAuthentication

协议PassDelegate：类{ func jumpToHomePage（） func jumpToOnboardingPage（） }

公共类密码{

public var config: PasscodeConfig!
public var isPresented = false
private var appDelegateWindow: UIWindow?

private var authenticationViewController: PasscodeViewController?
private lazy var passcodeWindow: UIWindow = {
    let window = UIWindow(frame: UIScreen.main.bounds)

    window.windowLevel = UIWindow.Level(rawValue: 0)
    window.makeKeyAndVisible()

    return window
}()

public init(window: UIWindow?, config: PasscodeConfig) {
    self.appDelegateWindow = window
    self.config = config

    NotificationCenter.default.addObserver(self, selector: #selector(self.willEnterForeground), name: UIApplication.willEnterForegroundNotification, object: nil)
    NotificationCenter.default.addObserver(self, selector: #selector(self.didEnterBackground), name: UIApplication.didEnterBackgroundNotification, object: nil)

    let context = LAContext()
    var error: NSError?

    if context.canEvaluatePolicy(.deviceOwnerAuthentication, error: &error) {
        switch context.biometryType {
        case .faceID:
            self.config.biometricsString = "Face ID"
            self.config.reason = localized("biometricsReasonFaceID")
        case .touchID:
            self.config.biometricsString = "Touch ID"
            self.config.reason = localized("biometricsReasonTouchID")
        default:
            break
        }
    } else {
        self.config.biometricsString = nil
    }
}

@objc func willEnterForeground() {
    self.config.foreground = true
    DispatchQueue.main.async {
        self.authenticationViewController?.biometrics()
    }
}

@objc func didEnterBackground() {
    self.config.foreground = false
}

// MARK: - Public

public func authenticateWindow(completion: ((Bool) -> Void)? = nil) {
    guard !isPresented, let viewController = self.load(type: .authenticate, completion: completion) else { return }

    viewController.dismissCompletion = { [weak self] in self?.dismiss() }

    passcodeWindow.windowLevel = .init(2)
    passcodeWindow.rootViewController = viewController

    self.isPresented = true
}

public func authenticate(completion: ((Bool) -> Void)? = nil) -> UIViewController? {
    return self.load(type: .authenticate, completion: completion)
}

public func authenticate(on viewController: UIViewController, animated: Bool, completion: ((Bool) -> Void)? = nil) {
    guard let target = self.authenticate(completion: completion) else { return }
    viewController.present(target, animated: animated)
}

public func askCode(completion: ((Bool) -> Void)? = nil) -> UIViewController? {
    return self.load(type: .askCode, completion: completion)
}

public func askCode(on viewController: UIViewController, animated: Bool, completion: ((Bool) -> Void)? = nil) {
    guard let target = self.askCode(completion: completion) else { return }
    viewController.present(target, animated: animated)
}

public func changeCode(completion: ((Bool) -> Void)? = nil) -> UIViewController? {
    return self.load(type: .changeCode, completion: completion)
}

public func changeCode(on viewController: UIViewController, animated: Bool, completion: ((Bool) -> Void)? = nil) {
    guard let target = self.changeCode(completion: completion) else { return }
    viewController.present(target, animated: animated) /// Отображение viewController

}


// MARK: - Private

private func load(type: PasscodeType, completion: ((Bool) -> Void)?) -> PasscodeViewController? {
    let bundle = Bundle(for: PasscodeViewController.self)
    let storyboard = UIStoryboard(name: "Login", bundle: bundle)
    guard let viewController = storyboard.instantiateViewController(withIdentifier: "PasscodeViewController") as?
        PasscodeViewController else {
        return nil
    }

    viewController.authenticatedCompletion = completion
    viewController.type = type
    viewController.config = config

    self.authenticationViewController = viewController

    return viewController
}

private func dismiss(animated: Bool = true) {
    DispatchQueue.main.async {
        self.isPresented = false
        self.appDelegateWindow?.windowLevel = UIWindow.Level(rawValue: 1)
        self.appDelegateWindow?.makeKeyAndVisible()

        UIView.animate(
            withDuration: 0.5,
            delay: 0,
            usingSpringWithDamping: 1,
            initialSpringVelocity: 0,
            options: [.curveEaseInOut],
            animations: { [weak self] in
                self?.passcodeWindow.alpha = 0
            },
            completion: { [weak self] _ in
                self?.passcodeWindow.windowLevel = UIWindow.Level(rawValue: 0)
                self?.passcodeWindow.rootViewController = nil
                self?.passcodeWindow.alpha = 1
            }
        )
    }
}

}

PasscodeConfig类

public class PasscodeConfig {

    var foreground = true
    var biometricsString: String?
    public var biometrics: String? { return biometricsString }
    public var autoBiometrics = false /// Флаг Включения Аутентификации по Биометрии

    public var reason: String?

    public var colors = PasscodeColors(dark: false, mainTint: UIColor(red: 0.0, green: 0.48, blue: 1.0, alpha: 1.0), buttonTint: .black, biometrics: (.white, UIColor(red: 0.0, green: 0.48, blue: 1.0, alpha: 1.0)), text: .black)

    public var passcodeGetter: (() -> String)
    public var passcodeSetter: ((String) -> Void)
    public var biometricsGetter: (() -> Bool)

    public init(passcodeGetter: @escaping (() -> String), passcodeSetter: @escaping ((String) -> Void), biometricsGetter: (() -> Bool)? = nil) {
        self.passcodeGetter = passcodeGetter
        self.passcodeSetter = passcodeSetter
        self.biometricsGetter = biometricsGetter ?? { true }
    }
}

public struct PasscodeColors {
    public var mainTint: UIColor
    public var buttonTint: UIColor
    public var biometrics: (UIColor, UIColor)
    public var text: UIColor
    public var dark: Bool

    public init(dark: Bool, mainTint: UIColor, buttonTint: UIColor? = nil, biometrics: (UIColor, UIColor)? = nil, text: UIColor) {
        self.mainTint = mainTint
        self.buttonTint = buttonTint ?? mainTint
        self.biometrics = biometrics ?? (text, mainTint)
        self.text = text
        self.dark = dark
    }

    public init() {
        self.mainTint = UIColor(red: 0.0, green: 0.48, blue: 1.0, alpha: 1.0) ///
        if #available(iOS 13.0, *) {
            self.buttonTint = .label
            self.biometrics = (.label, mainTint)
            self.text = .label
        } else {
            self.buttonTint = .black
            self.biometrics = (.black, mainTint)
            self.text = .black
        }
        self.dark = false
    }
}

此外，变量 config 必须在加载View之前初始化。

我需要做什么？

谢谢！

Answer 1

您可能希望将设置代码放入AppDelegate方法中，而不是作为惰性变量。

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool

您能够发布Passcode和PasscodeConfig类的样子吗？

将数据从AppDelegate传递到UIViewController

1 个答案: