Detecting user inactivity in iOS application in Swift

how to detect the inactivity of the user in our app and perform actions? In our case, disconnecting the user.

Step: - 1

First Commend //@UIApplicationMain  in AppDelegate

Step:- 2

Create one  UIApplication   Swift File(NSObject File)

Coding in UIApplication  File

 Playground - noun: a place where people can play

import UIKit

extension NSNotification.Name {

       public static let TimeOutUserInteraction: NSNotification.Name = NSNotification.Name(rawValue: "MTopoUserUIApplication")

   }

class MTopoUserUIApplication: UIApplication {

    static let ApplicationDidTimoutNotification = "AppTimout"

    // The timeout in seconds for when to fire the idle timer.

       let timeoutInSeconds: TimeInterval = 10

      var idleTimer: Timer?

    // Listen for any touch. If the screen receives a touch, the timer is reset.

    override func sendEvent(_ event: UIEvent) {        

        super.sendEvent(event)

        if idleTimer != nil {

            self.resetIdleTimer()

        }

        if let touches = event.allTouches {

            for touch in touches {

                if touch.phase == UITouchPhase.began {

                    self.resetIdleTimer()

                            }

            }

        }

    }

          

    // Resent the timer because there was user interaction.   

    func resetIdleTimer() {

               if let idleTimer = idleTimer {

            idleTimer.invalidate()

        }

        idleTimer = Timer.scheduledTimer(timeInterval: timeoutInSeconds, target: self, selector: #selector(self.idleTimerExceeded), userInfo: nil, repeats: false)

    }

    

    // If the timer reaches the limit as defined in timeoutInSeconds, post this notification.

    func idleTimerExceeded() {

        NotificationCenter.default.post(name:Notification.Name.TimeOutUserInteraction, object: nil)

    }

}

Step:- 3

Create one Main.Swift File(NSObject Class)

//Coding in Swift

CommandLine.unsafeArgv.withMemoryRebound(to: UnsafeMutablePointer<Int8>.self, capacity: Int(CommandLine.argc)) {argv in

    

    _ = UIApplicationMain(CommandLine.argc, argv, NSStringFromClass(MTopoUserUIApplication.self), NSStringFromClass(AppDelegate.self))

    

}

Step :- 4

Using This Code Any ViewController in File .It can Be Working Any View Controller File

//Coding in View Controller

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {

        super.viewDidLoad()

              

        NotificationCenter.default.addObserver(self, selector: #selector(userIdle), name: Notification.Name.TimeOutUserInteraction, object: nil)   

        

        // Do any additional setup after loading the view, typically from a nib.

        

    }

    

    override func didReceiveMemoryWarning() {

        super.didReceiveMemoryWarning()

        // Dispose of any resources that can be recreated.

    }

    

       @IBAction func secVC(_ sender: Any) {

               let storyBoard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)

               let newViewController = storyBoard.instantiateViewController(withIdentifier: "SecVC") as! SecVC

               self.navigationController?.pushViewController(newViewController, animated: true)

        

    }

    

    func userIdle() {

        print("Delayed")

        let storyBoard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)

        let newViewController = storyBoard.instantiateViewController(withIdentifier: "ViewController") as! ViewController

        self.navigationController?.pushViewController(newViewController, animated: true)

    }    

}