iOS perform action after period of inactivity (no user interaction)

Question

How can I add a timer to my iOS app that is based on user interaction (or lack thereof)? In other words, if there is no user interaction for 2 minutes, I want to have the ap

Answer 1

Swift 3 example here

1. create a class like .

    import Foundation
    import UIKit
   
    extension NSNotification.Name {
        public static let TimeOutUserInteraction: NSNotification.Name = NSNotification.Name(rawValue: "TimeOutUserInteraction")
      }
   
   
     class InterractionUIApplication: UIApplication {
   
     static let ApplicationDidTimoutNotification = "AppTimout"
   
     // The timeout in seconds for when to fire the idle timer.
      let timeoutInSeconds: TimeInterval = 15//15 * 60
   
         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)
      // print("3")
     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 {
       // print("1")
        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() {
         print("Time Out")
   
      NotificationCenter.default.post(name:Notification.Name.TimeOutUserInteraction, object: nil)
   
        //Go Main page after 15 second
   
       let appDelegate = UIApplication.shared.delegate as! AppDelegate
      appDelegate.window = UIWindow(frame: UIScreen.main.bounds)
       let mainStoryboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
      let yourVC = mainStoryboard.instantiateViewController(withIdentifier: "ViewController") as! ViewController
     appDelegate.window?.rootViewController = yourVC
     appDelegate.window?.makeKeyAndVisible()
   
   
      }
   }
   

2. create another class named main.swift paste bellow code

   import Foundation
      import UIKit
   
      CommandLine.unsafeArgv.withMemoryRebound(to: UnsafeMutablePointer.self, capacity: Int(CommandLine.argc))
       {    argv in
               _ = UIApplicationMain(CommandLine.argc, argv, NSStringFromClass(InterractionUIApplication.self), NSStringFromClass(AppDelegate.self))
           }
   

3. don't forget to Remove @UIApplicationMain from AppDelegate

4. Swift 3 complete source code is given to GitHub. GitHub link:https://github.com/enamul95/UserInactivity