How to bring my Swift 3.2 application to front - ios

Question

Here is an simple Swifter application in Swift 3.2 and xCode9.
Its working.
But I would write this application when this app is in background, then it bringing to front and I will see the standard white screen.
What is the best way for this idea?
import UIKit
import AudioToolbox
import WatchKit
import Foundation
import Swifter
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
let server = HttpServer()
server["/hello"] = {
var queryParamsInfo = ""
for (name, value) in $0.queryParams {
queryParamsInfo += "\(name) -> \(value)<br/>"
}
AudioServicesPlayAlertSound(kSystemSoundID_Vibrate)
return .ok(.html("<h3>You asked for \(queryParamsInfo)</h3>"))
}
do {
try server.start()
print("Server is started")
while true {
}
}
catch {
print("Error!")
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
Thanks for your help!

Answer 1

This is not possible on iOS. An application can only enter the foreground if
The user taps the app icon
The user taps a notification
The user brings the app to the foreground from the multitasking menu
The app is opened by another app (using URL Schemes)
You can not bring your app to the foreground programatically.