How to show notification after close app on swift3? - swift3

Question

I want to show notification when app close on swift 3. is it possible,
how to do it? could you advise me?
//get Data
func getData(){
let url=URL(string:"http://MyGPS/service.php")
do {
let allContactsData = try Data(contentsOf: url!)
let allContacts = try JSONSerialization.jsonObject(with: allContactsData, options: JSONSerialization.ReadingOptions.allowFragments) as! [String : NSArray]
if let arrJSON = allContacts["mygps"] {
for index in 0...arrJSON.count-1 {
vibration.append(aObject["vibration"] as! String)
}
}
}
catch {
}
}
//show notification
func notification(){
let content = UNMutableNotificationContent()
content.title = "GPS alert message"
// content.subtitle = "Do you know?"
content.body = "Your GPS detect vibration!!"
content.badge = 1
content.sound = UNNotificationSound.default()
let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 5, repeats: false)
let request = UNNotificationRequest(identifier: "timerDone", content: content, trigger: trigger)
UNUserNotificationCenter.current().add(request, withCompletionHandler: nil)
}
// call function
func someBackgroundTask(timer:Timer) {
DispatchQueue.global(qos: DispatchQoS.background.qosClass).async {
//print("do some background task")
self.getData()
DispatchQueue.main.async {
//self.updatMarker()
}
}
}
// Use Timer
Timer.scheduledTimer(withTimeInterval: 5.0, repeats: true) {
timer in
self.someBackgroundTask(timer: timer)
}