var ref = Database.database().reference().child("Essages")
var childRef = Database.database().reference().child("Essages").childByAutoId()
@IBAction func sendBtn(_ sender: Any) {
posting()
}
func posting(){
let values = ["message" : captionTextView.text] as [String : Any] childRef.updateChildValues(values) { (error, ref) in
if error != nil {
print("error")
}else {
let = Timer.scheduledTimer(timeInterval: 90000, target: self, selector: #selector(self.onTick), userInfo: nil, repeats: false) }
}
}func onTick(){
childRef.removeValue()
}
when i closed the app its not executing this function pleaase help me in sorting this problem....