This two methods should be included into the file, so it would make keyboard disappear on Enter button push, or tap outside the keyboard

hideiOSKeyboard.swift

override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
        self.view.endEditing(true)
    }
    
    func textFieldShouldReturn(input: UITextField) -> Bool {
        input.resignFirstResponder()
        return true
    }