问NetworkManager为APSupported

EN

public void add(User user) {
ConnectionRequest con = new ConnectionRequest();

String url="http://localhost/NY/untitled/web/app_dev.php/user/new"
+ "?Fonctionuser="+user.getUserFunction()
+"&Fullname="+user.getUserName()
+"&Imageproduit="+user.getUserImage()
+"&Latitude="+user.getLatitude()
+"&Longitude="+user.getLongitude()
+"&State="+user.getUserState();
System.out.println(user.getUserState());

con.setUrl(url);
NetworkManager.getInstance().addToQueue(con); 
}

Exception in thread "main" java.lang.NullPointerException
at com.codename1.io.NetworkManager.isAPSupported(NetworkManager.java:866)
at com.codename1.io.ConnectionRequest.<init>(ConnectionRequest.java:330)
at Services.UserServices.add(UserServices.java:18)
at Services.Main.main(Main.java:30)

public static void main(String[] args) { 
  User user = new User(); 
  user.setLatitude(111); 
  user.setLongitude(111); 
  user.setUserFunction( UserFunction.Client.ordinal()); 
  user.setUserImage("uezfniez"); 
  user.setUserState((int)UserState.Hold.ordinal()); 
  user.setUserName("jamel"); 
  UserServices userServices = new UserServices(); 
  userServices.add(user); 
}