Question

I’ve got a problem with ClassCastException – maybe you could please suggest something ? I’m trying to get response from server via XMLRPC and get a CCE.

Here`s how I call it:

Object[] filesList = new Object[] { 
    new Object[] {"somefile.txt", lengthOfThatFile},  
    new Object[] {"somefile2.txt", lengthOfThatFile2}
};    

ArrayList<Object[]> filesResent = (ArrayList<Object[]>) client.call("someserv.checkwhattoresend", userClientID, filesList);

That last line throws an exception:

09-11 16:14:33.953: ERROR/AndroidRuntime(389): java.lang.ClassCastException: [Ljava.lang.Object;

Procedure checkwhattoresend looks like this:

public List<Object[]> checkwhattoresend(String userClientID, Object[] fileInfo) {
    ArrayList<Object[]> results = new ArrayList<Object[]>();
  // doing some stuff
    return results;
}

There should be no flaws on the server side.

UPDATE. SOLVED AS SIMPLY AS THIS:

Object[] filesResent = (Object[]) client.call("someserv.checkwhattoresend", userClientID, filesList);

Answer 1

[Ljava.lang.Object; indicates an array. Are you trying to cast an Array to a List? I’m not familiar with andriod or the client.call method you have listed, but you may want to check the return type of that call with (client.call("someserv.checkwhattoresend", userClientID, filesList)).getClass().getName()