JavaPos for an application. Service does not exist in loaded JCL registry

Question

I'm trying to use javapos for an android application and I'm having quite an hard time making it works.

Here's what I tried untill now.

I have the jars of javapos an the jpos.xml file, which was given to me by the vendor of the printer. I loaded the jars inside the lib folder and jpos.xml inside the root folder of the application (I'm not sure if it is where it has to be). The I wrote the java to connect to it :

System.setProperty(JposPropertiesConst.JPOS_POPULATOR_FILE_PROP_NAME, "jpos.xml");

POSPrinter printer =  new POSPrinter();

try {
            printer.open("printf");
            printer.claim(100);
            printer.setDeviceEnabled(true);

            printer.printNormal(1, "PRINT?");

 } catch (jpos.JposException e) {
            e.printStackTrace();
 }

Where "printf" is the logicName inside my xml.
But when I try to print I always get this error :

pos.JposException: Service does not exist in loaded JCL registry 

at jpos.loader.simple.SimpleServiceManager.createConnection(Unknown Source)

at jpos.loader.JposServiceLoader.findService(Unknown Source)

at jpos.BaseJposControl.open(Unknown Source)

So, my questions are:
is what I'm tring to do right? It is even possible? because I have seen a couple of question about this, but never on an android application.
If it is possible, how can I tell my application where to find JCL registry?

Answer 1

I had the same issue with a scanner interface , i solved the problem including my jpos.xml (verify that profile name you are using inside your code meets exactly the profile name inside your xml file), like this:

hope still can help !

Answer 2

You got the error because of invalid device name you specified to open.

try this:

String deviceName = "HPPrinter" // or what your device name is
printer.open(deviceName);

instead of:

printer.open("printf");