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  1. #1
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    Jul 2011
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    How can I tag two Nokia C7-00 device using NFC ?

    Hi,

    Can any tell me, how can I tag two Nokia C7-00 devices by NFC using Java API?

    Is there any demo app that can establish NFC connection between two Nokia C7-00 devices ?

    Thanks

  2. #2
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    Re: How can I tag two Nokia C7-00 device using NFC ?

    According to this looks we can have peer to peer connection
    http://www.developer.nokia.com/Commu...131_NFC_-_FAQs

    See Does the Nokia 6131 NFC SDK support NFCIP-1 connection? If so, how can I use that?
    Java API works with C7 so we can built example easily, try...

  3. #3
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    Re: How can I tag two Nokia C7-00 device using NFC ?

    import javax.microedition.contactless.ContactlessException;
    import javax.microedition.contactless.DiscoveryManager;
    import javax.microedition.contactless.TargetListener;
    import javax.microedition.contactless.TargetProperties;
    import javax.microedition.contactless.TargetType;
    import javax.microedition.lcdui.Display;
    import javax.microedition.lcdui.Form;
    import javax.microedition.lcdui.TextField;
    import javax.microedition.midlet.MIDlet;
    import javax.microedition.midlet.MIDletStateChangeException;

    // Simple MIDlet to read the serial number of NDEF tag
    public class ReadSerial extends MIDlet implements TargetListener {

    private Form form;
    private TextField textField;

    protected void startApp() throws MIDletStateChangeException {
    // Get instance of NFC Discovery Manager
    DiscoveryManager dm = DiscoveryManager.getInstance();

    // Register NDEF_TAG target to discovery
    try {
    dm.addTargetListener(this, TargetType.NDEF_TAG);
    } catch (IllegalStateException e) {
    // Catch IllegalStateException
    } catch (ContactlessException e) {
    // Catch ContactlessException
    }

    // Initialize and show user interface elements
    form = new Form("ReadSerial");
    textField = new TextField("Unique identifier:", "", 0, TextField.UNEDITABLE);
    form.append(textField);
    Display.getDisplay(this).setCurrent(form);
    }

    protected void pauseApp() {
    }

    protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
    }

    public void targetDetected(TargetProperties[] prop) {
    // Set unique identifier of the detected target on the Text Field
    textField.setString(prop[0].getUid());
    }

    }


    Its a simple tag reader app to find out uid of tag writer, but still its not working on two C7 devices....

  4. #4
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    Re: How can I tag two Nokia C7-00 device using NFC ?

    Hi,

    You can see working example from this page http://www.developer.nokia.com/Commu..._Code_Examples and compare your one to find the problem

  5. #5
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    Re: How can I tag two Nokia C7-00 device using NFC ?

    I have tried all these example between two Nokia C7-00 devices but none of them were working... Can u suggest me any other solution?

  6. #6
    Super Contributor
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    Re: How can I tag two Nokia C7-00 device using NFC ?

    At least Symbian C++ examples work for sure. I have done some test. But I have not used J2ME much.
    Does it help you if you use Qt/QML/Symbian C++? These gives you more control over the device.

  7. #7
    Registered User
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    Hagenberg, Austria
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    Re: How can I tag two Nokia C7-00 device using NFC ?

    Hallo,

    the C7 cannot operate as NFC tag. Therefore, your code (TargetListener) will not work for your scenario. I don't know if peer-to-peer communication is supported in the C7's Java implementation, but as mahbub suggests, you can stick to Qt, ...

    br
    Michael

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