Under Android Runtime NDEF tags with 10.3.1 write error

I'm trying to get an app Android our company wrote working under Blackberry using the NFC support newly added to 10.3.

I use a Q10 to test 10.3.1 running, and I'm able to get the installed application and reading our NDEF labels without problem. Attempt to erase or write tags but seems to fail, while this works very well on our test Android devices. I get the following in the logcat when debugging:

18968818-11/com.app.apptest D/BBNfcConnector? FC polling result: 1
18968818-11/com.app.apptest D/BBNfcConnector? Changes detected from index(0) FD(37)
18968818-11/com.app.apptest D/BBNfcConnector? connection ID available for target
18968818-11/com.app.apptest D/BBNfcConnector? Msg count 1, rc=0
18968818-11/com.app.apptest I/BBNfcConnector? Notify subscriber with NFC event, type=2
18968818-11/com.app.apptest I/BBNfcAdapter? NFC Event received, type=2
18968818-11/com.app.apptest D/NfcTarget? Content of target:
18968818-11/com.app.apptest D/NfcTarget? NDEF_TYPE : 2
18968818-11/com.app.apptest D/NfcTarget? NDEF_LOCKED : FALSE
18968818-11/com.app.apptest D/NfcTarget? NDEF_LOCKABLE : TRUE
18968818-11/com.app.apptest D/NfcTarget? NDEF_FREE_SPACE : 134
18968818-11/com.app.apptest D/NfcTarget? NDEF_CAPABLE_TYPE :
18968818-11/com.app.apptest I/NfcDispatcher? DispatchInfo URI:null MIME:null
18968818-11/com.app.apptest D/BBNfcConnector? Polling NFC FD(37)
18968818-1/com.app.apptest I/BBNfcTag? BBNfcTag_ReaderWriter_nfcUnregister: done
18968818-1/com.app.apptest E/BBNfcTag? BBNfcTag_nfcNdefWrite: Error 7, target=0x11bd7020
18968818-1/com.app.apptest W/System.err? java.io.IOException
18968818-1/com.app.apptest W/System.err? at android.nfc.tech.Ndef.writeNdefMessage(Ndef.java:319)

The calling code is something like the below:

/**Writes out a URI Ndef record along with a text record in one go*/

private void writeNdef(String text, Tag tag) throws IOException, FormatException {
    //First record is a weblink, then our ID data so that unanticipated tag scans respond gracefully
    NdefRecord[] records = {NdefRecord.createUri("http://www.google.com"), createRecord(text) };
    NdefMessage message = new NdefMessage(records);
    issueNdef(message, tag);
}

/**Performs the actual connection to the NFC tag and writes out the given message to it*/
private void issueNdef(NdefMessage message, Tag tag) throws IOException, FormatException {
    Ndef ndef = Ndef.get(tag);
    ndef.connect();
    ndef.writeNdefMessage(message);
    ndef.close();
}

Shows the system to launch a "BBNfcTag_nfcNdefWrite: error 7" when he tries to deliver scripture to the tag in question (the exact IOException occurs at the level of the line "ndef.writeNdefMessage (message);" '). We use fairly standard NTAG203 tags and they are tested as works fine on other devices. Any ideas as to why I have trouble getting these tags to write on the BlackBerry?

Mark,

Thanks for the sample; It was useful to detect the problem (now resolved) by comparison.

For someone else who comes across this thread, the question was how I was manipulating the intent of NFC tag. On my other test devices (android), immediately call my intention of onNewIntent() handler as shown below:

@Override
protected void onNewIntent(Intent intent) {
    intentHandler.Dispatch(intent);
}

works very well. On BlackBerry, an NFC unsubscribe occurs immediately when the triggers of the intention and the context seems to be lost if try to call directly. Instead, I needed to run a setIntent() and then manage OnResume intent, taking care to add a boolean indicator so it tries only to interface with the NFC tag only once and that the curriculum vitae triggered by the intentions of the NFC. See below:

private boolean intentHandled = true;

@Override
protected void onResume() {
    super.onResume();

    //...

    if(intentHandled == false &&
        (NfcAdapter.ACTION_TAG_DISCOVERED.equals(getIntent().getAction()) ||
        NfcAdapter.ACTION_NDEF_DISCOVERED.equals(getIntent().getAction()))) {

        //Decide what to do based on tag type and current program view
        intentHandler.Dispatch(getIntent());
        intentHandled = true;
    }

}

@Override
protected void onNewIntent(Intent intent) {
    intentHandled = false;
    setIntent(intent);
}

With these changes, I am able to get writing reliable tag on my Q10 without negative impact on my ability to write on my other devices Android test.

Tags: BlackBerry Developers

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