I am trying to determine if there is a tag that the phone scanned, and not an intent launched from the story.
The problem is that when the tag is scanned, an exception is thrown, as if connect () failed.
I leave the phone in the tag to give it enough time to read the tag.
Any ideas why the connection is not working?
Thanks in advance.
Log.e(TAG, "just scanned an nfc tag and DB must be empty"); Tag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG); tagId = bytesToHexString(tag.getId()); Log.e(TAG, "tagId immediately after scanning nfc tag = " + tagId); if (NfcAdapter.ACTION_NDEF_DISCOVERED.equals(getIntent().getAction())) { Ndef ndefTag = Ndef.get(tag); try { ndefTag.connect(); // this should already perform an IO operation and should therefore fail if there is no tag // NdefMessage ndefMsg = ndefTag.getNdefMessage(); // this reads the current NDEF message from the tag and consequently causes an IO operation } catch (Exception e) { // there is no tag or communication with tag dropped Log.e(TAG, "There a problem with connecting to the tag using Ndef.connect("); } finally { try { ndefTag.close(); } catch (Exception e) { } } Log.e(TAG, "A formatted NFC Tag just scanned");
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06-02 13:32:30.226: E/NfcscannerActivity(24683): formatted three days ago time = 30/May/14 13:32pm 06-02 13:32:30.226: E/LoginValidate(24683): scantime from db = 2014-06-02 11:40:20.187 specific time = 2014-05-30 13:32:30.237 06-02 13:32:30.236: E/NfcscannerActivity(24683): action of intent = android.nfc.action.NDEF_DISCOVERED 06-02 13:32:30.236: E/LoginValidate(24683): getting last tag touched 06-02 13:32:30.236: E/NfcscannerActivity(24683): just scanned an nfc tag and DB must be empty 06-02 13:32:30.246: I/System.out(24683): 04 06-02 13:32:30.246: I/System.out(24683): 4e 06-02 13:32:30.246: I/System.out(24683): 0e 06-02 13:32:30.246: I/System.out(24683): 22 06-02 13:32:30.246: I/System.out(24683): c2 06-02 13:32:30.246: I/System.out(24683): 23 06-02 13:32:30.246: I/System.out(24683): 84 06-02 13:32:30.246: E/NfcscannerActivity(24683): tagId immediately after scanning nfc tag = 0x044e0e22c22384 06-02 13:32:30.256: E/NfcscannerActivity(24683): There a problem with connecting to the tag using Ndef.connect( 06-02 13:32:30.256: E/NfcscannerActivity(24683): A formatted NFC Tag just scanned 06-02 13:32:30.256: E/NfcscannerActivity(24683): ndefrecord has a length of 1 06-02 13:32:30.256: E/NfcscannerActivity(24683): TextRecord.text = 1,10,5,Alice riswell 06-02 13:32:30.256: E/NfcscannerActivity(24683): payload has a length of 20
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if (NfcAdapter.ACTION_NDEF_DISCOVERED.equals(getIntent().getAction())) { new Thread(new Runnable() { @Override public void run() { Ndef ndefTag = Ndef.get(tag); try { Log.e(TAG, "about to test connect()********************************************"); ndefTag.connect(); // this should already perform an IO operation and should therefore fail if there is no tag Log.e(TAG, "Ndef.connect() connected!********************************************"); NdefMessage ndefMsg = ndefTag.getNdefMessage(); // this reads the current NDEF message from the tag and consequently causes an IO operation } catch (Exception e) { // there is no tag or communication with tag dropped Log.e(TAG, "There a problem with connecting to the tag using Ndef.connect("); } finally { try { ndefTag.close(); } catch (Exception e) { } } } }).start();
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06-02 14:03:19.396: E/NfcscannerActivity(15153): we need to insert record as db empty 06-02 14:03:19.396: E/NfcscannerActivity(15153): about to test connect()******************************************** 06-02 14:03:19.396: E/NfcscannerActivity(15153): formattedNowTime = 2014-06-02 14:03:19.405 06-02 14:03:19.396: E/NfcscannerActivity(15153): There a problem with connecting to the tag using Ndef.connect(
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