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PONFC tag with text data and package name not working properly
 

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  1. PONFC tag with text data and package name not working properly
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    <p>I am developing small android application in which i wanted to use <strong>NFC</strong> functionality. I did this in following ways </p> <p>On writer side :</p> <pre><code> boolean addAAR = true; String uniqueId = "qrfid://nilkash"; byte[] uriField = uniqueId.getBytes(Charset.forName("US-ASCII")); System.arraycopy(uriField, 0, payload, 0, uriField.length); NdefRecord rtdUriRecord = new NdefRecord(NdefRecord.TNF_WELL_KNOWN, NdefRecord.RTD_TEXT, new byte[0], uriField); if(addAAR) { return new NdefMessage(new NdefRecord[] { rtdUriRecord, NdefRecord.createApplicationRecord("com.example.androidnfcurlreader") }); </code></pre> <p>And On receiver side I am using this in manifest file </p> <pre><code> &lt;intent-filter&gt; &lt;action android:name="android.intent.action.MAIN" /&gt; &lt;category android:name="android.intent.category.LAUNCHER" /&gt; &lt;/intent-filter&gt; &lt;intent-filter&gt; &lt;action android:name="android.nfc.action.NDEF_DISCOVERED" /&gt; &lt;category android:name="android.intent.category.DEFAULT" /&gt; &lt;data android:mimeType="application/com.example.androidnfcurlreader" /&gt; &lt;/intent-filter&gt; </code></pre> <p>According to my few things are working fine like when i read tag it launch my application but few things are going wrong when i read tag it launch my application but not reading data from it. once app is opened I have to again read tag for getting data. I check for this so when application launch it shows intent action as main instead of NDEF_DISCOVERED. while application is open and if I read tag it shows me data and at that time action is NDEF_DISCOVERED. But what I want when i read tag it opens my application and mush show me data as well. </p> <p>What to do? How to solve this problem? Am I doing something wrong? Please help. Thank you .</p> <pre><code> //Reading of data from tag is like this // inside oncreate activity handleIntent(intent); // inside onresume setupForegroundDispatch(activity, mNfcAdapter); // inside on pause stopForegroundDispatch(activity, mNfcAdapter); // on new intent handleIntent(intent); private void handleIntent(Intent intent) { String action = intent.getAction(); if (NfcAdapter.ACTION_NDEF_DISCOVERED.equals(action)) { String type = intent.getType(); if (MIME_TEXT_PLAIN.equals(type)) { Tag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG); sendData(ndefmessage(tag)); } else { Log.d(TAG, "Wrong mime type: " + type); } } else if (NfcAdapter.ACTION_TECH_DISCOVERED.equals(action)) { // In case we would still use the Tech Discovered Intent Tag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG); String[] techList = tag.getTechList(); String searchedTech = Ndef.class.getName(); for (String tech : techList) { if (searchedTech.equals(tech)) { //new NdefReaderTask().execute(tag); ndefmessage(tag); break; } } } } private void setupForegroundDispatch(final Activity activity, NfcAdapter adapter) { final Intent intent = new Intent(activity.getApplicationContext(), activity.getClass()); intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP); final PendingIntent pendingIntent = PendingIntent.getActivity(activity.getApplicationContext(), 0, intent, 0); IntentFilter[] filters = new IntentFilter[1]; String[][] techList = new String[][]{}; // Notice that this is the same filter as in our manifest. filters[0] = new IntentFilter(); filters[0].addAction(NfcAdapter.ACTION_NDEF_DISCOVERED); filters[0].addCategory(Intent.CATEGORY_DEFAULT); try { filters[0].addDataType(MIME_TEXT_PLAIN); } catch (MalformedMimeTypeException e) { throw new RuntimeException("Check your mime type."); } adapter.enableForegroundDispatch(activity, pendingIntent, filters, techList); } private static void stopForegroundDispatch(final Activity activity, NfcAdapter adapter) { adapter.disableForegroundDispatch(activity); } private String ndefmessage(Tag tag) { Tag tag1 = tag; Ndef ndef = Ndef.get(tag); if (ndef == null) { // NDEF is not supported by this Tag. return null; } NdefMessage ndefMessage = ndef.getCachedNdefMessage(); NdefRecord[] records = ndefMessage.getRecords(); for (NdefRecord ndefRecord : records) { if (ndefRecord.getTnf() == NdefRecord.TNF_WELL_KNOWN &amp;&amp; Arrays.equals(ndefRecord.getType(), NdefRecord.RTD_TEXT)) { try { return readText1(ndefRecord); } catch (UnsupportedEncodingException e) { Log.e(TAG, "Unsupported Encoding", e); } } } return null; } private String readText1(NdefRecord record) throws UnsupportedEncodingException { byte[] payload = record.getPayload(); String textEncoding = ((payload[0] &amp; 128) == 0) ? "UTF-8" : "UTF-16"; int languageCodeLength = payload[0] &amp; 0063; return new String(payload, 0, payload.length, textEncoding); } private void sendData(String result) { eventlistsetter.getRfidListener().handleEvent(0, result); } } </code></pre>
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    1. USnilkash
    1. USnilkash
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      1. PONFC tag with text data and package name not working properly
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    1. COAny one have solution for this?
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      1. PONFC tag with text data and package name not working properly
      1. USnilkash
    2. COIt looks like tag is correct. Could you show code how do you get tag in application?
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      1. PONFC tag with text data and package name not working properly
      1. UStse
    3. CO@tsypa thank you for replay see I did some changes and reading of data from nfc tag added into question. Can you please look at the and help me to solve my problem. Thank you for your help
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      1. PONFC tag with text data and package name not working properly
      1. USnilkash
 

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