private void readTag(Tag t) {
// get NDEF tag details
Ndef ndefTag = Ndef.get(t);
// get NDEF message details
NdefMessage ndefMesg = ndefTag.getCachedNdefMessage();
if (ndefMesg == null) {
return;
}
NdefRecord[] ndefRecords = ndefMesg.getRecords();
if (ndefRecords == null) {
return;
}
for (NdefRecord record : ndefRecords) {
short tnf = record.getTnf();
String type = new String(record.getType());
if (tnf == NdefRecord.TNF_WELL_KNOWN && Arrays.equals(type.getBytes(), NdefRecord.RTD_URI)) {
String url = new String(record.getPayload());
if (url.startsWith(ATTENDEE_URL_PREFIX)) {
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(Uri.parse("https://" + url.substring(1)));
startActivity(i);
return;
}
}
}
}
@Override
protected String doInBackground(Tag... params) {
Tag tag = params[0];
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
&& Arrays.equals(ndefRecord.getType(), NdefRecord.RTD_TEXT)) {
try {
return readText(ndefRecord);
} catch (UnsupportedEncodingException e) {
Log.e(TAG, "Unsupported Encoding", e);
}
}
}
return null;
}
private void connectToNDEF(Tag tag) {
Ndef ndef = Ndef.get(tag);
try {
receiveTab.append("\n" + ndef.getType());
NdefMessage message = ndef.getCachedNdefMessage();
if (message != null) {
NdefRecord[] recordsFromMessage = message.getRecords();
for (int i = 0; i < recordsFromMessage.length; i++) {
printMessage(recordsFromMessage[i]);
}
} else {
receiveTab.append("\nNull message");
}
receiveTab.append("\nNDEF did work!");
} catch (Exception ex) {
receiveTab.append("\nNDEF did not work");
}
}
@Override
protected void onNewIntent(Intent intent) {
// if extra is present, it has priority on the saved poll
Poll serializedPoll = (Poll) intent.getSerializableExtra("poll");
if (serializedPoll != null) {
poll = serializedPoll;
}
if (intent.getParcelableExtra(NfcAdapter.EXTRA_TAG) != null) {
Intent broadcastIntent = new Intent(BroadcastIntentTypes.nfcTagTapped);
broadcastIntent.putExtra(
NfcAdapter.EXTRA_TAG, intent.getParcelableExtra(NfcAdapter.EXTRA_TAG));
LocalBroadcastManager.getInstance(this).sendBroadcast(broadcastIntent);
}
Tag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
Ndef ndef = Ndef.get(tag);
if (ndef == null) {
Toast.makeText(
this, getResources().getText(R.string.toast_nfc_tag_read_failed), Toast.LENGTH_LONG)
.show();
} else {
NdefMessage msg;
msg = ndef.getCachedNdefMessage();
config = new String(msg.getRecords()[0].getPayload()).split("\\|\\|");
// saving the values that we got
SharedPreferences.Editor editor = preferences.edit();
editor.putString("SSID", ssid);
editor.commit();
if (checkIdentification()) {
connect(config, this);
}
}
super.onNewIntent(intent);
}
