public TextRecord Parse(NdefRecord record)
{
Preconditions.CheckArgument(record.Tnf == NdefRecord.TnfWellKnown);
var typeInfo = record.GetTypeInfo();
if (record.GetTypeInfo()[0] != NdefRecord.RtdText[0])
{
throw new Exception();
}
//Preconditions.CheckArgument(Arrays.Equals(record.GetTypeInfo()[0], NdefRecord.RtdText[0]));
// Preconditions.CheckArgument(Array.Equals(record.GetType(), NdefRecord.RtdText));
var payload = record.GetPayload();
string textEncoding = (payload[0] & 0200) == 0 ? "UTF-8" : "UTF-16";
int languageCodeLength = payload[0] & 0077;
Encoding enc = Encoding.GetEncoding("US-ASCII");
Encoding encText = Encoding.GetEncoding(textEncoding);
string languageCode = enc.GetString(payload, 0, languageCodeLength);
string text = encText.GetString(payload, languageCodeLength + 1, payload.Length - languageCodeLength - 1);
return(new TextRecord(text));
/*
* String textEncoding = ((payload[0] & 0200) == 0) ? "UTF-8" : "UTF-16";
* int languageCodeLength = payload[0] & 0077;
* String languageCode = new String(payload, 1, languageCodeLength, "US-ASCII");
* String text =
* new String(payload, languageCodeLength + 1,
* payload.length - languageCodeLength - 1, textEncoding);
* return new TextRecord(languageCode, text);
*/
}
public void ReadFromTag(Tag tag, Intent intent)
{
var messages = intent.GetParcelableArrayExtra(NfcAdapter.ExtraNdefMessages);
Ndef ndef = Ndef.Get(tag);
try
{
ndef.Connect();
NdefMessage[] ndefMessages = new NdefMessage[messages.Length];
for (int i = 0; i < messages.Length; i++)
{
ndefMessages[i] = (NdefMessage)messages[i];
}
NdefRecord record = ndefMessages[0].GetRecords()[0];
byte[] payload = record.GetPayload();
var msg = System.Text.Encoding.UTF8.GetString(payload);
msg = msg.Remove(0, 3);
EditText AccNoetxt = FindViewById <EditText>(Resource.Id.AccNoetxt);
AccNoetxt.Text = msg;
PublicVariables.AccountNo = msg;
ndef.Close();
}
catch (Exception e)
{
Toast.MakeText(this, "Message: " + e.Message, ToastLength.Long).Show();
}
}
private UriRecord ParseWellKnown(NdefRecord record)
{
//Preconditions.CheckArgument(Arrays.Equals(record.GetTypeInfo(), NdefRecord.RtdUri));
if (record.GetTypeInfo()[0] != NdefRecord.RtdUri[0])
{
throw new Exception();
}
// Preconditions.checkArgument(Arrays.equals(record.getType(), NdefRecord.RTD_URI));
// byte[] payload = record.getPayload();
/// *
// * payload[0] contains the URI Identifier Code, per the
// * NFC Forum "URI Record Type Definition" section 3.2.2.
// *
// * payload[1]...payload[payload.length - 1] contains the rest of
// * the URI.
// */
// String prefix = URI_PREFIX_MAP.get(payload[0]);
// byte[] fullUri =
// Bytes.concat(prefix.getBytes(Charset.forName("UTF-8")), Arrays.copyOfRange(payload, 1,
// payload.length));
// Uri uri = Uri.parse(new String(fullUri, Charset.forName("UTF-8")));
// return new UriRecord(uri);
var payload = record.GetPayload();
string prefix = Utility.UriMap(payload[0]);
Encoding enc = Encoding.GetEncoding("UTF-8");
string text = enc.GetString(payload, 1, payload.Length - 1);
return(new UriRecord(prefix + text));
}
private string ParseUriRecord(NdefRecord ndefRecord)
{
byte[] payload = ndefRecord.GetPayload();
// Get the Language Code
int languageCodeLength = payload[0] & 0063;
return(new String(System.Text.UTF8Encoding.ASCII.GetChars(payload), languageCodeLength + 1, payload.Length - languageCodeLength - 1));
}
/// <summary>
///
/// </summary>
/// <param name="ndefRecord"></param>
/// <returns></returns>
private string ParseNdefRecord(NdefRecord ndefRecord)
{
byte[] payload = ndefRecord.GetPayload();
// Get the Language Code
int languageCodeLength = payload[0] & 0063;
char[] payloadChars = UTF8Encoding.ASCII.GetChars(payload);
var payloadValue = new String(payloadChars, languageCodeLength + 1, payload.Length - languageCodeLength - 1);
return(payloadValue);
}
private UriRecord ParseAbsolute(NdefRecord record)
{
/*
* byte[] payload = record.getPayload();
* Uri uri = Uri.parse(new String(payload, Charset.forName("UTF-8")));
* return new UriRecord(uri);
*/
var payload = record.GetPayload();
Encoding enc = Encoding.GetEncoding("UTF-8");
string text = enc.GetString(payload);
return(new UriRecord(text));
}
internal SmartPoster Parse(NdefRecord record)
{
/*
*
* Preconditions.checkArgument(record.getTnf() == NdefRecord.TNF_WELL_KNOWN);
* Preconditions.checkArgument(Arrays.equals(record.getType(), NdefRecord.RTD_SMART_POSTER));
* try {
* NdefMessage subRecords = new NdefMessage(record.getPayload());
* return parse(subRecords.getRecords());
* } catch (FormatException e) {
* throw new IllegalArgumentException(e);
* }
*/
Preconditions.CheckArgument(record.Tnf == NdefRecord.TnfWellKnown);
//Preconditions.CheckArgument(Arrays.Equals(record.GetTypeInfo(), NdefRecord.RtdSmartPoster));
if (record.GetTypeInfo()[0] != NdefRecord.RtdSmartPoster[0])
{
throw new Exception();
}
NdefMessage subRecords = new NdefMessage(record.GetPayload());
return(Parse(subRecords.GetRecords()));
}
protected override void OnNewIntent(Intent intent)
{
base.OnNewIntent(intent);
if (_nfc_avaible && _do_scanning && intent.Action == NfcAdapter.ActionTagDiscovered)
{
Tag tag = intent.GetParcelableExtra(NfcAdapter.ExtraTag) as Tag;
if (tag != null)
{
IParcelable[] raw_data = intent.GetParcelableArrayExtra(NfcAdapter.ExtraNdefMessages);
if (raw_data != null)
{
NdefRecord record = (raw_data[0] as NdefMessage).GetRecords()[0];
if (record != null)
{
TagScanner._on_result(record.GetPayload());
_do_scanning = false;
return;
}
}
}
}
TagScanner._on_result(null);
}
private string ReadText(NdefRecord record)
{
return(Encoding.UTF8.GetString(record.GetPayload()));
}
public AndroidNdefRecord(NdefRecord nativeRecord)
{
TypeNameFormat = GetTypeNameFormat(nativeRecord.Tnf);
Payload = nativeRecord.GetPayload();
}