public Guid PublishUri(Uri uri)
{
var key = Guid.NewGuid();
this.published.Add(key, NdefRecord.CreateUri(uri.AbsoluteUri));
return(key);
}
public NdefRecord CreateMimeRecord(String mimeType, byte[] payload)
{
byte[] mimeBytes = Encoding.UTF8.GetBytes(mimeType);
NdefRecord mimeRecord = new NdefRecord(
NdefRecord.TnfMimeMedia, mimeBytes, new byte[0], payload);
return(mimeRecord);
}
private NdefRecord CreateTextRecord(string payload)
{
byte[] textBytes = Encoding.UTF8.GetBytes(payload);
NdefRecord record = new NdefRecord(NdefRecord.TnfWellKnown,
NdefRecord.RtdText.ToArray(), new byte[0], textBytes);
return(record);
}
private void btnReadAll_Click(object sender, EventArgs e)
{
if (!connActive)
{
return;
}
string tmpStr = string.Empty;
int startBlock = 4, endBlock = 0, dataLength = 0, dataAllLength;
int dataPageIndex = 0;
byte[] recvData = new byte[6];
recvData = ReadDataFromCard(startBlock, 4);
dataLength = recvData[1];
dataAllLength = dataLength + 3;
if (dataLength > 0)
{
byte[] effectiveData = new byte[dataLength];
effectiveData[0] = recvData[2];
effectiveData[1] = recvData[3];
endBlock = dataAllLength % 4 == 0 ? dataAllLength / 4 + startBlock : dataAllLength / 4 + startBlock + 1;
for (int iBlock = startBlock + 1; iBlock < endBlock; iBlock++)
{
recvData = ReadDataFromCard(iBlock, 4);
for (int iBit = 0; iBit < 4; iBit++)
{
if ((dataPageIndex * 4 + iBit + 2) < effectiveData.Length)
{
effectiveData[dataPageIndex * 4 + iBit + 2] = recvData[iBit];
}
}
dataPageIndex++;
}
try
{
NdefMessage message = NdefMessage.FromByteArray(effectiveData);
NdefRecord record = message[0];
if (record.CheckSpecializedType(false) == typeof(NdefTextRecord))
{
//Convert and extract Smart Poster info
var textRecord = new NdefTextRecord(record);
WriteLog(3, 0, textRecord.Text);
}
}
catch
{
}
}
}
private NdefRecord GenerateMimeRecord(Dictionary <string, string> values)
{
NdefRecord rec = new NdefRecord(NdefRecord.TypeNameFormatType.Mime, Encoding.ASCII.GetBytes(FLAGCARRIER_MIME_TYPE))
{
Payload = GenerateCompressedPayload(values)
};
return(rec);
}
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));
}
private void OnWriteTag(Intent intent, string content)
{
if (null != content)
{
var tag = intent.GetParcelableExtra(NfcAdapter.ExtraTag) as Tag;
if (tag != null)
{
Ndef ndef = Ndef.Get(tag);
if (ndef != null && ndef.IsWritable)
{
var payload = Encoding.ASCII.GetBytes(content);
var mimeBytes = Encoding.ASCII.GetBytes("text/plain");
var record = new NdefRecord(NdefRecord.TnfWellKnown, mimeBytes, new byte[0], payload);
var ndefMessage = new NdefMessage(new[] { record });
ndef.Connect();
ndef.WriteNdefMessage(ndefMessage);
ndef.Close();
}
else
{
NdefFormatable ndefFormatable = NdefFormatable.Get(tag);
if (ndefFormatable != null)
{
try
{
var payload = Encoding.ASCII.GetBytes(content);
var mimeBytes = Encoding.ASCII.GetBytes("text/plain");
var record = new NdefRecord(NdefRecord.TnfWellKnown, mimeBytes, new byte[0], payload);
var ndefMessage = new NdefMessage(new[] { record });
ndefFormatable.Connect();
ndefFormatable.Format(ndefMessage);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
finally
{
try
{
ndefFormatable.Close();
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
}
}
}
}
}
static void Main(string[] args)
{
// Dynamically construct some more NDEF records
var spRecord = new NdefSpRecord
{
Uri = "http://andijakl.github.io/ndef-nfc/",
NfcAction = NdefSpActRecord.NfcActionType.DoAction
};
spRecord.AddTitle(new NdefTextRecord {
LanguageCode = "en", Text = "NFC Library"
});
spRecord.AddTitle(new NdefTextRecord {
LanguageCode = "de", Text = "NFC Bibliothek"
});
NfcRecords.Add("SmartPoster", spRecord);
// Ensure the path exists
var tagsDirectory = Path.Combine(Environment.CurrentDirectory, FileDirectory);
Directory.CreateDirectory(tagsDirectory);
// Write tag contents to files
foreach (var curNdefRecord in NfcRecords)
{
WriteTagFile(tagsDirectory, curNdefRecord.Key, curNdefRecord.Value);
}
// Multi-record file
var record1 = new NdefUriRecord {
Uri = "http://www.twitter.com"
};
var record2 = new NdefAndroidAppRecord {
PackageName = "com.twitter.android"
};
var twoRecordsMsg = new NdefMessage {
record1, record2
};
WriteTagFile(tagsDirectory, "TwoRecords", twoRecordsMsg);
var record3 = new NdefRecord
{
TypeNameFormat = NdefRecord.TypeNameFormatType.ExternalRtd,
Type = Encoding.UTF8.GetBytes("custom.com:myapp")
};
var threeRecordsMsg = new NdefMessage {
record1, record3, record2
};
WriteTagFile(tagsDirectory, "ThreeRecords", threeRecordsMsg);
// Success message on output
Console.WriteLine("Generated {0} tag files in {1}.", NfcRecords.Count, tagsDirectory);
Debug.WriteLine("Generated {0} tag files in {1}.", NfcRecords.Count, tagsDirectory);
}
public NdefIcalendarRecord(NdefRecord other)
: base(other)
{
if (!IsRecordType(this))
{
throw new NdefException(NdefExceptionMessagesUwp.ExInvalidCopy);
}
ConvertIcalendarToAppointment(_payload);
}
private void MessageReceived(ProximityDevice sender, ProximityMessage message)
{
Dispatcher.BeginInvoke(() => {
var buf = DataReader.FromBuffer(message.Data);
List <NdefRecord> recordList = new List <NdefRecord>();
NdefRecordUtility.ReadNdefRecord(buf, recordList);
NdefRecord firstRecord = recordList[0];
byte[] payload = firstRecord.Payload;
GetBadgeData(payload);
});
}
internal bool IsPoster(NdefRecord record)
{
try
{
Parse(record);
return(true);
}
catch
{
return(false);
}
}
/// <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);
}
/// <summary>
/// This method is called when an NFC tag is discovered by the application.
/// </summary>
/// <param name="intent"></param>
protected override void OnNewIntent(Intent intent)
{
if (_inReadMode)
{
_inReadMode = false;
var tag = intent.GetParcelableExtra(NfcAdapter.ExtraTag) as Tag;
var rawMsgs = intent.GetParcelableArrayExtra(NfcAdapter.ExtraNdefMessages);
if (tag == null)
{
return;
}
if (NfcAdapter.ExtraTag.Contains("nfc"))
{
HandleNFC(intent, true);
}
//added the below lines, can delete if they don't work.
//NdefRecord payload = ((NdefMessage)rawMsgs[0]).GetRecords()[0];
//byte[] currentPayloadBytes = payload.GetPayload();
//String currentPayloadString = System.Text.Encoding.UTF8.GetString(currentPayloadBytes, 0, currentPayloadBytes.Length);
var tagId = tag.GetId();
_tagUid = ByteArrayToString(tagId);
Log.Info(this.Application.PackageName, "Card UID is " + _tagUid);
//DisplayMessage("Card UID is " + _tagUid + newLine + "Payload is " + "'" + currentPayloadString + "'");
}
else if (_inWriteMode)
{
_inWriteMode = false;
var tag = intent.GetParcelableExtra(NfcAdapter.ExtraTag) as Tag;
if (tag == null)
{
return;
}
// These next few lines will create a payload (consisting of a string)
// and a mimetype. NFC record are arrays of bytes.
var payload = Encoding.ASCII.GetBytes(_writeTextView.Text);
var nfcRecord = new NdefRecord(NdefRecord.TnfWellKnown, new byte[0], new byte[0], payload);
var ndefMessage = new NdefMessage(new[] { nfcRecord });
if (!TryAndWriteToTag(tag, ndefMessage))
{
// Maybe the write couldn't happen because the tag wasn't formatted?
TryAndFormatTagWithMessage(tag, ndefMessage);
}
}
}
private void Write(object sender, EventArgs e)
{
lock (this)
{
var label = FindViewById <TextView>(Resource.Id.DataLabel);
try
{
if (nfcTag == null)
{
label.Text = "nfc tag is null";
return;
}
var data = DateTime.Now.ToString();
/*
* var ndefRecord = new NdefRecord(NdefRecord.TnfMimeMedia,
* null,
* new byte[] { },
* Encoding.UTF8.GetBytes(data));
*/
var ndefRecord = NdefRecord.CreateExternal(
"Smartisan.Nfc.Smartisan.Nfc", // your domain name
"myapp", // your type name
Encoding.UTF8.GetBytes(data)); // payload
var ndef = Ndef.Get(nfcTag);
ndef.Connect();
ndef.WriteNdefMessage(new NdefMessage(ndefRecord));
ndef.Close();
label.Text = $"Data:{newLine}{data}";
}
catch (Exception ex)
{
label.Text += $"{newLine} Exception: {newLine} {ex.Message} {newLine} {ex.StackTrace}";
}
finally
{
if (nfcTag != null)
{
if (Ndef.Get(nfcTag).IsConnected)
{
Ndef.Get(nfcTag).Close();
}
}
}
}
}
public override byte[] GetKey(KeyProviderQueryContext ctx)
{
byte[] key = null;
try
{
KeePassRFIDConfig rfidConfig = KeePassRFIDConfig.GetFromCurrentSession();
ChipAction(new Action <Chip>(delegate(Chip chip)
{
if (rfidConfig.KeyType == KeyType.NFC)
{
// Only tag type 4 supported for now.
NFCTagCardService nfcsvc = chip.getService(CardServiceType.CST_NFC_TAG) as NFCTagCardService;
if (nfcsvc == null)
{
throw new KeePassRFIDException(Properties.Resources.UnsupportedNFCTag);
}
NdefMessage msg = nfcsvc.readNDEF();
if (msg.getRecordCount() > 0)
{
NdefRecordCollection records = msg.getRecords();
if (records.Count > 0)
{
// Always use first record only
NdefRecord record = records[0];
// Don't care about payload type, use whole payload as the key
UCharCollection payload = record.getPayload();
if (payload.Count > 0)
{
key = payload.ToArray();
}
}
}
}
else
{
UCharCollection csn = chip.getChipIdentifier();
if (csn.Count > 0)
{
key = csn.ToArray();
}
}
}), rfidConfig);
}
catch (KeePassRFIDException ex)
{
MessageBox.Show(ex.Message, Properties.Resources.PluginError, MessageBoxButtons.OK, MessageBoxIcon.Error);
}
return(key);
}
private bool IsOurRecord(NdefRecord rec)
{
if (rec.TypeNameFormat != NdefRecord.TypeNameFormatType.Mime)
{
return(false);
}
if (Encoding.ASCII.GetString(rec.Type) != FLAGCARRIER_MIME_TYPE)
{
return(false);
}
return(true);
}
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));
}
/// <summary>
/// Transforms a <see cref="NFCNdefRecord"/> into an Android <see cref="NdefRecord"/>
/// </summary>
/// <param name="record">Object <see cref="NFCNdefRecord"/></param>
/// <returns>Android <see cref="NdefRecord"/></returns>
NdefRecord GetAndroidNdefRecord(NFCNdefRecord record)
{
if (record == null)
{
return(null);
}
NdefRecord ndefRecord = null;
switch (record.TypeFormat)
{
case NFCNdefTypeFormat.WellKnown:
var languageCode = record.LanguageCode;
if (string.IsNullOrWhiteSpace(languageCode))
{
languageCode = Configuration.DefaultLanguageCode;
}
if (languageCode.Length > 5)
{
languageCode = languageCode.Substring(0, 5); //max support 5 chars like en-US or de-AT
}
ndefRecord = NdefRecord.CreateTextRecord(languageCode, Encoding.UTF8.GetString(record.Payload));
//no need to force it to 2 letters only
//ndefRecord = NdefRecord.CreateTextRecord(languageCode.Substring(0, 2), Encoding.UTF8.GetString(record.Payload));
break;
case NFCNdefTypeFormat.Mime:
ndefRecord = NdefRecord.CreateMime(record.MimeType, record.Payload);
break;
case NFCNdefTypeFormat.Uri:
ndefRecord = NdefRecord.CreateUri(Encoding.UTF8.GetString(record.Payload));
break;
case NFCNdefTypeFormat.External:
ndefRecord = NdefRecord.CreateExternal(record.ExternalDomain, record.ExternalType, record.Payload);
break;
case NFCNdefTypeFormat.Empty:
ndefRecord = GetEmptyNdefRecord();
break;
case NFCNdefTypeFormat.Unknown:
case NFCNdefTypeFormat.Unchanged:
case NFCNdefTypeFormat.Reserved:
default:
break;
}
return(ndefRecord);
}
public NdefRecord CreateMimeRecord(String mimeType, byte[] payload)
{
try
{
byte[] mimeBytes = Encoding.UTF8.GetBytes(mimeType);
NdefRecord mimeRecord = new NdefRecord(
NdefRecord.TnfMimeMedia, mimeBytes, new byte[0], payload);
return(mimeRecord);
}
catch (Exception exc)
{
Helpers.LoggerHelper.LogException(exc);
return(null);
}
}
public static NfcTagRecord ToNfcTagRecord(NdefRecord ndefRecord)
{
if (ndefRecord is NfcUriRecord)
{
var nfcUriRecord = ndefRecord as NfcUriRecord;
if (nfcUriRecord.UriPrefix == NfcUriRecord.Prefix.http ||
nfcUriRecord.UriPrefix == NfcUriRecord.Prefix.https ||
nfcUriRecord.UriPrefix == NfcUriRecord.Prefix.httpswww ||
nfcUriRecord.UriPrefix == NfcUriRecord.Prefix.httpwww)
{
return NfcTagRecord.FromUrl(nfcUriRecord.ToString());
}
}
return null;
}
public UriRecord Parse(NdefRecord record)
{
var tnf = record.Tnf;
if (tnf == NdefRecord.TnfWellKnown)
{
return(ParseWellKnown(record));
}
else if (tnf == NdefRecord.TnfAbsoluteUri)
{
return(ParseAbsolute(record));
}
else
{
throw new Exception("Unknown tnf");
}
}
public static String ProcessNFCRecord(NdefRecord record)
{
//Define the tag content we want to return.
String tagContent = null;
//Make sure we have a record.
if (record != null)
{
//Check if the record is a URL.
if (record.CheckSpecializedType(true) == typeof(NdefUriRecord))
{
//The content is a URL.
tagContent = new NdefUriRecord(record).Uri;
}
else if (record.CheckSpecializedType(true) == typeof(NdefMailtoRecord))
{
//The content is a mailto record.
tagContent = new NdefMailtoRecord(record).Uri;
}
else if (record.CheckSpecializedType(true) == typeof(NdefTelRecord))
{
//The content is a tel record.
tagContent = new NdefTelRecord(record).Uri;
}
else if (record.CheckSpecializedType(true) == typeof(NdefSmsRecord))
{
//The content is a sms record.
tagContent = new NdefSmsRecord(record).Uri;
}
else if (record.CheckSpecializedType(true) == typeof(NdefTextRecord))
{
//The content is a text record.
tagContent = new NdefTextRecord(record).Text;
}
else
{
//Try and force a pure text conversion.
tagContent = Encoding.UTF8.GetString(record.Payload);
}
}
//Return the tag content.
return(tagContent);
}
/// <summary>
/// Transforms a <see cref="NFCNdefRecord"/> into an Android <see cref="NdefRecord"/>
/// </summary>
/// <param name="record">Object <see cref="NFCNdefRecord"/></param>
/// <returns>Android <see cref="NdefRecord"/></returns>
NdefRecord GetAndroidNdefRecord(NFCNdefRecord record)
{
if (record == null)
{
return(null);
}
NdefRecord ndefRecord = null;
switch (record.TypeFormat)
{
case NFCNdefTypeFormat.WellKnown:
var languageCode = record.LanguageCode;
if (string.IsNullOrWhiteSpace(languageCode))
{
languageCode = Configuration.DefaultLanguageCode;
}
ndefRecord = NdefRecord.CreateTextRecord(languageCode.Substring(0, 2), Encoding.UTF8.GetString(record.Payload));
break;
case NFCNdefTypeFormat.Mime:
ndefRecord = NdefRecord.CreateMime(record.MimeType, record.Payload);
break;
case NFCNdefTypeFormat.Uri:
ndefRecord = NdefRecord.CreateUri(Encoding.UTF8.GetString(record.Payload));
break;
case NFCNdefTypeFormat.External:
ndefRecord = NdefRecord.CreateExternal(record.ExternalDomain, record.ExternalType, record.Payload);
break;
case NFCNdefTypeFormat.Empty:
ndefRecord = GetEmptyNdefRecord();
break;
case NFCNdefTypeFormat.Unknown:
case NFCNdefTypeFormat.Unchanged:
case NFCNdefTypeFormat.Reserved:
default:
break;
}
return(ndefRecord);
}
/*
* Method name: CreateCardContent
* Purpose: To be able to create the content for the card in the correct form of ShareMyDay:CardType:CardMessage
*/
public static NdefMessage CreateCardContent()
{
switch (_typeSelected)
{
case "Leisure Activity":
_typeSelected = "1";
break;
case "Class Activity":
_typeSelected = "2";
break;
case "Class":
_typeSelected = "3";
break;
case "Item":
_typeSelected = "4";
break;
case "Teacher":
_typeSelected = "5";
break;
case "Friend":
_typeSelected = "6";
break;
case "Visitor":
_typeSelected = "7";
break;
case "Admin":
_typeSelected = "8";
break;
}
var messageBytes = Encoding.UTF8.GetBytes(_typeSelected + ":" + _inputMessage);
var mimeBytes = Encoding.UTF8.GetBytes("ShareMyDayTest");
var ndefRecord = new NdefRecord(NdefRecord.TnfMimeMedia, mimeBytes, new byte[0], messageBytes);
var ndefMessage = new NdefMessage(new[] { ndefRecord });
return(ndefMessage);
}
protected override void OnNewIntent(Intent intent) //When a new NFC tag is discovered
{
try
{
var tag = intent.GetParcelableExtra(NfcAdapter.ExtraTag) as Tag;
IParcelable[] rawMsgs = intent.GetParcelableArrayExtra(NfcAdapter.ExtraNdefMessages);
if (rawMsgs != null)
{
NdefMessage message = (NdefMessage)rawMsgs[0];
NdefRecord[] records = message.GetRecords();
if (records != null)
{
if (MainPage.currentPage == "Read From Node") //If current page is read page
{
ReadNFC.DisplayValues(records[0].GetPayload()); //Encrypt nonce and create reply
}
else //If current page is write page
{
Ndef ndef = Ndef.Get(tag);
ndef.Connect();
byte[] bytes = WriteNFC.CreateRequest();
NdefRecord newRecord = new NdefRecord(NdefRecord.TnfUnknown, new byte[0], new byte[0], bytes);
NdefMessage newMessage = new NdefMessage(new NdefRecord[] { newRecord });
ndef.WriteNdefMessage(newMessage);
ndef.Close();
Toast.MakeText(ApplicationContext, "Write Succesful", ToastLength.Long).Show();
}
}
}
else
{
Toast.MakeText(ApplicationContext, "The Tag did not contain a message.", ToastLength.Long).Show();
}
}
catch
{
Toast.MakeText(ApplicationContext, "Something went wrong, please try again.", ToastLength.Long).Show();
}
}
private void PublishRecord(NdefRecord record, bool writeToTag)
{
if (_device == null)
{
return;
}
// Make sure we're not already publishing another message
StopPublishingMessage(false);
// Wrap the NDEF record into an NDEF message
var message = new NdefMessage {
record
};
// Convert the NDEF message to a byte array
var msgArray = message.ToByteArray();
// Publish the NDEF message to a tag or to another device, depending on the writeToTag parameter
// Save the publication ID so that we can cancel publication later
_publishingMessageId = _device.PublishBinaryMessage((writeToTag ? "NDEF:WriteTag" : "NDEF"), msgArray.AsBuffer(), MessageWrittenHandler);
}
/// <summary>
/// Below a code snippet for writing to a discovered tag. This method can be called when a new intent (tag discovered) has been fired.
/// I'm using the Ndef class to the actual writing of the data to the tag.
/// The first step is to create the different parts payload, record, and the Ndef message which will be written on the tag.
/// Don't forget to call the Connect method before writing to the tag, otherwise, an exception will be thrown.
/// </summary>
/// <param name="intent">Current intent</param>
/// <param name="content">Your Message</param>
public void WriteToTag(Intent intent, string content)
{
if (!(intent.GetParcelableExtra(NfcAdapter.ExtraTag) is Tag tag))
{
return;
}
Ndef ndef = Ndef.Get(tag);
if (ndef == null || !ndef.IsWritable)
{
return;
}
var payload = Encoding.ASCII.GetBytes(content);
var mimeBytes = Encoding.ASCII.GetBytes("text/plain");
var record = new NdefRecord(NdefRecord.TnfWellKnown, mimeBytes, new byte[0], payload);
var ndefMessage = new NdefMessage(new[] { record });
ndef.Connect();
ndef.WriteNdefMessage(ndefMessage);
ndef.Close();
}
//NFC EVENTS
public NdefMessage CreateNdefMessage(NfcEvent evt)
{
if (myName == null)
{
Identity.LoadUsername(GetExternalFilesDir(null).ToString());
myName = Identity.Username;
}
string datagram = myName + ",";
foreach (string e in keys)
{
datagram += e + "#";
}
NdefRecord mimeRec = new NdefRecord(
NdefRecord.TnfMimeMedia, Encoding.UTF8.GetBytes(Mime),
new byte[0], Encoding.UTF8.GetBytes(datagram));
NdefMessage msg = new NdefMessage(new NdefRecord[] { mimeRec });
return(msg);
}
public NFCMessage NdefFormatable_FormatTag(Tag tag)
{
if (!tag.GetTechList().Contains(Tech_NdefFormatable))
{
return(NFCMessage.NFC_UN_FORMATABLE_TAG);
}
NdefFormatable ndefFormatable = NdefFormatable.Get(tag);
if (ndefFormatable == null)
{
return(NFCMessage.NFC_CANT_FORMAT);
}
ndefFormatable.Connect();
NdefRecord record = NdefRecord.CreateMime("text/plain", Encoding.ASCII.GetBytes("New"));
NdefMessage message = new NdefMessage(new NdefRecord[] { record });
ndefFormatable.Format(message);
ndefFormatable.Close();
OnFormatting_NdefTag?.Invoke();
return(NFCMessage.NFC_TAG_FORMATED);
}
private void ReadNfcTag(Intent intent)
{
// Find first NDEF message
var parcellableNdefMessages = intent.GetParcelableArrayExtra(NfcAdapter.ExtraNdefMessages);
NdefMessage ndefMessage = null;
if (parcellableNdefMessages != null && parcellableNdefMessages.Length > 0)
{
ndefMessage = parcellableNdefMessages[0] as NdefMessage;
LogMessage("NDEF formatted NFC Tag discovered.");
}
else
{
LogMessage("Error: Tag is not NDEF formatted. This is unexpected.");
return;
}
// Find first record in NDEF message
NdefRecord ndefRecord = null;
var ndefRecords = ndefMessage.GetRecords();
if (ndefRecords != null && ndefRecords.Length > 0)
{
LogMessage("Using first NDEF record.");
ndefRecord = ndefRecords[0];
}
else
{
LogMessage("Error: No records found in NDEF Message.");
return;
}
// Log Uri to output
LogMessage(String.Format("TAG Uri: {0}\n", ndefRecord.ToUri()));
//var openUriIntent = new Intent(Android.Content.Intent.ActionView, ndefRecord.ToUri());
//StartActivity(openUriIntent);
}
/**
*
* Método faz a gravação de uma nova mensagem no cartão.
*
* Essa nova mensagem será códificada usando o padrão UTF-8.
*
* @param ndef = Contém as informações do cartão que esta sendo lido.
* @param mensagem = Mensagem que será gravada no cartão
*
* @throws IOException
* @throws FormatException
*
* @return boolean => True = Mensagem Gravada / False = Erro ao gravar mensagem
*
* */
public bool GavarMensagemCartao(Ndef ndef, string mensagem)
{
bool retorno = false;
try
{
if (ndef != null)
{
ndef.Connect();
NdefRecord mimeRecord = null;
Java.Lang.String str = new Java.Lang.String(mensagem);
mimeRecord = NdefRecord.CreateMime
("UTF-8", str.GetBytes(Charset.ForName("UTF-8")));
ndef.WriteNdefMessage(new NdefMessage(mimeRecord));
ndef.Close();
retorno = true;
}
else
{
retorno = FormataCartao(ndef);
}
}
catch (System.FormatException e)
{
throw new System.FormatException(e.Message);
}
catch (IOException e)
{
throw new IOException(e.Message);
}
finally
{
this.GravaTempoFinal();
}
return(retorno);
}
/// <summary>
/// Create a Smart Uri record based on the record passed
/// through the argument.
/// </summary>
/// <remarks>
/// Internalizes and parses the payload of the original record.
/// The original record can be a Smart Poster or a URI record.
/// </remarks>
/// <param name="other">Record to copy into this SmartUri record.</param>
public NdefSmartUriRecord(NdefRecord other) : base(other)
{
// Type compatibility checks done in base class
}