public static NDEFRecordShort CreateNewForWrite(RecordType recordType, String type, String payload)
{
NDEFRecordShort record = new NDEFRecordShort();
byte[] bytesType = Encoding.ASCII.GetBytes(type);
byte[] bytesPayload = Encoding.ASCII.GetBytes(payload);
// Record Daten initialisieren
record.Data = new byte[3 + bytesType.Length + bytesPayload.Length]; // 3 Bytes Versatz vom Header + Längenangaben
// Header setzen
record.Data[0] = (byte)(HeaderMask.MessageBegin | HeaderMask.MessageEnd | HeaderMask.ShortRecord);
record.Data[0] |= (byte)recordType;
// Type Länge
record.Data[1] = (byte)bytesType.Length;
// Payload Länge
record.Data[2] = (byte)bytesPayload.Length;
for (int i = 0; i < bytesType.Length; i++)
{
record.Data[i + 3] = bytesType[i]; // 3 Bytes Versatz vom Header + Längenangaben
}
for (int i = 0; i < bytesPayload.Length; i++)
{
record.Data[i + 3 + bytesType.Length] = bytesPayload[i]; // 3 Bytes Versatz vom Header + Längenangaben zusätzlich der Offset der durch den Type entsteht
}
return(record);
}
public void StartPublishing(NDEFRecordShort record, MessageTransmittedHandler handler)
{
this.record = record;
this.transmitHandler = handler;
this.device.DeviceArrived += Device_DeviceArrived;
PublishingMode = true;
}
public void SubscribeForMessages()
{
this.subscriptionID = this.device.SubscribeForMessage("NDEF", (sender, message) => {
byte[] rawMessage = message.Data.ToArray();
NDEFRecordShort record = new NDEFRecordShort();
record.Data = rawMessage;
lastMessage = record.Payload;
});
}
private void messageReceivedHandler(ProximityDevice sender, ProximityMessage message)
{
byte[] rawMessage = message.Data.ToArray();
NDEFRecordShort record = new NDEFRecordShort();
record.Data = rawMessage;
if (this.ndefMessageHandler != null)
{
this.ndefMessageHandler(record);
}
}
private void PublishRecordToTag(NDEFRecordShort record, MessageTransmittedHandler handler)
{
if (record == null ||
record.Data == null)
{
return;
}
IBuffer buffer = record.Data.AsBuffer();
device.PublishBinaryMessage("NDEF:WriteTag", buffer, (sender, msgID) => {
if (handler != null)
{
handler(sender, msgID);
}
device.StopPublishingMessage(msgID);
});
}
