public void ReadValues(NFCNdefMessage message, NSError error)
{
try
{
if (MainPage.currentPage == "Read From Node") //If current page is read page
{
NFCNdefPayload messageRecord = message.Records[0];
ReadNFC.DisplayValues(messageRecord.Payload.ToArray()); //Encrypt nonce and create reply
Session.InvalidateSession();
}
else // If current page is write page
{
string test = "sjkdsakdjdksad";
//byte[] bytes = Encoding.ASCII.GetBytes(test);
byte[] bytes = WriteNFC.CreateRequest();
NFCNdefPayload writePayload = new NFCNdefPayload(NFCTypeNameFormat.Unknown, NSData.FromArray(new byte[0]), NSData.FromArray(new byte[0]), NSData.FromArray(bytes));
NFCNdefMessage writeMessage = new NFCNdefMessage(new NFCNdefPayload[] { writePayload });
tag.WriteNdef(writeMessage, delegate { Console.WriteLine("Write"); });
System.Threading.Thread.Sleep(300);
Session.InvalidateSession();
}
}
catch
{
Console.WriteLine("Did not contain a message");
}
}
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();
}
}