Пример #1
0
        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");
            }
        }
Пример #2
0
        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();
            }
        }