nfc

I wrote an Android app that uses the transceive() function to communicate with an NFC-V card. My problem is that line byte[] response = nfcv.transceive(command) always throws a tag lost exception. Could someone help me? String action = intent.getAction(); Tag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG); NfcV nfcv = NfcV.get(tag); if(nfcv != null) { Toast.makeText(this, "nfcv detected", Toast.LENGTH_LONG).show(); } try { nfcv.connect(); Toast.makeText(this, "connected", Toast.LENGTH_LONG).show(); byte[] command = new byte[]{ (byte) 0x00, // Flags (byte) 0x20, // Command: Read single

I'm writing an Android application. I'm trying to send NfcA low-level commands (in my case: HALT and WAKE-UP) to my Mifare Plus S card. The NfcA tech is for "low-level" access to ISO 14443 Type A tags (i.e. the proprietary protocol as mentioned in ISO 14443-3). This is part of my code: protected void onNewIntent(Intent intent) { if (NfcAdapter.ACTION_TAG_DISCOVERED.equals(intent.getAction())) { tagFromIntent = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG); UID = Utils.byteArrayToHexString(intent.getByteArrayExtra(NfcAdapter.EXTRA_ID)); } NfcA nfca = null; try { Log.e(TAG, "WakeUpCMD and

As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 7 years ago . I need to do peer to peer connection between two nfc enabled device, i need some tutorial to do it if anyone done it send me link or explain. That sample is old and uses deprecated APIs (which are still needed though to support GB).

I want to read a card from Samsung Nexus phone but the android nfc api does not provide enough options. i've also tried using a third party api names "open nfc" but the it gives error of not supporting the api. Can anyone provide me the code to read data from a card. I have the code to read a tag but not to read a card. Here is the link to download the open nfc api. http://sourceforge.net/projects/open-nfc/files/Open%20NFC%204.3%20beta%20%2810381%29/ Any help is appreciated. This is the code i used. Its giving an error of opennfc failing... public class NFCone extends Activity implements

I created an application on Android. I am developing it on eclipse with ADT. It is about nfc. For the moment it only reads and writes tag. I run my application on my mobile device for testing and it works well. So it compiles well and runs well on my Xperia Z1 Sony, however when i unplug my phone and install the apk on it i have a problem : The install runs well but then i have two choices "Terminated" or "Open". The open is not clickable... I go to settings->Application->installed and i see my app that is install. I can force stop clear cache but not open it... I can't understand why. It runs