hce

I would like to pass a string to an Activity easily. Something like callback would be needed because when the string has to be passed then the Activity has to do something. public class MyHostApduService extends HostApduService { @Override public byte[] processCommandApdu(byte[] apdu, Bundle extras) { if (selectAidApdu(apdu)) { Log.i("HCEDEMO", "Application selected"); return getWelcomeMessage(); } else { if (exchangeDataApdu(apdu)) { Log.i("HCEDEMO", "Data exchanged"); // int _len_ = apdu[4]; String _data_ = new String(apdu).substring(5, apdu.length - 1); // TODO: Send _data_ to an activity..

I am trying to send some data to the Nexus 4 through NFC (i.e. the card emulation mode). I tried a number of the command APDUs such as writing and updating APDUs, but I couldn't get them to work. What I am trying to say is, I want to send some data (that is not the AID) to the phone after the select APDU command. Thanks in advance, Bader The HCE emulated card will understand exactly those commands that your HCE app's APDU service processes. So, for instance, if your HCE service's processCommandApdu() callback method looks like this: final static byte[] SW_NO_ERROR = new byte[]{ (byte)0x90,

I'm new to this field, I got a Nexus S ( CyanogenMod11 = Android Kitkat 4.4.2) And I need to use HCE (Host-Based Card Emulation) mode in order to emulate a contactless card. Any guidance on the steps and the tips I need to follow in order to accomplish this? ( - Do I need to program the simulated Secure Element? put it on cloud? ) P.S: I have to use the new Reader Mode also, because my app is going to be read by another Android NfC-enabled phone and not by an NFC reader. Thank you. Michael Roland Before CyanogenMod 11, CyanogenMod supported its own host-based card emulation functionality. You

When I put SIII (Android 4.3) on ACR122U NFC reader the LED keeps blinking green. When I put Samsung S4 (Android 4.3) LED turns green till the time phone is on the reader. In both the cases NFC is turned on and device is in unlocked state. This behaviour translates into frequent disconnections in SIII and a stable connection on S4. Why two phones behave differently? I am aware of the fact that two phones have NFC chipsets from two different vendors namely NXP and Broadcom. My question is what is the source for such inconsistent behaviour among these devices? Another question is why does phone

I am trying to send NFC data from one Android device to another. I was able to do it successfully using the 'Touch to Beam' functionality. But I would like the data transfer to take place automatically as soon as both the devices are together. I saw this question answered in StackOverflow multiple times. Unfortunately, while some say its not possible to send NFC data from one Android device to another this way, some others suggest to try "foreground-dispatching" (which the official documents say is now deprecated). I wasn't successful with "foreground dispatching" though I am not entirely sure