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[Diego Palomar]

Hi Mike. I haven't solved the problem yet :$ I'm using TapLinx SDK 1.1

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[Diego Palomar]

Hi TapLinx Support,

Thanks for your reply. Finally I was able to fix my problem reseting the app default key with this code:

EV2PICCConfigurationSettings settings = new EV2PICCConfigurationSettings();

settings.setAppDefaultKey(SampleAppKeys.KEY_AES128_ZEROS, (byte) 0x1);

desFireEV2.setConfigurationByte(settings);

Regards,
Diego

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[Diego Palomar]

The application should not crash when NFC is disable. Of course I can wrap any call to the SDK into try/catch blocks but the SDK doesn't provide any documentation about all the possible Exceptions that could be thrown when calling either registerActivity or startForeGroundDispatch (unless you decompile the SDK and check what the exceptions are :$)

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[Diego Palomar]

That's exactly what I'm doing, didn't I? The problem here is that even before I try to create the file the authentication at the application level fails. As you can see what I'm doing first is to authenticate at the PICC level then I create the new application then I select the new application and then I try to authenticate at the application level but that authentication fails (as you can see I'm using the default application key). Before I create the new file I want to change the application password but the default authentication fails. I would appreciate any help to solve the application authentication problem. Thanks!

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[Diego Palomar]

Hi, thanks for your reply. What startForeGroundDispatch does internally is to call the NfcAdapter#enableForegroundDispatch method which according to the Android documentation must to be called from onResume ("...enableForegroundDispatch() must be called from the main thread and only when the activity is in the foreground (calling in onResume() guarantees this)") https://developer.android.com/guide/topics/connectivity/nfc/advanced-nfc.html#foreground-dispatch

On the other hand the sample application that you provide (https://www.mifare.net/wp-content/uploads/2016/08/SrcsampleNxpNfcLib-1.0.zip) calls startForeGroundDispatch from onResume. Where should I call startForeGroundDispatch method from?

Cheers.

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