Reply To: DESFire SAM Error

[emr]

Hi, thanks for your response.
Yes I am sure that Omnikey 6121 is properly connected , because CardManager recongnize it OK.
Here I attach the logcat error:

02-03 17:31:02.778: W/System.err(9743): java.lang.NullPointerException: SAMResponse addFrame - frame == null
02-03 17:31:02.788: W/System.err(9743): at com.nxp.nfclib.keystore.hardware.If.ˊ(:93)
02-03 17:31:02.788: W/System.err(9743): at com.nxp.nfclib.keystore.hardware.ˋ.ˊ(:2019)
02-03 17:31:02.793: W/System.err(9743): at com.nxp.nfclib.keystore.hardware.SamAV2.authenticateHost(:323)
02-03 17:31:02.793: W/System.err(9743): at com.nxp.nfclib.keystore.hardware.HardwareKeyStore.authenticateHost(:106)
02-03 17:31:02.793: W/System.err(9743): at com.example.desfire.MainActivity$7.onHardwareKeyStoreConnected(MainActivity.java:586)
02-03 17:31:02.798: W/System.err(9743): at com.nxp.nfclib.keystore.common.KeyStoreFactory$1.onSAMAv2Connected(:115)
02-03 17:31:02.798: W/System.err(9743): at com.nxp.nfclib.keystore.hardware.ˋ$If.ˊ(:1089)
02-03 17:31:02.798: W/System.err(9743): at com.nxp.nfclib.keystore.hardware.ˋ$if.onPostExecute(:3437)
02-03 17:31:02.798: W/System.err(9743): at android.os.AsyncTask.finish(AsyncTask.java:631)
02-03 17:31:02.803: W/System.err(9743): at android.os.AsyncTask.access$600(AsyncTask.java:177)
02-03 17:31:02.803: W/System.err(9743): at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:644)
02-03 17:31:02.803: W/System.err(9743): at android.os.Handler.dispatchMessage(Handler.java:99)
02-03 17:31:02.808: W/System.err(9743): at android.os.Looper.loop(Looper.java:158)
02-03 17:31:02.808: W/System.err(9743): at android.app.ActivityThread.main(ActivityThread.java:5751)
02-03 17:31:02.808: W/System.err(9743): at java.lang.reflect.Method.invokeNative(Native Method)
02-03 17:31:02.808: W/System.err(9743): at java.lang.reflect.Method.invoke(Method.java:511)
02-03 17:31:02.808: W/System.err(9743): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1083)
02-03 17:31:02.808: W/System.err(9743): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:850)
02-03 17:31:02.808: W/System.err(9743): at dalvik.system.NativeStart.main(Native Method)

I hope you can help me ,
Thanks!

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