Android Question NFC binary data

[Nickelgrass]

Hello,
I am trying to read a NFC card.

So far I figured out that I need this permission:

' NFC Permission
AddActivityText(activity, <intent-filter>
    <action android:name="android.nfc.action.TAG_DISCOVERED"/>
    <category android:name="android.intent.category.DEFAULT"/>
</intent-filter>)

But I did not figure out how to get the binary data. The NFC and NFCforeground Libraries did not supply any data in the result.

Dim List_NdefRecords As List
        List_NdefRecords = nf.GetNdefRecords(Activity.GetStartingIntent)
          Log (List_NdefRecords)

It just gives an empty array. How can I get non ndef data?

Thanks!

Regards!

 

[Erel]

Are you reading a NDEF tag? Otherwise it will not work with the NFC library.

 

[Nickelgrass]

No, I think its just binary data. I dont get an ndef event from the intent filter in the manifest if its set to ndef. How can I read the binary data?

 

[Erel]

NFC library only works with NDEF tags.

 

[Nickelgrass]

Is there no way to read binary data? Perhaps with a java library?

 

[Erel]

You can use base 64 encoding to store binary data.

 

[Nickelgrass]

Reading binary data was in referance to NFC. Is there a way to read NFC binary data with Java? There are apps who can read all types of cards so I guess the hardware suports it.

 

[Erel]

You can see the Java API here: https://developer.android.com/guide/topics/connectivity/nfc/index.html
It does support other protocols.

Note that there is additional library that you should check: https://www.b4x.com/android/forum/threads/mifare-ultralight-nfc-library.43212/#content