TapLinx SDK, TagWriter and TagInfo中的主题 Android SDK Incomplete response Exception

Android SDK Incomplete response Exception

melaghil — Sun, 18 May 2025 10:11:07 GMT

Hello team ,
We are encountering the following exception frequently when using #AndroidSDK with #DESFire EV3 8k card

com.nxp.nfclib.exceptions.InvalidResponseLengthException: Incomplete response
at com.nxp.nfclib.desfire.DESFireEV1.readRecords(:2827)
at com.nxp.nfclib.desfire.DESFireEV2.readRecords(:2026)

We would appreciate your assistance with the following:

What are the possible causes or scenarios that could trigger this InvalidResponseLengthException?
How can we properly handle this exception in our application without requiring the card to be formatted?

Thank you for your support.

Re: Android SDK Incomplete response Exception

KaiLi — Mon, 19 May 2025 09:36:58 GMT

Hello @melaghil

1. What are the possible causes or scenarios that could trigger this InvalidResponseLengthException?

What did you do to trigger such an exception?

2. How can we properly handle this exception in our application without requiring the card to be formatted?

Generally, the standard process for accessing an EV3 card is as follows: Get and Select the existing application ID(AID) and file ID (FID), then authenticate. After successful authentication, you can read and write the data in the file.

Re: Android SDK Incomplete response Exception

melaghil — Mon, 19 May 2025 10:36:28 GMT

Hello @KaiLi

1. What did you do to trigger such an exception?

Trying to read card records

2. Generally, the standard process for accessing an EV3 card is as follows: Get and Select the existing application ID(AID) and file ID (FID), then authenticate. After successful authentication, you can read and write the data in the file.

but now i got this exception after successful authentication

Re: Android SDK Incomplete response Exception

KaiLi — Tue, 20 May 2025 01:25:51 GMT

Hello @melaghil

Could you share your code with us? Let us check if there is something happens.