appidea
Unable to Send NDEF message from android 10 to android 12
Hello, first of all, thank you very much for a great job with this react native library.
I am experiencing the following issue:
I am able to use the HCE library on both android 10 and 12, which are the devices I am testing with.
Both are able to send the HCE message, however android 12 is unable to read the message from android 10.
For example, I can send an NDEF message from android 10 to another android 10 device as a reader.
However, if a try to send the NDEF message from android 10 to a Samsung S22+ with android 12, the reader is unable to receive the NDEF messages, there are no errors on any of the two sides. There is just a small bubble on the HCE side (android 10) which states that there are no apps available to receive the tag.
As a side note I am using this library as a reader:
https://github.com/revtel/react-native-nfc-manager
Also, I tested sending the HCE NDEF message with another google play store library and the message is properly sent from android 10 to 12 with this one:
https://play.google.com/store/apps/details?id=com.maxsoft.ndeftagemulator&hl=en&gl=US
Just wanted to know I anyone has experienced something similar or has any clue of what could be happening. Thanks in advance!
It seems that the Type 4 spec is less than clear on the max Ndef size and this might be causing a problem (a theory)
I have no way to test this but this and other HCE libraries are using FFFE as the max size when it should be 80FE see https://stackoverflow.com/questions/75932985/why-does-data-transfer-over-nfc-with-hce-only-work-with-android-lower-12 for more details
@Zardozz Many thanks! It could be the most wanted answer for this question of random behaviour... I will definitely play around with limiting the size of CC and if it will help with compatibility, I will apply the appropriate changes to the next release.
As per the stackoverflow question, it seems some success on reducing the CC size to 7FFF has some success as this is a more logical max size of 32K to match physical Tags.
I'm also looking an update on this, since I'm able to emulate but not able to read the content on another android device scanning using react-native-nfc-manager.
