CODEWITHSUNDEEP
androidiosflutterdartnfc
Florian Buchfink
Florian Buchfink

Reputation: 127

How i get by NFC-Scanning with Flutter/Android the same Uid like when i scanning with iOS?

When i scan with my iOS app a NFC-Tag i get this result:

04ea1b72835c80

i think this is the Uid.

Now i program with Flutter and the NFC-Manager package a NFC-Reader for Android. Now when i scan the same NFC Tag i get this Information:

{nfca: {identifier: [4, 234, 27, 114, 131, 92, 128], atqa: [68, 0], maxTransceiveLength: 253, sak: 0, timeout: 618}, mifareultralight: {identifier: [4, 234, 27, 114, 131, 92, 128], maxTransceiveLength: 253, timeout: 618, type: 2}, ndef: {identifier: [4, 234, 27, 114, 131, 92, 128], isWritable: true, maxSize: 492, canMakeReadOnly: true, cachedMessage: null, type: org.nfcforum.ndef.type2}}

i use this code in flutter:

  void _tagRead() {
    NfcManager.instance.startSession(onDiscovered: (NfcTag tag) async {
      var mytag = tag.data;
      result.value = tag.data ;
      NfcManager.instance.stopSession();
   });
  }

i tried to parse the identifier in different ways but i didn´t get the same result how from iOS.

Anyone know the right way?

Upvotes: 1

Views: 2367

Answers (1)

Florian Buchfink
Florian Buchfink

Reputation: 127

This

  void _tagRead() {
    NfcManager.instance.startSession(onDiscovered: (NfcTag tag) async {
    var mytag = tag.data;
    result.value = tag.data ;
    NfcManager.instance.stopSession();
  });
 }

change to

  void _tagRead() {
    NfcManager.instance.startSession(onDiscovered: (NfcTag tag) async {
    var mytag = tag.data["mifareultralight"]["identifier"].map((e) => e.toRadixString(16).padLeft(2, '0')).join(''); ;

    result.value = mytag ;
 
    NfcManager.instance.stopSession();
  });
}

and i got 04ea1b72835c80

Upvotes: 2

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