Hallo, the tag object's getId() method should work just fine for most cases[1]. I.e.
byte[] uid = tagFromIntent.getId(); [1] Note that some tag platforms use random UIDs. For some others the method may return only a partial UID. Like NFC Forum Type 1 tags, where the method returns only 4 bytes of the 7 byte UID (which is correct as only those 4 bytes are used to reference the tag in the transmission protocol.) Besides getId(), this should also work (and give the same result as getId()): byte[] uid = intent.getByteArrayExtra(NfcAdapter.EXTRA_ID); br Michael On Aug 4, 11:32 am, "xiaodai...@163.com" <zsbitxiao...@163.com> wrote: > Hi, > I just started to research the NFC relevant content. > I can scan the card, but always don't read the card UID. > > I want to use getId(),but it cant'n read. > And i see some demo ,using "Tag tagFromIntent = > intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);" > But it outputs a bunch of garbage characters. > > How it should be read the card UID? > > Can anyone help me....Thank you very much! > > Regards, > Xiaoxiao -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
