Client API. The Codename One framework your app is built on: this runs on the device, not in a backend.

public enum TagType

  1. Object
  2. Enum<TagType>
  3. TagType

ImplementsComparable<TagType>

Tag technologies that a discovered Tag may support. A single tag typically reports several entries – e.g. a MIFARE Classic 1K tag returns [NFC_A, MIFARE_CLASSIC, NDEF] – so callers use Tag.supports(TagType) to decide which API to call.

Not every platform exposes every technology:

  • Android – exposes the full set via android.nfc.tech.*.
  • iOS – Core NFC exposes only NDEF, ISO_DEP (ISO 14443-4 / ISO 7816), NFC_F (FeliCa), and MIFARE_ULTRALIGHT (as a subset of NFCMiFareTag). MIFARE Classic is intentionally not supported by Apple and reports as NFC_A only.
  • JavaSE simulator – all values are emulated; the Simulate -> NFC menu lets you set the tech list per virtual tag.

Enum constants

NDEFTag carries an NDEF message that can be read by Tag.readNdef() and (if writable) updated by Tag.writeNdef(NdefMessage).
ISO_DEPISO 14443-4 / ISO 7816-4 – contact-less smart cards, EMV payment cards, ePassports, government ID.
MIFARE_CLASSICNXP MIFARE Classic 1K/4K.
MIFARE_ULTRALIGHTNXP MIFARE Ultralight / Ultralight C / NTAG (NTAG213/215/216).
NFC_ANFC Forum Type 2 (low-level NFC-A / ISO 14443-3A).
NFC_BNFC Forum Type 4B (ISO 14443-3B).
NFC_FFeliCa (JIS X 6319-4) – Japanese transit / payment cards.
NFC_VISO 15693 – vicinity cards used in libraries, ski-lift passes, blood bags.

Methods

public static TagType[] values()
public static TagType valueOf(String name)

Inherited methods

From Enum

clone, setEnumValues, getEnumValues, valueOf, equals, hashCode, toString, compareTo, name, ordinal, getDeclaringClass

From Object

getClass, notify, notifyAll, wait, wait, wait, finalize

Enum constant details

NDEF

NDEF
Tag carries an NDEF message that can be read by Tag.readNdef() and (if writable) updated by Tag.writeNdef(NdefMessage). The vast majority of consumer-facing NFC tags include this technology.

ISO_DEP

ISO_DEP
ISO 14443-4 / ISO 7816-4 – contact-less smart cards, EMV payment cards, ePassports, government ID. Use [IsoDep#transceive(byte[])] to send APDUs. Available on Android via IsoDep and on iOS via NFCTagReaderSession with NFCISO7816Tag.

MIFARE_CLASSIC

MIFARE_CLASSIC
NXP MIFARE Classic 1K/4K. Block-level read/write with key A/B authentication via MifareClassic. Android-only – iOS intentionally does not expose this technology.

MIFARE_ULTRALIGHT

MIFARE_ULTRALIGHT
NXP MIFARE Ultralight / Ultralight C / NTAG (NTAG213/215/216). Page-level read/write via MifareUltralight. Supported on both Android (MifareUltralight) and iOS (NFCMiFareTag).

NFC_A

NFC_A
NFC Forum Type 2 (low-level NFC-A / ISO 14443-3A). Use NfcA for raw transceive.

NFC_B

NFC_B
NFC Forum Type 4B (ISO 14443-3B). Android-only.

NFC_F

NFC_F
FeliCa (JIS X 6319-4) – Japanese transit / payment cards. Use NfcF for raw transceive. Supported on Android and on iOS 13+ via NFCFeliCaTag. App must declare its system codes in the iOS plist com.apple.developer.nfc.readersession.felica.systemcodes.

NFC_V

NFC_V
ISO 15693 – vicinity cards used in libraries, ski-lift passes, blood bags. Android-only.

Method details

values

public static TagType[] values()

valueOf

public static TagType valueOf(String name)