Class MifareUltralight

java.lang.Object

com.codename1.nfc.TagTechnology

com.codename1.nfc.MifareUltralight

public class MifareUltralight
extends TagTechnology

NXP MIFARE Ultralight / Ultralight C / NTAG21x technology view. Page-level read/write of 4-byte pages.

Supported on Android (MifareUltralight) and iOS 13+ (subset of NFCMiFareTag).

Constructor Summary

Constructors

Constructor	Description
MifareUltralight()

Method Summary

Modifier and Type	Method	Description
int	getPageCount()	Number of pages on this tag.
final TagType	getType()	The technology variant this view represents.
AsyncResource<byte[]>	readPages(int firstPage)	Reads 4 pages (16 bytes) starting at firstPage.
AsyncResource<Boolean>	writePage(int page, byte[] data)	Writes a single 4-byte page.

Methods inherited from class TagTechnology

transceive

Methods inherited from class Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

MifareUltralight

public MifareUltralight()

Method Details

getPageCount

public int getPageCount()

Number of pages on this tag. 16 for Ultralight, 48 for Ultralight C, 45 for NTAG213, 135 for NTAG215, 231 for NTAG216. Returns 0 when the port has not populated this field.

readPages

public AsyncResource<byte[]> readPages(int firstPage)

Reads 4 pages (16 bytes) starting at firstPage. Pages roll over to page 0 when the request runs past the end.

writePage

public AsyncResource<Boolean> writePage(int page,
 byte[] data)

Writes a single 4-byte page. Fails with NfcError.READ_ONLY for vendor / OTP / lock pages.

getType

public final TagType getType()

Description copied from class: TagTechnology

The technology variant this view represents.

Specified by:

getType in class TagTechnology