ndef library

NDEF values and the NFC Forum wire codec.

The value types here are pure Dart and need no tag: NdefMessage.toBytes and NdefMessage.fromBytes implement the wire format directly, so a message can be built for host card emulation or parsed out of an Android intent without a session.

The typed record views both build and parse:

final message = NdefMessage([
  TextRecord.create('merhaba', languageCode: 'tr'),
  UriRecord.create(Uri.parse('https://example.com')),
]);

for (final record in message.records) {
  final text = TextRecord.from(record);
  if (text != null) print('${text.languageCode}: ${text.text}');
}

Classes

ExternalRecord

A record holding application-specific data, namespaced by a domain.

MimeRecord

A record holding media data typed by a MIME type, as defined by RFC 2046.

Ndef

NDEF operations on a discovered tag, on either platform.

NdefMessage

An immutable NDEF message: an ordered list of records.

NdefRecord

One immutable NDEF record.

SmartPosterRecord

A smart poster: a URI with a human-readable title and an optional action, all packed into one record whose payload is itself an NDEF message.

TextRecord

A record holding UTF-8 or UTF-16 text, with the language it is written in.

UriRecord

A record holding a URI, stored with its common prefix abbreviated to a single byte.

Enums

NdefTypeNameFormat

The NDEF Type-Name-Format, as defined by the NFC Forum NDEF specification.

SmartPosterAction

What a reader should do with a smart poster.