NdefMessage class

An immutable NDEF message: an ordered list of records.

toBytes and fromBytes implement the NFC Forum wire format in Dart, so a message can be built or parsed without a tag in range. That matters in three places: host card emulation, where this side of the exchange has to produce the bytes itself; Android intents, which hand over already-serialized messages; and tests, which can then cover the codec without a device.

Constructors

NdefMessage(List<NdefRecord> records)

Constructs a message from records.

const

NdefMessage.fromBytes(Uint8List bytes)

Decodes a message from the NFC Forum wire format.

factory

Properties

byteLength → int

The number of bytes this message occupies when stored on a tag.

no setter

hashCode → int

The hash code for this object.

no setter, override

records → List<NdefRecord>

The records, in order.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toBytes() → Uint8List

Encodes this message in the NFC Forum wire format.

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

override