NdefRecord constructor

NdefRecord({ required TypeNameFormat typeNameFormat, required Uint8List type, required Uint8List identifier, required Uint8List payload, })

Constructs an NDEF record from its fields.

Throws FormatException if a valid record cannot be created.

Implementation

factory NdefRecord({
  required TypeNameFormat typeNameFormat,
  required Uint8List type,
  required Uint8List identifier,
  required Uint8List payload,
}) {
  switch (typeNameFormat) {
    case TypeNameFormat.empty:
      if (type.isNotEmpty || identifier.isNotEmpty || payload.isNotEmpty) {
        throw FormatException('Unexpected data in EMPTY record.');
      }
    case TypeNameFormat.unknown:
      if (type.isNotEmpty) {
        throw FormatException('Unexpected type field in UNKNOWN record.');
      }
    case TypeNameFormat.unchanged:
      throw FormatException(
        'Unexpected UNCHANGED record in first chunk or logical record.',
      );
    default:
      break;
  }
  return NdefRecord._(
    typeNameFormat: typeNameFormat,
    type: type,
    identifier: identifier,
    payload: payload,
  );
}