addAid static method

Future<void> addAid(
  1. String aid
)

Adds an AID to the FlutterPos plugin.

This function returns a Future<void>, which completes when the AID has been added successfully or when an error occurs.

If the AID cannot be added, the function throws a FlutterPosException.

Parameters:

  • aid (required): The AID to be added.

Example:

await FlutterNewposSdk.addAid('A000000003');

Throws:

  • FlutterPosException with the code ADD_AID_TIMEOUT if the AID cannot be added within the timeout period.
  • FlutterPosException with the code ADD_AID_FAILURE if an unknown error occurs while adding the AID.
  • FlutterPosException with the code ADD_AID_FAILURE if the AID is already added.

Implementation

static Future<void> addAid(String aid) async {
  /// Stream method
  final stream = FlutterNewposSdk._methodStream.stream
      .where((m) => m.method == 'OnAddAidSuccess')
      .map((m) {
    return m.arguments as bool;
  });
  try {
    final methodResult = await _invokeMethod(
      'addAid',
      aid,
    );

    final result = methodResult as bool;

    if (!result) {
      throw const FlutterPosException(
        code: 'ADD_AID_FAILURE',
        message: 'Exception adding AID',
      );
    }
    final streamOutput = await getFirstResultInStream(
      stream,
      const Duration(seconds: 2),
    );
    if (streamOutput == false) {
      throw const FlutterPosException(
        code: 'ADD_AID_FAILURE',
        message: 'Exception adding AID',
      );
    }
  } on TimeoutException {
    throw const FlutterPosException(
      code: 'ADD_AID_TIMEOUT',
      message: 'Timeout adding AID',
    );
  } catch (e) {
    throw const FlutterPosException(
      code: 'ADD_AID_FAILURE',
      message: 'Exception adding AID',
    );
  }
}