setReaderChangedCallback method

  1. @override
ReaderCallbackReference setReaderChangedCallback(
  1. FutureOr<void> callback(
    1. ReaderChangedEvent event
    )
)
override

Implementation

@override
ReaderCallbackReference setReaderChangedCallback(
    FutureOr<void> Function(ReaderChangedEvent event) callback) {
  String refId = _generateUniqueId();
  _startReaderCallbackIntent();
  _readerCallbacks.putIfAbsent(refId, () => callback);
  return ReaderCallbackReference(
      refId, () => removeReaderChangedCallback(refId));
}