method invokeCallback

Source

@protected
dynamic/*=T*/ invokeCallback/*<T>*/(String name, RecognizerCallback<dynamic/*=T*/> callback) {
  dynamic/*=T*/ result;
  try {
    result = callback();
  } catch (exception, stack) {
    FlutterError.reportError(new FlutterErrorDetails(
      exception: exception,
      stack: stack,
      library: 'gesture',
      context: 'while handling a gesture',
      informationCollector: (StringBuffer information) {
        information.writeln('Handler: $name');
        information.writeln('Recognizer:');
        information.writeln('  $this');
      }
    ));
  }
  return result;
}