onNotification static method

Future<String?> onNotification(
  1. dynamic callback(
    1. String
    )
)

Set callback to receive push notifications @param { callback listner } callback returns the error message or an empty string if there is no error

Implementation

static Future<String?> onNotification(Function(String) callback) async {
  if (BUILDING_WITH_PUSH_DISABLED) {
    log('onNotification, $_pushDisabledMsg', logLevel: LogLevel.ERROR);
    return _pushDisabledMsg;
  }
  log('Calling "onNotification"');
  await _channel.invokeMethod('registerForNotification').then((value) {
    callback(value.toString());
    onNotification(callback);
  }).catchError((error) {
    callback(error.toString());
  });
  return '';
}