onError method

@override Future onError(DioError err, ErrorInterceptorHandler handler)

The callback will be executed on error.

If you want to continue the error , call handler.next.

If you want to complete the response with some custom data directly, you can resolve a Response object with handler.resolve and other error interceptor(s) will be skipped.

If you want to complete the response with an error message directly, you can reject a DioError object with handler.reject, and other error interceptor(s) will be skipped.

Implementation

@override
Future onError(DioError err, ErrorInterceptorHandler handler) async {
  var _networkLog = _NetworkLog("onResponse");
  if (error) {
    _networkLog.printTopLine();
    _networkLog.printLog('*** DioError ***:');
    _networkLog.printLog('uri: ${err.requestOptions.uri}');
    _networkLog.printLog('$err');
    if (err.response != null) {
      _printResponse(err.response!, _networkLog);
    }
    _networkLog.printBottomLine();
  }
  handler.next(err);
}