Dio instance doesnt return a response when getting a API endpoint - flutter

Question

I am trying to get a response from an Api but there is no response in return.
Dio instance doesnt return a response when getting a API endpoint
import 'package:dio/dio.dart';
class DioService {
static const baseUrl = "https://dictionaryapi.dev/";
Dio dio = Dio();
DioService() {
initializeInterceptors();
}
initializeInterceptors() {
dio.interceptors.add(InterceptorsWrapper(onError: (e, _) {
print(e.message);
}, onRequest: (r, _) {
print(r.method);
print(r.path);
}, onResponse: (r, _) {
print(r.data);
}));
}
Future<Response> getRequest(String endPoint) async {
Response response;
try {
response = await dio.get(endPoint);
print(response.toString());
} on DioError catch (e) {
print(e);
throw Exception(e.message);
}
return response;
}
}
console :
I/flutter (17735): GET
I/flutter (17735): https://api.dictionaryapi.dev/api/v2/entries/en_US/dog

Answer 1

Your interceptor is routing the request into a black hole.
The second parameter to each interceptor method is a handler. In order to continue a request, the interceptor must pass (possibly modified) request options to the handler, and the same holds for the error and response handlers.
dio.interceptors.add(InterceptorsWrapper(onError: (e, handler) {
print(e.message);
handler.next(e);
}, onRequest: (r, handler) {
print(r.method);
print(r.path);
handler.next(r);
}, onResponse: (r, handler) {
print(r.data);
handler.next(r);
}));
For logging in particular, note that Dio provides a LogInterceptor class, so you don't need to roll your own.