Flutter Global Http Interceptor

Question

I would like to know if it is possible to have a global HTTP interceptor to attach token in header for all requests in Flutter? I\'ve searched a lot and couldn\'t find any i

Answer 1

Using dio package u can do that :

Dio dio = Dio(BaseOptions(
 connectTimeout: 30000,
 baseUrl: 'your api',
 responseType: ResponseType.json,
 contentType: ContentType.json.toString(),
))
..interceptors.addAll(
[
  InterceptorsWrapper(onRequest: (RequestOptions requestOptions) {
    dio.interceptors.requestLock.lock();
    String token = ShareP.sharedPreferences.getString('token');
    if (token != null) {
      dio.options.headers[HttpHeaders.authorizationHeader] =
          'Bearer ' + token;
    }
    dio.interceptors.requestLock.unlock();
    return requestOptions;
  }),
  // other interceptor
 ],
);