Flutter cache mechanism for Dio retrofit sub library

Question

i my application i'm using Dio's Retrofit sub library, and inside that i'm not sure how can i define cache mechanism for that,

i found this line in Retrofit sample code:

@GET("")
Future<String> testCustomOptions(@DioOptions() Options options);

now how can i define cache on this http request?

Retrofit documentation:

void main(List<String> args) {
  final dio = Dio();   // Provide a dio instance
  dio.options.headers["Demo-Header"] = "demo header";   // config your dio headers globally
  final client = RestClient(dio);
  
  client.getTasks().then((it) => logger.i(it));

dio-http-cache documentation:

QuickStart

Add a dio-http-cache interceptor in Dio :

dio.interceptors.add(DioCacheManager(CacheConfig(baseUrl: "http://www.google.com")).interceptor);

Set maxAge for a request :

Dio().get(
  "http://www.google.com",
  options: buildCacheOptions(Duration(days: 7)),
);

my full implemented code:

Provider(
   create: (_) => MyApis.create(),
),


abstract class MyApis{
  factory MyApis(Dio dio, {String baseUrl}) = _MyApis;

  @GET("/login")
  Future<HttpResponse<PageInformation>> login(@DioOptions() Options options);

  static MyApis create() {
    final dio = Dio();
    dio.options.headers['Content-Type'] = 'application/json';
    dio.options.receiveTimeout = 60000;
    dio.options.connectTimeout = 120000;
    return _MyApis(dio);
  }
}

Answer 1

Add Parameter in your API Add point Call

Future<HttpResponse<PageInformation>> login(@DioOptions() Options options);

Add Interceptor in Dio

dio.interceptors.add(DioCacheManager(CacheConfig(baseUrl: 'YOUR BASE URL')).interceptor);

Create an object for Endpoint argument

Options options = buildCacheOptions(Duration(days: 10),forceRefresh: true);

Call your API End point

myapi.login(options)