@digitalbuddha @sav007 please sir review this ,thanks

Why would need to make json instead of passing strings?

@digitalbuddha Sir when i use this same error occur
mutation new_mutation($email:JSON!,$password:JSON!)
{
Account
{
AccountLogin(input:{credentials:{email:$email,password:$password}})
{
obj
}
}
}

//////////////////////////////////////////////////calll

        Myapolloclient.getmyapolloclient().mutate(
                New_mutationMutation.builder().email("ali@gmail.com").password("password").build()).enqueue(new ApolloCall.Callback<New_mutationMutation.Data>(){

            @Override
            public void onResponse(@Nonnull Response<New_mutationMutation.Data> dataResponse) {

                Log.d("response", dataResponse.data().Account().__typename());
            }

            @Override
            public void onFailure(@Nonnull ApolloException e) {

            }
        });
    } catch (Throwable t) {
        Log.d("exception", t.toString());
    }

04-19 11:52:36.469 13430-13451/com.sourcey.materialloginexample E/AndroidRuntime: FATAL EXCEPTION: Apollo Dispatcher
Process: com.sourcey.materialloginexample, PID: 13430
java.lang.IllegalArgumentException: Can't map GraphQL type: JSON to: class java.lang.Object. Did you forget to add custom type adapter?
at com.apollographql.apollo.response.ScalarTypeAdapters.adapterFor(ScalarTypeAdapters.java:30)
at com.apollographql.apollo.internal.json.InputFieldJsonWriter.writeCustom(InputFieldJsonWriter.java:72)
at com.example.alizain.new_apollo_example.New_mutationMutation$Variables$1.marshal(New_mutationMutation.java:149)
at com.apollographql.apollo.internal.interceptor.ApolloServerInterceptor.httpRequestBody(ApolloServerInterceptor.java:147)
at com.apollographql.apollo.internal.interceptor.ApolloServerInterceptor.httpCall(ApolloServerInterceptor.java:112)
at com.apollographql.apollo.internal.interceptor.ApolloServerInterceptor$1.run(ApolloServerInterceptor.java:78)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
at java.lang.Thread.run(Thread.java:764)

Sir server side accept object but from there data passing through string ,so error is creating

You should pass email argument as a String or create a separate GraphQL type for it.

With this PR you can now pass JSON as argument: #897