In our last Retrofit post we've given you an introduction to converters. In this blog post, we want to dive deeper into the most common format: JSON. After demonstrating the integration of the Gson converter, we'll also show you how to customize Gson's mapping rules. If you prefer to catch …

In the past months we've shown you a wide variety of Retrofit features. In this blog post we'll explore a new area: mocking. Specifically, we'll introduce to you techniques to set up mock server responses on the phone. If you want to learn about other Retrofit topics, check our list …

Requesting data from API endpoints that might respond with large datasets is obviously bad practice. Breaking down massive information packets into smaller chunks is the idea behind pagination. There’s no de facto standard on how to implement pagination on server-side and therefore, clients have to adapt to the solution …

In a previous blog post we've shown you how to enable logging of requests and responses with Retrofit 2. We also explained that you should only enable logging for development builds only. We recommended that production versions should have logging disabled. In this blog post we'll show you how to …

When working with OAuth 2 APIs, you have to manage access tokens and sometimes also refresh tokens. Generally, the access token is what you’ll use to authenticate your requests. However, the access tokens are short lived and the lifetime differs per API provider. Due to security reasons, the access …

In the past, we've explored how to add request headers with Retrofit and how to statically change request headers with OkHttp. In this blog post, we'll dig into how you can add a dynamic amount of request headers to your Retrofit requests. This is a new feature of Retrofit 2. …

In previous tutorial, we've shown you how to upload files and upload multiple files. So far, we've focused on the file part of multipart requests. In this tutorial, we'll concentrate on the data that goes along with the request, for example description string(s). If you don't feel ready for …

We've already shown you in a tutorial how to upload files to a server. In this tutorial, we'll show you a special case: uploading multiple files with one request. If you want to catch up with one of our plenty Retrofit topics, check our outline of posts: {{outline}} {{video}} Upload …