Overview

Welcome back! This is the second course in the two-part series on the Apollo Kotlin SDK. As a reminder, by the end of this series you will have learned how to:

• Download a schema
• Run code generation
• Write queries and mutations
• Handle errors
• Handle pagination
• Authenticate with a backend server
• Use subscriptions to receive real-time updates

What we're building

In Part 1, we began building an app to "book a seat" on any of the rockets that have been sent into space by SpaceX.

Part 2 picks up where we left off. Now that we've made our first successful queries, we'll learn about pagination within Apollo Kotlin. Later in the course we'll use GraphQL mutations to edit data on the server. The final lesson introduces subscriptions for adding real-time data to your app.

Prerequisites

To follow along...

• You should be familiar with basic programming concepts in Kotlin. (We assume some prior experience with Android development.)
• You'll need Android Studio installed.
• Bonus: The course is built using Jetpack Compose, Kotlin coroutines, Navigation Component, and Coil. You won't need any prior experience with these tools.

If you haven't taken Part 1 of this series yet, we highly recommend doing so.

Up next

Let's jump back into app, and continue building out the user interface with a detailed view.