This article explores how to integrate TanStack Query, a JavaScript library that simplifies querying and caching data, with React Native to add offline capabilities to mobile apps. By following the steps outlined in the article, developers can cache data locally, define queries and mutations, and sync data with the server. The result is a more resilient and reliable app that works seamlessly even when the user is offline.

Create the project

Create the Expo project

Install the dependencies

Create the screens

App component

ToDo List screen

Add ToDo screen

Integrating React Native with TanStack Query

Create a GraphQL client with TanStack Query

Querying the list of ToDos

Adding a ToDo

Completing a ToDo

Offline capabilities

Simulating offline state

AddTodoWithId mutation

Persisting the mutations accross sessions

Conclusion

Adding Offline Capabilities to React Native Apps with TanStack Query