Using React Query for Data Fetching
Integrate React Query in React Native for efficient data fetching with the useQuery hook. Create custom hooks for complex queries and optimize data retrieval based on login status.
We'll cover the following
As we know, we need to fetch a few different pieces of data for our app. We will fetch the following:
List of avatars
List of images for the “Feed” surface
List of images for the “Favorited Images” surface
List of conversations
We are free to add the React Query fetching wherever we like. For simple queries, we can simply use the useQuery
hook provided by the library in our components. We can also write our own custom hooks, holding more logic or conditions.
Checking the login status
Let’s start by looking at the simplest possible example: querying the server to check whether the user is logged in.
In order to use a React Query hook in the top-level component where we set up our navigation to display either the login screen or not, we will need to reorganize our code a little bit. We cannot have QueryClientProvider
in the return statement of the same component trying to use a useQuery
hook. Let’s change the name of the main component from App
to AppWrapped
and let’s add this new App
component in the App.js
file:
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