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React Native

React Query is designed to work out of the box with React Native, with the exception of the devtools, which are only supported with React DOM at this time.

There is a 3rd party Flipper plugin which you can try: https://github.com/bgaleotti/react-query-native-devtools

If you would like to help us make the built-in devtools platform agnostic, please let us know!

Online status management

React Query already supports auto refetch on reconnect in web browser. To add this behavior in React Native you have to use React Query onlineManager as in the example below:

ts
import NetInfo from '@react-native-community/netinfo'
import { onlineManager } from '@tanstack/react-query'
onlineManager.setEventListener(setOnline => {
return NetInfo.addEventListener(state => {
setOnline(!!state.isConnected)
})
})

Refetch on App focus

Instead of event listeners on window, React Native provides focus information through the AppState module. You can use the AppState "change" event to trigger an update when the app state changes to "active":

ts
import { useEffect } from "react"
import { AppState, Platform } from 'react-native'
import type { AppStateStatus } from "react-native"
import { focusManager } from '@tanstack/react-query'
function onAppStateChange(status: AppStateStatus) {
if (Platform.OS !== 'web') {
focusManager.setFocused(status === 'active')
}
}
useEffect(() => {
const subscription = AppState.addEventListener('change', onAppStateChange)
return () => subscription.remove()
}, [])

Refresh on Screen focus

In some situations, you may want to refetch the query when a React Native Screen is focused again. This custom hook will call the provided refetch function when the screen is focused again.

ts
import React from 'react'
import { useFocusEffect } from '@react-navigation/native'
export function useRefreshOnFocus<T>(refetch: () => Promise<T>) {
const firstTimeRef = React.useRef(true)
useFocusEffect(
React.useCallback(() => {
if (firstTimeRef.current) {
firstTimeRef.current = false;
return;
}
refetch()
}, [refetch])
)
}

In the above code, refetch is skipped the first time because useFocusEffect calls our callback on mount in addition to screen focus.