React Native Tricks: Adding Refresh feature.

In this article, we'll investigate how to implement pull-to-refresh functionality in a React Native application using FlatList component. The result will looks like this.

Project setup:

To create this simple refresh, we need to have a FlatList in your screen with some mockData.

import React from 'react';
import { FlatList, View } from 'react-native';
import mockData from './mockData';

const Example = () => {
    return (
        <View>
            <FlatList
                data={mockData}
                renderItem={(item) => <View>{item.name}</View>} 
              />
        </View>
    )
}

Then to create refresh feature, we need to create a refresh state with initialValue is false.

This state will change after every time user scroll to refresh.

import React from 'react';
import { FlatList, View } from 'react-native';
import mockData from './mockData';

const Example = () => {
    const [refresh, setRefresh] = React.useState(false)

    useEffect(() => {
        if (refresh) {    
            setTimeout(() => {
                setRefresh(false)
            }, 10000)
        }
    }, [refresh])

    const onRefresh = React.useCallback(() => {
        setRefresh(true)
    }, [])
    return (
        <View>
            <FlatList
                data={mockData}
                renderItem={(item) => <View>{item.name}</View>} 
              />
        </View>
    )
}

Thanks for reading! I hope you found this article useful for better understanding how to add pull-to-refresh in your React Native application. Be sure to leave a comment if you have any questions. Happy coding!