React Native Swipe Down to Refresh List View Using Refresh Control

Swipe Down to Refresh

Here is an example of React Native Swipe Down to Refresh ListView Using Refresh Control. It was first introduced in Android Material Design and became very popular. Almost all Apps are using Swipe down to refresh. In React Native you can use this feature using RefreshControl provided by React Native.

To Import Refresh Control in Code

import { RefreshControl} from 'react-native'

Swipe Down to Refresh ListView Using Refresh Control

<FlatList
    data={dataSource}
    keyExtractor={(item, index) => index.toString()}
    ItemSeparatorComponent={ItemSeparatorView}
    enableEmptySections={true}
    renderItem={ItemView}
    refreshControl={
    <RefreshControl
        //refresh control used for the Pull to Refresh
        refreshing={refreshing}
        onRefresh={onRefresh}
    />
    }
/>

In this example, we will make a simple list that is having from the network call and we can refresh the data using swiping down. So let’s get started.

To Make a React Native App

Getting started with React Native will help you to know more about the way you can make a React Native project. We are going to use react-native init to make our React Native App. Assuming that you have node installed, you can use npm to install the react-native-cli command line utility. Open the terminal and go to the workspace and run

npm install -g react-native-cli

Run the following commands to create a new React Native project

react-native init ProjectName

If you want to start a new project with a specific React Native version, you can use the --version argument:

react-native init ProjectName --version X.XX.X
react-native init ProjectName --version react-native@next

This will make a project structure with an index file named App.js in your project directory.

Code

Open App.js in any code editor and replace the code with the following code

App.js

//React Native Swipe Down to Refresh List View Using Refresh Control
//https://aboutreact.com/react-native-swipe-down-to-refresh-listview-using-refreshcontrol/

//import React in our code
import React, {useState, useEffect} from 'react';

//import all the components we are going to use
import {
  SafeAreaView,
  StyleSheet,
  ActivityIndicator,
  FlatList,
  Text,
  View,
  RefreshControl,
} from 'react-native';

const App = () => {
  const [refreshing, setRefreshing] = useState(true);
  const [dataSource, setDataSource] = useState([]);

  useEffect(() => {
    getData();
  }, []);

  const getData = () => {
    //Service to get the data from the server to render
    fetch('https://jsonplaceholder.typicode.com/posts')
      .then((response) => response.json())
      .then((responseJson) => {
        setRefreshing(false);
        setDataSource(responseJson);
      })
      .catch((error) => {
        console.error(error);
      });
  };

  const ItemView = ({item}) => {
    return (
      // Flat List Item
      <Text
        style={styles.itemStyle}
        onPress={() => getItem(item)}>
        {item.title}
      </Text>
    );
  };

  const ItemSeparatorView = () => {
    return (
      // Flat List Item Separator
      <View
        style={{
          height: 0.5,
          width: '100%',
          backgroundColor: '#C8C8C8'}} 
      />
    );
  };

  const getItem = (item) => {
    //Function for click on an item
    alert('Id : ' + item.id + ' Title : ' + item.title);
  };

  const onRefresh = () => {
    //Clear old data of the list
    setDataSource([]);
    //Call the Service to get the latest data
    getData();
  };

  return (
    <SafeAreaView style={{flex: 1}}>
      <View style={styles.container}>
        {refreshing ? <ActivityIndicator /> : null}
        <FlatList
          data={dataSource}
          keyExtractor={(item, index) => index.toString()}
          ItemSeparatorComponent={ItemSeparatorView}
          enableEmptySections={true}
          renderItem={ItemView}
          refreshControl={
            <RefreshControl
              //refresh control used for the Pull to Refresh
              refreshing={refreshing}
              onRefresh={onRefresh}
            />
          }
        />
      </View>
    </SafeAreaView>
  );
};

const styles = StyleSheet.create({
  container: {
    justifyContent: 'center',
    flex: 1,
    marginTop: 10,
  },
  itemStyle: {
    fontSize: 20,
    padding: 10,
  },
});

export default App;

To Run the React Native App

Open the terminal again and jump into your project using.

cd ProjectName

To run the project on an Android Virtual Device or on real debugging device

react-native run-android

or on the iOS Simulator by running (macOS only)

react-native run-ios

Download Source Code

Output Screenshots

     

Output in Online Emulator

That was the React Native React Native Swipe Down to Refresh ListView Using RefreshControl. If you have any doubts or you want to share something about the topic you can comment below or contact us here. There will be more posts coming soon. Stay tuned!

Hope you liked it. 🙂


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