React Native Show Message for empty FlatList

Message for Empty FlatList

Here is an example of React Native Show Message for empty FlatList. As the topic name describes we will show the Message for the empty list. We can use this while we are making a dynamic list and the data is coming from the server. After loading the data from the server we can directly set the DataSource to the list by defining the props ListEmptyComponent of FlatList. This will show the error message which you have set for the empty list but if the DataSource has some value it will render the List.

Here is some line of code that we have used to show the message for the empty List.

<FlatList
  data={dataSource}
  keyExtractor={(item, index) => index.toString()}
  ItemSeparatorComponent={ItemSeparatorView}
  renderItem={ItemView}
  //Message to show for the Empty list
  ListEmptyComponent={EmptyListMessage}
/>

To start with this example

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 Show Message for empty FlatList
// https://aboutreact.com/react-native-show-message-for-empty-flatlist/

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

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

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

  const EmptyListMessage = ({item}) => {
    return (
      // Flat List Item
      <Text
        style={styles.emptyListStyle}
        onPress={() => getItem(item)}>
        No Data Found
      </Text>
    );
  };

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

  return (
    <SafeAreaView style={{flex: 1}}>
      <FlatList
        data={dataSource}
        keyExtractor={(item, index) => index.toString()}
        ItemSeparatorComponent={ItemSeparatorView}
        renderItem={ItemView}
        //Message to show for the Empty list
        ListEmptyComponent={EmptyListMessage}
      />
    </SafeAreaView>
  );
};

const styles = StyleSheet.create({
  emptyListStyle: {
    padding: 10,
    fontSize: 18,
    textAlign: 'center',
  },
});

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

This is how you can show the message for empty FlatList. 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. 🙂