Example of GridView using FlatList in React Native
GridView has the same popularity as Listview, both are used to arrange the items in a proper manner. So here is the Example of GridView using FlatList in React Native.
GridView can be used when we have to make a View Group that displays items in a two-dimensional, scrollable grid. The most usable example of the Grid is the image gallery where we have to showcase all the images. In this example, we will use FlatList to make our GridView. React Native FlatList is a simple list. It is among the simple but mostly used components.
To Import FlatList in Code
1 | import { FlatList} from 'react-native' |
Render Using
1 2 3 4 5 6 7 8 9 10 11 | <FlatList data={this.state.dataSource} renderItem={({ item }) => ( <View style={{ flex: 1, flexDirection: 'column', margin: 1 }}> <Image style={styles.imageThumbnail} source={{ uri: item.src }} /> </View> )} //Setting the number of column numColumns={3} keyExtractor={(item, index) => index} /> |
In this example of GridView, we will make a simple image gallery to showcase the images in the GridView. 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
Run the following commands to create a new React Native projectnpm install -g react-native-cli
This will make a project structure with an index file named App.js in your project directory.react-native init ProjectName
Open App.js in any code editor and replace the code with the following code.
App.js
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 | /*This is an Example of Grid View in React Native*/ import React, { Component } from 'react'; //import rect in our project import { StyleSheet, View, FlatList, ActivityIndicator, Image, TouchableOpacity, } from 'react-native'; //import all the components we will need export default class App extends Component { constructor() { super(); this.state = { dataSource: {}, }; } componentDidMount() { var that = this; let items = Array.apply(null, Array(60)).map((v, i) => { return { id: i, src: 'http://placehold.it/200x200?text=' + (i + 1) }; }); that.setState({ dataSource: items, }); } render() { return ( <View style={styles.MainContainer}> <FlatList data={this.state.dataSource} renderItem={({ item }) => ( <View style={{ flex: 1, flexDirection: 'column', margin: 1 }}> <Image style={styles.imageThumbnail} source={{ uri: item.src }} /> </View> )} //Setting the number of column numColumns={3} keyExtractor={(item, index) => index} /> </View> ); } } const styles = StyleSheet.create({ MainContainer: { justifyContent: 'center', flex: 1, paddingTop: 30, }, imageThumbnail: { justifyContent: 'center', alignItems: 'center', height: 100, }, }); |
To Run the React Native App
Open the terminal again and jump into your project using.cd ProjectNamereact-native run-androidreact-native run-ios (macOS only).IOS
Android
That was React Native GridView using FlatList. If you have any doubt 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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