React Native SectionList is a list of sections and heading. It is among the simple but mostly used components. Here is the example of SectionList which will be helpful for you to understand how to use SectionList. You can also check FlatList example for the Simple list.
To Import SectionList in Code
1 | import {SectionList} from 'react-native' |
Render Using
1 2 3 4 5 6 7 | <SectionList ItemSeparatorComponent={<strong>Separator View</strong>} sections={<strong>Section Data</strong>} renderSectionHeader={({ section }) => (<strong>Header View</strong>)} renderItem={({ item }) => (<strong>Single Item View</strong>)} keyExtractor={(item, index) => index} /> |
In this example, we will make a list of country names with the header of their initials. 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 thereact-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 project
This will make a project structure with an index file named App.js in your project directory.
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 61 62 63 64 65 66 67 68 69 | //This is an example code for SectionList// import React, { Component } from 'react'; //import react in our code. import { StyleSheet , View , SectionList , Text , Platform , Alert} from 'react-native'; //import all the components we are going to use. export default class App extends Component<{}> { GetSectionListItem = item => { //Function for click on an item Alert.alert(item); }; FlatListItemSeparator = () => { return ( //Item Separator <View style={{height: 0.5, width: '100%', backgroundColor: '#C8C8C8'}}/> ); }; render() { var A = [{'id':'1','value':'Afghanistan'}, {'id':'2','value':'Afghanistan'}, {'id':'3','value':'Afghanistan'}]; var B = [{'id':'4','value':'Benin'}, {'id':'5','value':'Bhutan'}, {'id':'6','value':'Bosnia'}, {'id':'7','value':'Botswana'}, {'id':'8','value':'Brazil'}, {'id':'9','value':'Brunei'}, {'id':'10','value':'Bulgaria'},]; var C = [{'id':'11','value':'Cambodia'}, {'id':'12','value':'Cameroon'}, {'id':'13','value':'Canada'}, {'id':'14','value':'Cabo'}]; return ( <View style={{ marginTop: Platform.OS == 'ios' ? 20 : 30 }}> <SectionList ItemSeparatorComponent={this.FlatListItemSeparator} sections={[ { title: 'Section Head For Data A', data: A }, { title: 'Section Head For Data B', data: B }, { title: 'Section Head For Data C', data: C }, ]} renderSectionHeader={({ section }) => ( <Text style={styles.SectionHeaderStyle}> {section.title} </Text> )} renderItem={({ item }) => ( // Single Comes here which will be repeatative for the FlatListItems <Text style={styles.SectionListItemStyle} //Item Separator View onPress={this.GetSectionListItem.bind(this, 'Id: '+item.id+' Name: '+item.value)}> {item.value} </Text> )} keyExtractor={(item, index) => index} /> </View> ); } } const styles = StyleSheet.create({ SectionHeaderStyle: { backgroundColor: '#CDDC89', fontSize: 20, padding: 5, color: '#fff', }, SectionListItemStyle: { fontSize: 15, padding: 15, color: '#000', backgroundColor: '#F5F5F5', }, }); |
To Run the React Native App
Open the terminal again and jump into your project using. To run the project on an Android Virtual Device or on real debugging device
or on the iOS Simulator by running
Android
IOS
This is how you can make a SectionList. 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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