This is an Example of Overlay ActivityIndicator / Progress Bar / Loading Spinner in React Native. This is the most common thing that we use in every application. We will use the react-native-loading-spinner-overlay library to make an overlay Loader. This is basically used to block the screen while the application is doing some work like fetching data from the server or processing any big data which needs some resources.
To make an Overlay ActivityIndicator we will use Spinner component provided by react-native-loading-spinner-overlay.
Spinner
1 2 3 4 5 6 7 8 | <Spinner //visibility of Overlay Loading Spinner visible={this.state.loading} //Text with the Spinner textContent={'Loading...'} //Text style of the Spinner Text textStyle={styles.spinnerTextStyle} /> |
In this example, we will make an overlay Spinner which will be visible in every 3 seconds using an interval function. 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-cliRun the following commands to create a new React Native project
react-native init ProjectNameIf 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.Xreact-native init ProjectName --version react-native@nextThis will make a project structure with an index file named App.js in your project directory.
Installation of Dependency
To use Spinner component you need to install react-native-loading-spinner-overlay dependency.
To install this open the terminal and jump into your project
1 | cd ProjectName |
Run the following command
1 | npm install react-native-loading-spinner-overlay --save |
This command will copy all the dependencies into your node_module directory. –save is optional, it is just to update the react-native-loading-spinner-overlay dependancy in your package.json file.
Now 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 | /*Example of Recat Native Loading Spinner Overlay*/ import * as React from 'react'; import { Text, View, StyleSheet, Button } from 'react-native'; import Spinner from 'react-native-loading-spinner-overlay'; export default class App extends React.Component { state = { //default loading false loading: false, }; componentDidMount() { //Setting a timer to show the spinner demo in every 3 second setInterval(() => { this.setState({ //change the state of the laoding in every 3 second loading: !this.state.loading, }); }, 3000); } render() { return ( <View style={styles.container}> <Spinner //visibility of Overlay Loading Spinner visible={this.state.loading} //Text with the Spinner textContent={'Loading...'} //Text style of the Spinner Text textStyle={styles.spinnerTextStyle} /> <Text style={{ textAlign: 'center', fontSize: 20 }}> Spinner Overlay Example </Text> </View> ); } } const styles = StyleSheet.create({ container: { flex: 1, justifyContent: 'center', textAlign: 'center', paddingTop: 30, backgroundColor: '#ecf0f1', padding: 8, }, spinnerTextStyle: { color: '#FFF', }, }); |
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).
That was the example of Overlay ActivityIndicator/Progress Bar/Loading Spinner in React Native. 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!
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