Every mobile device in the world has its unique ID which is a combination of Alphabetic and Numeric characters. To get the device’s Unique ID and we can use the react-native-device-info library.
The unique device ID is used to identify a device uniquely. For example, if you are making an application which requires a unique device dependent login mechanism like WhatsApp where you want the user to log in from a single device at a time then you can use device unique ID to track the single device login.
So let’s get started with the example to Get Unique ID of Device.
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 DeviceInfo we need to install react-native-device-info package. To install this
Open the terminal and jump into your project
1 | cd ProjectName |
Run the following command
1 | npm install react-native-device-info --save |
This command will copy all the dependencies into your node_module directory. –save is optional, it is just to update the react-native-device-info dependancy in your package.json file.
CocoaPods Installation
After the updation of React Native 0.60, they have introduced autolinking so we do not require to link the library but need to install pods. So to install pods use
1 | cd ios && pod install && cd .. |
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 52 53 54 55 56 57 | //This is an example to get the Unique Id of device// import React, { Component } from 'react'; //import react in our code. import { Platform, StyleSheet, View, Text, TouchableOpacity, } from 'react-native'; //import all the components we are going to use. import DeviceInfo from 'react-native-device-info'; //import DeviceInfo which will help to get UniqueId export default class App extends Component { constructor() { super(); this.state = { deviceId: '', }; } getdeviceId = () => { //Getting the Unique Id from here var id = DeviceInfo.getUniqueID(); this.setState({ deviceId: id, }); }; render() { return ( <View style={styles.MainContainer}> <Text style={{ textAlign: 'center', fontSize: 20, marginBottom: 10 }}> {this.state.deviceId} </Text> <TouchableOpacity onPress={this.getdeviceId} activeOpacity={0.5} style={styles.button}> <Text style={styles.TextStyle}>SHOW ME THE UNIQUE ID OF DEVICE</Text> </TouchableOpacity> </View> ); } } const styles = StyleSheet.create({ MainContainer: { justifyContent: 'center', alignItems: 'center', flex: 1, paddingTop: Platform.OS == 'ios' ? 20 : 0, }, button: { paddingTop: 10, paddingBottom: 10, width: '90%', backgroundColor: '#646464', }, TextStyle: { color: '#fff', textAlign: 'center', }, }); |
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).
This is how you can get the Unique ID of Device. 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. 🙂