React Native Get Unique ID of Device

Unique Id of Device

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 that 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 a 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 command line interface to make our React Native App.

If you have previously installed a global react-native-cli package, please remove it as it may cause unexpected issues:

npm uninstall -g react-native-cli @react-native-community/cli

Run the following commands to create a new React Native project

npx react-native init ProjectName

If you want to start a new project with a specific React Native version, you can use the --version argument:

npx react-native init ProjectName --version X.XX.X

Note If the above command is failing, you may have old version of react-native or react-native-cli installed globally on your pc. Try uninstalling the cli and run the cli using npx.

This 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

cd ProjectName

Run the following command

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 dependency in your package.json file.

CocoaPods Installation

Please use the following command to install CocoaPods

npx pod-install

Code to get Unique Id of any Device

Now Open App.js in any code editor and replace the code with the following code

App.js

// React Native Get Unique ID of Device
// https://aboutreact.com/react-native-get-unique-id-of-device/

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

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

//import DeviceInfo which will help us to get UniqueId
import DeviceInfo from 'react-native-device-info';

const App = () => {
  const [deviceId, setDeviceId] = 
    useState('Click below to get unique Id');

  const getdeviceId = () => {
    var uniqueId = DeviceInfo.getUniqueId();
    setDeviceId(uniqueId);
  };

  return (
    <SafeAreaView style={styles.container}>
      <View style={styles.container}>
        <Text style={styles.titleStyle}>
          React Native Get Unique ID of Device
        </Text>
        <Text style={styles.textStyle}>
          {deviceId}
        </Text>
        <TouchableOpacity
          onPress={getdeviceId}
          activeOpacity={0.5}
          style={styles.buttonStyle}>
          <Text style={styles.buttonTextStyle}>
            SHOW ME THE UNIQUE ID OF DEVICE
          </Text>
        </TouchableOpacity>
      </View>
    </SafeAreaView>
  );
};
export default App;

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: '#F5FCFF',
    justifyContent: 'center',
    alignItems: 'center',
  },
  titleStyle: {
    fontSize: 20,
    textAlign: 'center',
    margin: 10,
  },
  buttonStyle: {
    padding: 10,
    backgroundColor: '#646464',
  },
  buttonTextStyle: {
    color: '#fff',
    textAlign: 'center',
  },
  textStyle: {
    textAlign: 'center',
    fontSize: 16,
    marginBottom: 10,
    padding: 20,
    color: '#f00',
  },
});

To Run the React Native App

Open the terminal again and jump into your project using.

cd ProjectName

1. Start Metro Bundler

First, you will need to start Metro, the JavaScript bundler that ships with React Native. To start Metro bundler run following command:

npx react-native start

Once you start Metro Bundler it will run forever on your terminal until you close it. Let Metro Bundler run in its own terminal. Open a new terminal and run the application.

2. Start React Native Application

To run the project on an Android Virtual Device or on real debugging device:

npx react-native run-android

or on the iOS Simulator by running (macOS only)

npx react-native run-ios

Output Screenshots

This is how you can get the Unique ID of Device. 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. 🙂