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 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-cli

Run the following commands to create a new React Native project

react-native init ProjectName

If 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.X

react-native init ProjectName --version react-native@next

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

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

cd ios && pod install && cd ..

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

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

react-native run-android

or on the iOS Simulator by running (macOS only)

react-native run-ios

Download Source Code

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. 🙂