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Device Detection In Angular Using ngx-device-detector Library

In this article, we are going to explore the device detection library 'ngx-device-detector' in the angular application.

An Overview On ngx-device-detector Library:

This library is useful to identify a browser, device type, request user agent, etc. This library is also compatible with the angular AOT compiler.

Library provides us angular injectable service like 'DeviceDetectorService'. This service provides methods like:
  • getDeviceInfo
  • isMobile
  • isTablet
  • isDesktop

Create A Sample Angular Application:

Let's create a sample angular application to understand the 'ngx-device-detector' library.

Command To Install Angular CLI:(If not installed on your system previously)
npm install -g @angular/cli
Angular CLI Command To Create Angular App:
ng new your_project_name
Command To Run App:
ng serve

Install Device Detection Npm Package:

Command To Install Device Detection Package
npm install ngx-device-detector --save
After installing npm package reference will be automatically added to the package.json file.

Check Device Detection:

Let's write a sample code that will give full information on the device
src/app/app.component.ts:
import { Component, OnInit } from '@angular/core';
import { DeviceDetectorService, DeviceInfo } from 'ngx-device-detector';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css'],
})
export class AppComponent implements OnInit {

  deviceInfo:DeviceInfo;
  title = 'device-detection-sample';
  constructor(private deviceDetectorService: DeviceDetectorService) {}
  ngOnInit(): void {
     this.deviceInfo = this.deviceDetectorService.getDeviceInfo();
  }
}
  • (Line: 13) The 'DeviceDetectorService' provided by the 'ngx-device-detector' injected into our component.
  • (Line: 15) The 'DeviceDetectorService' provides a method 'getDeviceInfo' this method returns of type 'DeviceInfo' interface where it provides all the information of our device.
src/app/app.component.html:
<div>
  <ul>
    <li>user Agent - {{deviceInfo.userAgent}}</li>
    <li>Os - {{deviceInfo.os}}</li>
    <li>browser - {{deviceInfo.browser}}</li>
    <li>device - {{deviceInfo.device}}</li>
    <li>os_version - {{deviceInfo.os_version}}</li>
    <li>browser_version - {{deviceInfo.browser_version}}</li>
    <li>deviceType - {{deviceInfo.deviceType}}</li>
    <li>orientation - {{deviceInfo.orientation}}</li>
  </ul>
</div>
  • Here all the properties are derived from the 'DeviceInfo' interface.
The output from the desktop
The output from the mobile

When Library Useful:

  • Tracking the user's devices, browser names
  • To dynamically render the angular components based on the browser type.
  • To identify the browser-specific errors, to know from which browser are happening.

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Wrapping Up:

Hopefully, I think this article delivered some useful information about device detection in angular application. I love to have your feedback, suggestions, and better techniques in the comment section below.

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