Connect with us

App Development

How to Build a Progressive Web App With Ionic 4

Published

on

Big Guide https://ionicthemes.com/tutorials/about/the-complete-guide-to-progressive-web-apps-with-ionic4

Progressive Web Apps (PWA) are web applications that provide a mobile app-like experience to users. They are designed to work on any device with a web browser and can be installed on the user’s home screen without the need for an app store. Ionic 4 is a popular framework for building PWAs, as it provides a set of pre-built UI components and tools to create fast and responsive mobile applications. In this article, we will go through the steps of building a PWA with Ionic 4.

Step 1: Install Ionic 4

Before we start building the PWA, we need to install Ionic 4. Ionic 4 is built on top of Angular, so we need to have Angular installed as well. To install Ionic 4 and Angular, we can use the following command:

javaCopy codenpm install -g @ionic/cli @angular/cli

Step 2: Create a new Ionic 4 Project

Once we have installed Ionic 4 and Angular, we can create a new Ionic 4 project by running the following command:

sqlCopy codeionic start myApp blank --type=angular

This will create a new Ionic 4 project called “myApp” with the blank template.

Step 3: Test the App

Now we can test the app by running the following command:

Copy codeionic serve

This will launch the app in a web browser, and we can see the default home page of the app.

Step 4: Add PWA Support

To add PWA support to the app, we need to install the “@angular/pwa” package. We can do this by running the following command:

sqlCopy codeng add @angular/pwa --project myApp

This will add PWA support to the app and create a “manifest.webmanifest” file, which contains metadata about the app, such as its name, icons, and theme color.

Step 5: Modify the App Manifest

Next, we need to modify the app manifest file to include the necessary information about the app. We can do this by opening the “manifest.webmanifest” file and editing the values for the “name”, “short_name”, “start_url”, “icons”, and “theme_color” fields.

Step 6: Add Icons

To add icons to the app, we need to create a set of images with different sizes and resolutions. We can use a tool like “https://app-manifest.firebaseapp.com/” to generate the icons for us. Once we have the icons, we can place them in the “src/assets/icon” folder of the app.

Step 7: Modify the App Module

To enable PWA features in the app, we need to modify the app module by importing and registering the “ServiceWorkerModule”. We can do this by opening the “app.module.ts” file and adding the following code:

typescriptCopy codeimport { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { IonicModule } from '@ionic/angular';
import { AppComponent } from './app.component';
import { ServiceWorkerModule } from '@angular/service-worker';
import { environment } from '../environments/environment';

@NgModule({
  declarations: [AppComponent],
  imports: [
    BrowserModule,
    IonicModule.forRoot(),
    ServiceWorkerModule.register('ngsw-worker.js', {
      enabled: environment.production,
    }),
  ],
  bootstrap: [AppComponent],
})
export class AppModule {}

Step 8: Build the App

Now we can build the app by running the following command:

cssCopy codeionic build --prod

This will build the app in production mode and generate a set of optimized files for deployment.

Step 9: Deploy the App

Finally, we need to deploy the app to a web server.