Changing Angular 2 web app code to Ionic 2 mobile app code?

I currently have a web application code that was written using Angular 2. My goal is to create a hybrid mobile application by utilizing Ionic 2 for the same web application. Since Ionic 2 incorporates core concepts of Angular 2, I have a few questions:

Is it feasible to directly use the existing Angular 2 code in Ionic 2 with just minor adjustments for platform compatibility? Is there any method available to seamlessly convert the Angular 2 code into Ionic 2? Or do I need to start coding from scratch in Ionic 2 specifically for mobile applications?

Any assistance on this matter would be greatly appreciated.

Answer №1

When it comes to transitioning your current app to Ionic, there are a few things to consider. Ionic serves as a framework wrapper for Angular, which means that technically, your app can be converted. However, you will need to weigh the benefits of making this transition.

Since Ionic utilizes specific components within its framework, you will need to refactor your code according to Ionic's specifications in order to style the app as desired. The navigation system in Ionic also differs from standard Angular, using methods like pop() and push() for navigation, which may require adjustments on your end.

_ ionic start

Additionally, Ionic relies on Cordova, which is not typically included by default in an Angular 2 application. This means that extra configuration steps would be necessary, potentially leading to a bloated codebase.

One suggestion is to begin afresh with a new Ionic project by downloading the Ionic CLI:

_ ionic start

By starting from scratch with a new Ionic project, you can benefit from streamlined configuration. Meanwhile, you can extract core functionality from your existing Angular 2 app and transfer it into services and components that can then be exported to the new Ionic project.

Answer №2

You can't simply paste Angular code into an Ionic project.

To make it work, you need to adapt your code to fit the Ionic framework.

After struggling to find a solution myself, I created my own tool called ABC framework, which converts Angular web apps into Cordova apps seamlessly.

This framework also comes with additional features like live reloading for an enhanced development experience.

I believe this will be the perfect solution for your needs.

Answer №3

I stumbled upon a helpful tutorial that illustrates the process of converting an Angular 2 project into a Cordova application. Tutorial: Explore the Tutorial Here

Although the question initially did not reference Cordova, it is worth noting that Ionic utilizes Cordova and aims to create a mobile app. The tutorial provides detailed instructions on achieving this goal.

UPDATED

Gathered from the aforementioned post

REQUIREMENTS

Prior to proceeding with the steps outlined below, ensure that you have successfully installed your Cordova CLI. If not, please refer to the Cordova Getting Started guide and Documentation for assistance in completing this task. Additionally, you must have already set up your Angular version 2 or higher project. This guide will be based on Angular CLI, so if you have not yet installed it, kindly visit the Angular Documentation STEPS (Tip: Remember to make a backup before executing these steps)

To begin, create a new Cordova Project using the following command: cordova create hello com.example.hello HelloWorld 2. Add the desired Cordova Building Platform:

cordova platform add [platform] Where the platform could be Android, Blackberry, or IOS

  1. Integrate your Angular project with the newly created Cordova project by copying all folders and files (excluding the package.json file) from your Angular project's root directory to the Cordova project's root directory.

  2. Thoroughly compare and merge the package.json files from both directories into one unified file within the Cordova project. The resulting package.json should align as illustrated below:

A visual representation of how your package.json should appear after merging 5. Your development project folder resides in src/. You should commence testing/building your Angular 4 app here!

  1. Execute ng serve to launch a dev server. Navigate to http://localhost:4200/. Any source file modifications will trigger automatic reloads within the app.

By following the aforementioned steps, you have effectively merged and converted your Angular Project into a Mobile App. To integrate the Cordova plugin, incorporate a reference to cordova.js in the html file of your angular project (src/index.html).

Please note that introducing the reference to cordova.js may generate errors when tested on a local server.

Add the Cordova Device plugin utilizing the provided command:

cordova plugin add cordova-plugin-device We are nearing completion; now let’s utilize Cordova to obtain Device information.

In your angular project, import and implement OnInit while adding the plugin callback function as outlined below.

import { Component , OnInit} from '@angular/core'; .... .... export class AppComponent implements OnInit{ ngOnInit() {
document.addEventListener("deviceready", function() {
alert(device.platform); }, false); } } Typescript will issue a warning regarding 'device.platform' being unidentified

To rectify this concern, insert the line below directly after the import statement

declare var device; That concludes the adjustment.

Finally, proceed with building our project.

BUILDING AND RUNNING OUR APP

Revise the tag in your src/index.html to , thus granting Angular access to files in a directory path due to non-server hosting. Before initiating the build process, understand that an Angular project generates a dist folder upon successful compilation, whereas Cordova operates using the www folder for execution. Consequently, update the Angular project to compile in the www folder. To achieve this, modify the outDir property value from "dist" to "www" within .angular-cli.json/angular.json located in our root directory. Subsequently, follow through with building our Angular app – consult my prior article on HOW TO DEPLOY AND HOST AN ANGULAR 2 OR 4 PROJECT ON A SERVER should you require guidance in this area. Lastly, build and execute your Cordova project by running the following code: cordova build android|ios|[platform]

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