I’ve been building out some software recently that involves uploading a bunch of files at once to a server, so I figured it would be worthwhile to share the solution I ended up with in this blog post. The solution is based around using the ng2-file-upload package, but we will be building that into a […]
Sending Data with POST Requests to a NestJS Backend
In the previous tutorial, we focused on making a GET request from an Ionic application to a NestJS backend. A GET request is generally pretty simple, as all we are doing is making a generic request to a specific URL which will then return a response. In this tutorial, we are going to cover how […]
Building a Notepad Application from Scratch with Ionic
A difficult part of the beginner’s journey to learning Ionic is the step between understanding some of the basics and actually building a fully working application for the first time. Concepts explained in isolation can make sense, but it may be difficult to understand when to use them in the context of building an application. […]
Reordering List Items with Ionic Web Components
A while ago, I released a video that walked through how to reorder list items in Ionic 3. Now that Ionic 4 has been released, and just about everything has moved over to web components, the way in which we need to reorder list items has changed a little. In this video, we walk through […]
Live Coding a Party Game with Ionic – Part 2
In the previous tutorial, we started building an application live on screen that would display a series of questions to the user. So far, we have been able to display some dummy data to cycle through questions and change the background colour for each question. In this tutorial, we will finish the application off by […]
Dynamic/Infinite Input Fields in an Ionic Application
Angular has fantastic support for forms, from the simple ngModel to the more robust reactive forms that make use of FormControl and FormGroup. Using ngModel allows us to bind input fields in the template to class members in our TypeScript files. Reactive forms take a similar approach except that we bind our form in the […]
Twitter Style Heart/Like Animation with Angular Animations in Ionic
In this tutorial, we are going to work on building an animated “like” button that will look like this when clicked: Since Ionic provides both a “full” and “empty” heart icon: It is easy enough to create an “on/off” or “liked/unliked” state for a like button that uses these icons – you would just use […]
An Introduction to NestJS for Ionic Developers
Creating a backend for your application has typically required a totally different skill set to what you might use for the front end. Over time, those lines have blurred as the likes of NodeJS and server-side JavaScript have risen in popularity. Now, with NestJS, you might not even feel like you are working on a […]
When to Use Services/Providers/Injectables in Ionic & Angular
Services, which we might also refer to as providers or injectables, are a commonly used pattern in Ionic/Angular development. Services allow us to: Make methods/data available to multiple pages/components throughout our application Perform complex logic or interface with external APIs/Services Share a single instance of the service throughout the application, allowing for communication between pages/components […]
Capacitor Workflow in an Ionic Application
Capacitor was built as an alternative to Cordova, and although much is similar in terms of its methodology, the workflow and commands you will use in a Capacitor application will look quite different to Cordova. In this tutorial, we start out with a simple Ionic application and walk through how to integrate Capacitor and how […]
Dealing with CORS (Cross-Origin Resource Sharing) in Ionic Applications
Almost everybody who is developing Ionic applications will at some point or another run into a fun little error that looks something like this: The Access-Control-Allow-Origin error you see here is the result of the browser’s implementation of CORS (Cross-Origin Resource Sharing). This is an exceedingly common error, but it is also something that is […]
Navigation Basics & Passing Data Between Pages in Ionic & Angular
With the introduction of Ionic 4, we have seen a shift in responsibility for navigation from Ionic itself to whatever the underlying framework being used is. That means that if we are using Angular to build an Ionic application, then we should rely on Angular’s own concepts for navigation (even though it is still technically […]
Production/Development Environment Variables in Ionic & Angular
Often, our production environments are quite different to our development environments. Whilst your application is in development you might just want to make requests to a database running locally on your machine. When you are deploying the application to production you would want the requests to be made to the production database that lives on […]
Styling a Shadow DOM in Ionic 4
Since the release of Ionic 4, many of Ionic’s components now make use of a Shadow DOM. I’ve written about what exactly this means in another article, but the basic idea is that a Shadow DOM provides a component with its own isolated world to operate it – free from interference from the parent document. […]
Anatomy of an Ionic 4 Project
A long time ago I recorded a video that covered the “anatomy” of an Ionic project, and now I have recorded a video in the same style to cover the anatomy of an Ionic 4 and Angular project. An intimidating number of files and folders are generated when you create a new Ionic project – […]
Creating Custom Form Input Components with Ionic & Angular
A while ago I wrote a tutorial on building a custom input component for an Ionic application. It used an HTML5 <canvas> and a gesture listener to create a rating/satisfaction input component that looks like this: It was just a bit of a silly/fun component to serve as an example for learning about custom components, […]
Creating a Custom Scroll Vanish Directive with Ionic Web Components
As I was scrolling through Twitter’s PWA (I assume this would be the same in their native application as well), I noticed that when you scroll down on a screen that has a “double toolbar” in the header: The top “toolbar” will animate off of the screen, leaving only the tab bar: This leaves more […]
The Ionic 4 Migration Survival Guide
The Ionic Framework 4.0.0 Beta is officially available! Make sure to check out the official documentation, but I’ve also got a whole lot of content for you to check out below as well. Although the alpha has technically been available for some time now for those who wanted to jump on board early, the official […]
Sending Push Notifications with the Phonegap Push Plugin in Capacitor
When it comes to accessing native functionality in Capacitor, we are generally able to use any of the thousands of existing plugins for Cordova. However, whilst most Cordova plugins will work fine without modification in Capacitor, not all of them will. One particularly popular Cordova plugin is Phonegap Plugin Push which allows you to register […]
Augmented Reality in an Ionic/Angular PWA
Recently, I published a tutorial on using ThreeJS with Ionic to embed virtual reality content into a mobile application using WebVR. This tutorial is going to be somewhat similar, we will still be making use of ThreeJS and WebGL, but we will be creating an augmented reality experience in an Ionic/Angular application. If you are […]
Using BehaviorSubject to Handle Asynchronous Loading in Ionic
It is common in Ionic applications (and Angular applications more broadly) to create some kind of service to handle loading data from some source. This might be from a local JSON file, local storage, a remote database, or some other kind of data store. The idea is that the service handles any of the complexities […]
Understanding How Slots are Used in Ionic 4
As you may know by now, the big change in Ionic 4 is that all of Ionic’s components are becoming web components. Since web components are a feature of browsers, and not of specific frameworks, this will allow Ionic to work with any framework or no framework at all. The basic idea behind Ionic’s components […]
Converting Ionic 3 Push/Pop Navigation to Angular Routing in Ionic 4
Most of the changes required for upgrading from Ionic 3 to Ionic 4 are going to be simple find and replace style changes – things like changing <button> to <ion-button> and ionViewDidLoad() to ngOnInit(). Although it will look slightly different, the code that you are using in Ionic 3 will more or less look the […]
Creating a WebVR Experience in an Ionic/Angular Application
I’ve become absolutely fascinated with WebVR recently. The fact that you can access an immersive virtual reality experience powered by a web browser on your mobile phone just blows my mind. I picked up a Google Pixel 2 XL and a Google Daydream headset to experience and develop for WebVR, which provides a nice and […]