RESTful API Tutorial: How to Upload Files to a Server
Welcome to a new, hopefully exciting tutorial! In a previous post I showed to you the process of creating a custom class that manages web requests and RESTful APIs. Today, we will keep building on it, as I would like to focus on...
Advanced Animations with UIViewPropertyAnimator
Animations are cool. They are an important part of iOS Human Interface Guidelines. Animations help you to draw user’s attention to important things or just add some fun to your app. There are few ways to implement animations in...
How to Resolve “Couldn’t instantiate class named WKWebView” Error When Using WebKit
I got a question from a reader about the following error when using WKWebView in storyboard: Could not instantiate class named WKWebView because no class named WKWebView was found; the class needs to be defined in source code or...
How USDZ Enables New Experiences for ARKit
At WWDC 2018, Apple announced various improvements to its support for Augmented Reality experiences and one of those was the support of a new file format, USDZ. USDZ enables new experiences and adds new ways in which users can...
How to Add Apple Pencil Support to your iPad Apps
In October 2018, Apple announced the brand new iPad Pro and the all-new Apple Pencil 2.0. Unlike the previous generation of the Apple Pencil, this utensil offers developers some extra fun APIs to play around with in order to...
RESTful APIs Tutorial: Creating Your Own Lightweight REST Library in Swift
Most applications nowadays communicate with servers to exchange data, and they do so by consuming RESTful APIs, also called RESTful web services. Using REST, applications can send requests to servers, and servers send responses...
How to Use Git Pull Requests to Improve Code Quality and Developer Participation
Today, we’ll talk about a feature of several well-known Git tools that I prefer to call a “merge request,” but tends often to be referred to as a “pull request,” for example, on sites like GitHub and...
Using Google Cloud Translation API to Power Your App with Instant Translation
One of the several services and APIs that developers can use from Google is the Cloud Translation API, which offers the ability to perform machine learning (ML) based translations of any string into any supported language. The...
Passing Data in iOS: Delegates, Notifications, and Closures
Long time no see dear readers and Appcoda fans! It’s been a long time since my last post here at Appcoda, and I am really glad to be back! Today, I’m going to discuss about an important and definitely interesting...
Building a Trello-like iOS App with Drag & Drop API
Drag & Drop is the user interaction that works naturally when we want to build an app where user can move data around the screen. It’s being used heavily by apps like Trello, Jira, and many others to move data between boards....