Memory Management in Swift: Understanding Strong, Weak and Unowned References
Behind all the coding that we are doing, you probably have noticed some of your variables with the reference of strong, weak or unowned when writing your codes. What do they really mean? Does it make your variable stronger by...
Design Patterns in Swift #3: Facade and Adapter
This tutorial is the third installment in our series on design patterns. I started this series with a tutorial examining two examples of patterns in the “creational” category: factory method and singleton. I then...
UI Test Automation: Speed Up Mobile App UI Testing with Appium
At the time when you are reading this tutorial, millions, or billions of other users out there are probably browsing through an app on their smartphones. Having a smartphone with a huge collection of apps has already been an...
ARKit 2.0 Tutorial: Saving and Restoring World-mapping Data to Create a Persistence AR Experience
Welcome to the eighth installment of our ARKit tutorial series. Starting from iOS 12, ARKit has the capability to persist world mapping data. In the past, you can’t save the AR world mapping data. iOS 12 has given...
Design Patterns in Swift #2: Observer and Memento
This tutorial is the second installment in an AppCoda series on design patterns started last week. There are 23 classic software development design patterns probably first identified, collected, and explained all in one place by...
Creating a Prisma-like App with Core ML, Style Transfer and Turi Create
If you’ve been following Apple’s announcements from the past year, you know that they are heavily invested in machine learning. Ever since they introduced Core ML last year at WWDC 2017, there are tons of apps which...
Design Patterns in Swift #1: Factory Method and Singleton
There are 23 classic software development design patterns probably first identified, collected, and explained all in one place by the “Gang of Four” (“GoF”), Erich Gamma, Richard Helm, Ralph Johnson, and...
An Introduction to AR Quick Look in iOS 12
At WWDC 2018, Apple released ARKit 2.0 with a slew of brand new APIs and features for Augmented Reality Development. One of these features was an addition to their Quick Look APIs. If you’re not familiar with what Quick...
Introduction to Siri Shortcuts in iOS 12
At WWDC 2018 in San Jose, Apple announced Siri Shortcuts, a long-awaited feature which empowers developers to extend and augment the capabilities of Siri within their own apps. Previously, the SiriKit SDK was quite limited in its...
New in iOS 12: Adding a Custom UI and Interactivity in Local and Push Notifications
If you look at Apple’s “What’s New in iOS” 12 page, you’ll find a section entitled “Interactive Controls in Notifications,” which exclaims: Notification content app extensions now support user...