Archive

In this tutorial we take a look at the newly CoreML Kit introduced at WWDC 2017. You can use it with Swift 4 & iOS11 onwards. Core ML allows you to use machine learning on your iPhone or iPad! You can either train it outside your phone & also train your machine leanings model on […]

XCode has a wide variety of shortcut and handy features that are often overlooked. Especially if you are an new developer, or independent developer you usually either accidentally discover these nuggets, or never know they are there. Lets look at the top 5 tips for XCode productivity, for both Swift and Objective-C development. XCode Tip […]

In this tutorial series we are going to look at building commonly used apps in Swift. The first one we are going to look at is building the YouTube app – this will be a several part series as there is quite alot involved. In this post we will look at setting up the basic […]

In one of our previous tutorials we looked at extensions. In this one we will look at how we can use these to setup a custom UIColor extension to do the following: Add set custom colors to our Swift project Initialize a UIColor from hex Initialize a UIColor from RGB First of all we have […]

Swift Extensions are quite a powerful feature and Swift and can greatly speed up your productivity. If you haven’t used them yet your in for a treat. What are Swift extensions? Extensions allow you to “extend” the functionality of an existing Swift class. It allows you to add custom methods to these classes which can […]

As you develop iOS apps you will use more and more features of the UIViewController. You will want code to run before the view shows to the user, after it shows and after it disappears. It’s important to understand the UIViewController lifecycle, and the following stages of it: viewDidLoad() viewWillAppear(_ animated: Bool) viewDidAppear(_ animated: Bool) […]

What are lazy vars, what do they do. Lazy sounds like a bad thing right? Lets first take a look at how variables work to then understand the benefits of lazy vars. What are lazy vars? When you declare a variable in Swift it takes up memory and also takes time to set the variable […]

Setting up an app to send an email from the user’s phone is simple. You can setup your app to open the mail app and fill out the To, CC, Subject and Mail Body fields with your own custom content. Then the user can send an email from the phone with all this filled out. […]

Most Mapping libraries such as Google Maps and Apple Maps show you where the user currently is and also allows you to get their coordinates. But what if you want to get the user’s location without using one of these libraries. You might want to save their location to a database, show app options based […]

In the last tutorial we covered the Model View Controller (MVC) design pattern in swift. Today we are going to look at the Model View View Model (MVVM), and how it works and why you would use it over MVC. What is MVVM? MVVM stands for Model-ViewModel-Model. The following diagram outlines how it works at […]