In this series I’ll show you how to create a simple Day Counter on iOS, using Objective-C and Xcode 9. The idea is to set a date in a settings screen, and then see how many days have elapsed on the main screen right after launching the app. Thi

Building a Day Counter on iOS – Part 2

Apr 4th, 2018 28m 54s

Building a Day Counter on iOS – Part 1

Mar 29th, 2018 19m 18s

How to present a view controller on top of a UISplitView Controller – Part 2

Dec 6th, 2015 12m 44s

The second part of this mini-series about presenting another UIViewController on top of a UISplitViewController in iOS 9 and Xcode 7. Check out the first part here, complete with code snippets and a link to the full project. Enjoy! Watch the fu

How to present a view controller on top of a UISplitView Controller – Part 1

Nov 30th, 2015 17m 17s

Since its introduction in iOS 5, our good friend the UISplitView Controller has always had a really annoying habit: it has to be the root view controller in our apps. This means that it cannot be presented from any other view controller, nor ca

Building a searchable UITableView in iOS 9 – Part 4

Nov 25th, 2015 11m 17s

In this final part of our project we’ll finish off the app by implementing a little Key Value Observation magic. This will let us update our second UITableViewController when new search results are to be displayed. Check out the first part here

Building a searchable UITableView in iOS 9 – Part 3

Nov 18th, 2015 7m 55s

In this part of our series we’ll take a look at how we actually filter the data that is displayed in the searchable table view. We do that using an NSPredicate. Check out the first part here, as well as a link to my demo project. Enjoy! Watch t

Building a searchable UITableView in iOS 9 – Part 2

Nov 11th, 2015 11m 29s

In the previous part we’ve setup our project and the relevant graphical bits to make the app display the table view. Now it’s time to implement the UISearchController object that will be at the heart of letting users sift through our search res

Building a searchable UITableView in iOS 9 – Part 1

Nov 5th, 2015 23m 25s

In this 4 part course I’ll show you how to build a searchable UITableView using iOS 9.1 and Xcode 7.1. Part 1 will talk you through how to build a UITableView with dummy data In Part 2 I’ll show you how to use a UISearchController to display a

How to load UIStoryboards depending on screen height in iOS

May 19th, 2015 19m 26s

A while ago I’ve written an article about how to load different storyboards depending on the screen size of an iOS device. Back in those days (2013) it was all a bit simpler than it is today, and I looked into it mainly because I loathed Auto L

How to build a UICollectionView in iOS 8

Feb 2nd, 2015 26m 55s

In this episode I’ll show you how to build a UICollectionView from scratch in Xcode 6. The class is available for both iPhone and iPad since iOS 6. If you know how to build a UITableView then building a UICollectionView will be familiar to you.

How to create an Unwind Segue in iOS 8

Jan 29th, 2015 19m 1s

The Unwind Segue was introduced in iOS 6 to make retrieving data from a dismissed view controller easier. A regular Segue allows us to send data from one view controller to another, but it’s not easy to bring data back if the user has changed o

How to speak Core Data

Jun 25th, 2014 26m 51s

In this episode core data I’ll talk you through the lingo of Core Data: those scary classes and expressions that you’ll frequently come across. In fact, this is the start of a new series: Core Data Nuggets are bite-sized chunks about the framew

Creating an In-App Purchase in iOS 7 – Part 6: Restoring

Jun 14th, 2014 8m 18s

And finally in the last part I’ll show you how to restore purchases. Note that you must implement a restore option for non-consumable products or the review team will reject your app. Demo Project You can download the full source code of what I

Creating an In-App Purchase in iOS 7 – Part 5: Testing

Jun 13th, 2014 17m 18s

In this part we’ll see our hard work comes to life on a real device while we’re performing our purchase in the App Store Sandbox. Demo Project You can download the full source code of what I’m building in this screencast on GitHub: https://gith

Creating an In-App Purchase in iOS 7 – Part 4: The Purchase

Jun 12th, 2014 3m 33s

Learn how to make the purchase in this part of our series about in-app purchases. Demo Project You can download the full source code of what I’m building in this screencast on GitHub: https://github.com/versluis/In-App-Purchases/ Further Readin

Creating an In-App Purchase in iOS 7 – Part 3: StoreKit Observer

Jun 11th, 2014 7m 53s

In this part we’ll setup the observers needed to react to responses from the App Store. Demo Project You can download the full source code of what I’m building in this screencast on GitHub: https://github.com/versluis/In-App-Purchases/ Further

Creating an In-App Purchase in iOS 7 – Part 2: Custom Shop Class

Jun 10th, 2014 19m 2s

In this part I’ll talk you through building a custom shop class and how to make “first contact” with the App Store. Demo Project You can download the full source code of what I’m building in this screencast on GitHub: https://github.com/verslui

Creating an In-App Purchase in iOS 7 – Part 1: Setup

Jun 9th, 2014 15m 29s

In this 7-part screencast series I’ll show you how to create an In-App Purchase in iOS 7 with Xcode 5.1. The course will run you through everything from setting up your product in iTunes Connect, creating a custom shop class for easy re-use, ma

How to use Popovers on iPad – Part 3: Image Picker

Jun 2nd, 2014 10m 38s

In this series I’ll show you how to create Popovers on iPad. They’re fairly easy to create once you get the hang of the inner workings of the UIPopoverController. I’ll show you how to create basic Popover in code and in your Storyboard, and we’

How to use Popovers on iPad – Part 2: Storyboard

Jun 1st, 2014 9m 19s

How to use Popovers on iPad – Part 1: Code

May 30th, 2014 21m 17s

How to convert your iPhone Storyboard into an iPad Storyboard

May 19th, 2014 8m 20s

Sometimes it’s just easier to start from an existing Storyboard rather than build everything again from scratch. Especially so when you want to create an iPad version of your iPhone app. When you change your deployment info to Universal, Xcode

iCloud in your iOS Apps – Part 5: Initial Import Hack

May 16th, 2014 7m 21s

In this final part of the series I’ll let you in on a little secret that will help our app synchronise iCloud Core Data for the first time when it’s installed on another device. Some devices it appears don’t display existing iCloud results upon

iCloud in your iOS Apps – Part 4: iCloud and Core Data

May 15th, 2014 32m 13s

In this part we’ll talk about how to make your Core Data powered app work with iCloud. This involves adding an option to your persistent store coordinator which will allow Core Data to write log files to iCloud. When changes are detected, the l