Contributed Tutorials

Working with iOS 8 Handoff Part 2: Using Continuation Streams

In my last tutorial we met for first time the Handoff capability that was introduced in iOS 8.0. With it, an activity that is started in one iOS device can be continued to another from the point that was left off. Also, an activity can be continued on a Mac too, as long as the…
Working with Handoff in iOS 8

I am going to start this tutorial with the following wonderful scenario: Imagine that you are working with an application in your Mac, and then you decide to continue in your iPad while lying on your couch in your living room. After a while, you’re leaving home, but you keep working on the same application…
Working with Localization in iOS 8 and Xcode 6

One of the greatest concerns of all developers is whether their applications will be accepted and used by a big audience. It’s a fact that the bigger that audience is, the more sales or downloads will be achieved, resulting to applications that sit at the top of the rankings and of course, applications that make…
Building an RSS Reader Using UISplitViewController and UIPopoverViewController

Just a few weeks ago Apple introduced the new iPhone devices, the iPhone 6 and iPhone 6 Plus. As we all saw, the screen sizes are bigger than all the older iPhone screens, meaning that any new applications must be build in that way so they work on all devices. Even more, if we consider…
Working with Touch ID API in iOS 8 SDK

With every major version release of iOS, Apple ships along a great number of new technologies and frameworks. iOS 8 is going to be released officially pretty soon, and new great stuff awaits both users and developers. This version of iOS brings quite exciting new things, and among them, don’t forget the new programming language…
Using Gesture Recognizers to Handle Pinch, Rotate, Pan, Swipe and Tap Gestures

Hello readers! iOS 8 is at the gates, as only a few weeks remain until the official release of the updated version of the operating system, and along with it, the release of the Swift programming language. So, as you understand, we are preparing to enter into a new era of the iOS SDK, where…
Understanding Key-Value Observing and Coding

In programming, one of the most commonly accepted facts is that the flow of a program depends on the value of the various variables and properties you use. You just have to think how many times during an application development you have to check for your properties’ values, and based on them to drive the…
Understanding XML and JSON Parsing in iOS Programming

One of the most important tasks that a developer has to deal with when creating applications is the data handing and manipulation. Data can be expressed in many different formats, and mastering at least the most known of them consists of a key ability for every single programmer. Speaking for mobile applications specifically now, it’s…
How to Use SQLite to Manage Data in iOS Apps

Among the numerous applications existing on the App Store today, it would be hard for someone to find more than a few of them that do not deal with data. Most of the apps handle some sort of data, no matter in what format they are, and always perform some actions upon it. There are…
Using iAd to Display Banner Ad in Your App

So, you are about to start developing the next super app, you have everything planned and designed, but there’s still one last thing you haven’t made your mind up about; how to make some earnings out of it! Well, there are two options apart from offering it completely free: Either to make it a paid…