Getting started guides, How-to's, and in-depth explanation of various topics in software development.
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In this tutorial I will show how to use iBeacon - Apple's indoor proximity system. We're going to build a treasure hunt where the iPad acts as the treasure and the iPhone acts as the hunter which tells you when you're getting warmer. If you want to following along with this tutorial the [is availableRead more
With an increasing number of apps in the App Store, a major challenge for App Developers is how to get their application noticed. Traditionally, developers have turned to advertising, spending their hard earned cash on in-app and mobile advertising to drive demand. In recent years though, cost effectiveRead more
What is ReactiveCocoa ReactiveCocoa is an FRP framework for iOS, consisting of several components that let developers write code in a declarative manner rather than imperative. The main idea behind FRP is to represent program flow as sequences of events. With the help of powerful functional programmingRead more
Creating an iPhone video chat app isn't rocket science, but there are a lot of intricacies to account for. This tutorial covers the entire purpose of developing such an app from start to finish. It is quite long, so you might want to bookmark it so you can revisit it later. The end result: The entireRead more
Apps become a lot more interesting when we connect them to the internet. They’re able to fetch live data, update that data, and interact with other people and devices. In this post, we’ll look at how to pull data from the internet. We’ll be working with JSON data. JSON, which standsRead more
Core Data This post will explore the depths of the Core Data API. Core Data is a technology that manages a complex SQL database, and wraps the C function calls into an object-oriented framework that is much easier to use. This database structure allows you to store complex data objects, and a lot ofRead more
Persistence is the ability to save files and content to disk, so that you can read it out later and be able to save stuff. Most apps use persistence of some sort; even if your app doesn’t create files, you may still have settings and configurations you want to save. iOS provides a number of formatsRead more
In this last section, we will combine the drawing abilities of Quartz with the blazing fast animations that are provided by Core Animation. Core Animation Primer Core Animation is a framework for animating a number of properties on views. It was introduced with OS X 10.5 (Leopard) and iPhone OS 3.0.Read more
This section will continue from where we left off last week. We’ll work with solid fills, gradient fills, and image and pattern fills. Open up the project from last week, and let’s get started. Navigate to CustomView.m Single Color Fills In the last section we filled our paths with solidRead more
A lot of Xcode projects require you to add additional frameworks to link against. Here’s how: Select the main project listing in the left column. Select Build Phases from the tabs near the top. Click the ‘+’ button in the “Link Binary With Libraries” section (you mayRead more