Objective-C / Swift Tutorials, Resources and Competitions for the iPhone Developer

Create an Asynchronous URL connection as an NSOperation

Recently I read a that showed the disassembly of +[NSURLConnection sendAsynchronousRequest:queue:completionHandler:] mainly as a simple call to +[NSURLConnection sendSynchronousRequest:returningResponse:error:] dispatched on a global queue.

Read Full Article

Ruby-like nil messaging in Objective-C

iOS development tutorial with ruby Nil messaging in Objective-C has a fairly well document behavior. In brief, messaging nil has no effect and the return value from a message sent to nil is discussed in the Programming with Objective-C

Read Full Article

iOS 7 in-line UIDatePicker – Part 1

One of the new features in iOS 7 is the in-line UIDatePicker. You might have noticed in the Calendar app or in the Reminder app that when you want to select a date for your event, instead of seeing the UIDatePicker come up from the bottom of the screen like the keyboard, now you see it below the cell that contains the date. This is how it looks like in the Calendar app: Today we are going to see how ...

Read Full Article

iOS 7 Interactive Transitions

It’s been a while and after some long due time off I’m finally back with a new iOS tutorial. I wanted to add some more details to my showing you how to implement an interactive transition and that’s exactly what I’m going to do with this article! This shows a preview of what we’re going to create and here you can find the source code used for this tutorial. Interactive vs Animated transition The main difference between these two ways ...

Read Full Article

iOS 7: how to use UIGravityBehavior tutorial

xcode bomb image iOS 7 provides us with some new and exciting functions in the UIKit Dynamics classes set. This tutorial will show you how to create a falling object in your iOS Application using the iOS 7 UIGravityBehavior.

Read Full Article

1 6 7 8 9 10 23