The home of Objective-C Tutorials, Resources and Competitions for the iPhone Developer

Win a ticket to the 360iDev (2014) Conference

360idevholder About the event 360|iDev is the leading iPhone developer conference in the world. Our focus is to bring the best and brightest in the developer community together for 3 days of incredible sessions, awesome parties, good times, and learning. We were the first iPhone developer conference, and are regarded my many as the best. We focus not on marketing hype, or selling books, or anything like that. Our focus is the community. Helping new people get into the community, and ...

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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.

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Create falling objects in your iOS Application using NSTimer

xcode bomb image In this tutorial I will be showing you have to create a basic iPhone Application that has an object, in this case an image, which falls from the top of the screen at a random location.

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Auto-Indent Lines of code in Xcode.

Writing code can get messy, especially when you are copying and cutting bits here and there. This quick tip will allow you to clean up your Objective-C code in Xcode.

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How to apply distortions to a UIImage using OpenGL ES

GPUIImage Logo I’m going to show you how you can create effects like; dents, pinching, twisting, squashing, etc. on a UIImage using OpenGL ES as seen in the iPhone Application: PhotoTwist.

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How to create an Objective-C Delegate

iOS development tutorial Firstly, What is an Objective-C Delegate? Well.. An Objective-C delegate is just an object that has been assigned as a delegate of another. There’s no special process for creating them; you simply define a class that implements the delegate methods you’re interested in.

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