iOS-Blog

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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Creating a Custom Rotation Gesture Recognizer for iOS Apps

Any developer with aspirations of creating a killer app will almost certainly expand the UI beyond the standard offerings provided by Apple. While the standard API is functional and fairly complete, the intense competition in the App Store requires the user experience (UX) to be exceptional, highly attractive, and immediately intuitive. Even with beautiful graphics, the touch interface needs to be flawless and instinctive, which often times requires extending the standard touch gestures. The standard Apple API class UIGestureRecognizer supports ...

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Storing Data with NSUserDefaults

How can you store data between application launches? There are plenty of ways, but here I will show you the simplest, NSUserDefaults.

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Set a background image in your iOS Application

This is a quick iOS Development tip that will show you two different ways that you can set the background image of you application

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NSDictionary – Objective-C Class Reference

Have you had a collection of objects that you want to by name? Lets say you had an object that contains contact info for a person. If I wanted to see the contact information for somebody, I’d want to just tell something, “Hey, give me Jimmy’s contact info”, and it would get it for me. That is exactly what NSDictionary does for you. NSDictionary is way to perform easy lookups for objects stored in the dictionary, via a key of ...

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Objective-C: Validate e-mail address

This Quick iOS Development tip is a piece of code that I use regularly to validate an email address.

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Objective-C: Property Attribute Reference Guide

This tutorial is intended to be a reference guide to the property attributes found in the iOS development programming language Objective-C.

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How to create rounded avatars in your iOS Application

Rounded avatars seem to be very fashionable these days. Even Apple adopted the rounded images for contacts. If you’re wondering how to achieve this in your app here is the answer.

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