Advanced CloudKit (Part I): CKDatabase
CloudKit helps developers manage static data and almost every App needs some static data to function properly. By static data, I mean, non mutable data. Apps that use non mutable...
Tag Archives: iphone
UIAlertController: Alert and Action Sheet in iOS
In this tutorial, I will show you the new way to display an alert message to the user and associate user actions with that alert message in your iOS app....
CoreData Batch Updates in Swift
Core Data, one of the most important Cocoa frameworks, received new interesting functionalities in iOS 8 and OS X 10.10. Today, I am going to show you how to perform...
Singletons in Swift
In this post, I will demonstrate one particular way of creating singletons in Swift. But, before starting, let me just say: Swift is a very powerful programming language that allows...
Objective-C Selectors in Swift
I was building new exercises in Swift—Apple’s new development language—for our upcoming iOS training class in San Francisco, and when combining Swift and Cocoa Touch, I discovered something really interesting....
UIKit Dynamics, Core Animation Layers and Autolayout Constraints
Recently, we have been busy with interesting consulting work, and have not had a lot of time to write new blog posts. We appreciate the many emails, asking for more,...
Machine readable code reader in iOS
Apple’s introduction of the innovative Pass Kit and the Passbook, in 2012, provided developers with an expansive new range of applications. This interesting technology, however, was incomplete, as there was...
Will a fingerprint sensor be Apple’s next hit?
Some months ago, the press reported that AuthenTec was acquired by Apple. In the last few weeks, rumors on a fingerprint sensor embedded in the next iPhone generation have been...
Core Bluetooth for iOS
Core Bluetooth was introduced for the first time in iOS 5 to allow iOS devices to consume data provided by devices used in healthcare, sport/fitness, security, automation, entertainment, proximity and...
An introduction to Collection Views (UICollectionView)
One of the new UIKit components of iOS 6 is Collection Views. This is a new tool you can use to manage different views on the screen in a grid...
NSAttributedString for iOS using Interface Builder
Most of the things that I highlighted during the last post can be built easily with Interface Builder. I tried to replicate the example I showed in that post and...
Introduction to NSAttributedString for iOS
I’ve been talking a lot in the past about how to customize text in your app to improve the UI of your applications. You need to show some text in...
iNVASIVECODE goes Middle East
We are happy to announce that we are starting a new exciting business in Abu Dhabi (United Arab Emirates). We joined our new local partner, Immersive. This collaboration brings to...
Core Animation Replicator Layers
Let’s give a look at replicator layers. These are a special type of Core Animation layers that can be useful to create replicas of a generic layer and animate them...
iOSDevCamp 2012
We are pleased to announce our participation to iOSDevCamp 2012, the seventh not-for-profit iOS developer conference produced by the original iPhoneDevCamp all-volunteer team. We expect this to be the largest...
A (quasi-) real-time video processing on iOS with AVFoundation
In previous posts, I showed you how to create a custom camera using AVFoundation and how to process an image with the accelerate framework. Let’s now combine both results to...
Flags: very useful when debugging with Instruments
There is a very nice feature in Instruments that helps you to point your loupe to a very precise spot in your code. I am writing an app that process...
A very cool custom video camera with AVFoundation
AVFoundation is a very cool framework that allows you to collect multimedia data generated by different input sources (camera, microphone, etc.) and redirect them to any output destinations (screen, speakers,...
iOS image processing with the accelerate framework
Sometime ago, my friend John Fox asked me how to reproduce a blurring image effect in the iOS SDK. Core Image on the iOS does not provide that effect. You...
Container View Controllers
One of the new features provided by iOS 5 is the new way of combining view controllers in a custom hierarchy. From the previous versions of the iOS SDK, I...