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Making App Previews

Last year, at WWDC 2014, Apple presented a cool new way how we can show off our brilliant apps to an unsuspecting audience. After working on the official prod.ly app for the better part of 3 months, today I created and published my first app preview video. Here’s how.

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Tappable UILabel Hyperlinks

In the previous blog post of this series, I have demonstrated how to modify the way UILabel draws hyperlinks. In this article I am showing how to implement function to make the hyperlinks tappable.

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Customizing UILabel Hyperlinks

For the ProductLayer prod.ly app I wanted to show a timeline of user opines. Opines are – in spirit – similar to tweets and as such can also contain hyperlinks. In this post I am discussing how to customize hyperlink drawing for UILabels. In a second article on this subject I will then show how to implement tappable hyperlinks for UILabel as well.

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iPhone Downsizing

I admit it, I belong to the group of people who use their iPhone singlehandedly. That is, a single-thumb-typer. Also, I scoffed at the idea of a super-sized iPhone 6+. But I am somebody to apply the scientific method for examine the validity of your own beliefs. So I purchased and used an iPhone 6+ (Gold, 128 GB) for almost 2 months. Here’s my verdict as well as an intro do size classes.

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Dismissal Completion Handler

While working on an additional section for my book, I encountered a tricky situation. Pause for a moment and ponder how you would solve this: You present a modal view controller. Some action within it communicates via delegate to the presenting view controller and this dismisses it. You need to present a new modal view controller right after the first one has animated out.

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Development Pods

When integrating your own CocoaPods into your apps you often find some things you’d like to tweak in your component from within the app project/workspace. This would allow you to immediately test the fix in the context of the app. This blog explains how to work with Development Pods which allow you to do exactly that.

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Understanding OAuth 1.0a

Chapter 6 in my book deals with how to build a solid wrapper around a RESTful web service and how to unit-test it. I thought I had finished principal writing on my book when I handed in chapter 7, soon too appear in the Manning Early Access Program (MEAP) for readers who have preordered.

I walk you through implementing a wrapper – using NSURLSession – for searching for CDs on Discogs by scanned barcode. Until now the Discogs search API did not require any sort of authentication, which made it ideal for this example. Then a fateful email arrived on Friday, June 20th.

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Object Overlay on Video

We always welcome guest bloggers on Cocoanetics.com. This edition was prepared by Tejas Jasani and covers how to overlay objects on live video using Brad Larson’s GPUImage project.
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E-Mail Validation

For the ProductLayer sign-up form I wanted to make sure that the user can only send a sign up if the email address is valid. If you google for ways to validate an email address you most often solutions involving regular expressions. But since I don’t trust a RegEx unless I know it by heart, I implemented the validation with Apple’s own NSDataDetector for links.

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Forward Geocoding

There are two kinds of Geocoding which you might encounter: forward and reverse. The class doing that for you in iOS is CLGeocoder. It is both capable of doing it forward (from address to lat/long) and reverse (from geo coordinates to placemarks). For this tutorial we will build an app that lets you search for addresses and display the results individually on a map view.

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