Weekly bite-sized screencasts on iOS development.

Displaying Episode 221 - 240 of 261 in total

Authentication with AFNetworking

Episode #41 | 18 minutes | published on 11/08/2012
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Many APIs require some sort of authentication. In this episode, we explore the use of an API that authenticates with a username and password, and returns an authenticated token that has an expiration date. You'll see use of AFNetworking to deal with the request, attaching the authenticated token as an HTTP Header to outgoing requests, as well as the use of SSKeychain to abstract away the lower level Keychain API.

Shine Effect

Episode #40 | 10 minutes | published on 11/01/2012
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Creating an animated shine effect, similar to what you see on the slide to unlock screen on the iPhone. In this episode, I show how to achieve this effect with CALayers, layer masks, and a CABasicAnimation.

Smart JSON Parsing

Episode #39 | 18 minutes | published on 10/25/2012
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Parsing JSON responses into Objective-C Objects can be tedious. In this episode, we start development on a smart JSON parsing class that can alleviate some of the mundane work usually required for this functionality.

Class Introspection

Episode #38 | 18 minutes | published on 10/18/2012
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In this episode I create an application to introspect classes to list out methods and instance variables using Objective-C's runtime features. Bonus: Can you spot the memory leak?

Xcode Tips & Tricks

Episode #37 | 13 minutes | published on 10/11/2012
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In this episode I cover some of the Xcode tips & tricks that help me be effective. I cover many keyboard shortcuts for keeping my hands on the keyboard, as well as a couple of useful plugins for Xcode for Vim key bindings and picking colors.

Searching in UITableView

Episode #36 | 15 minutes | published on 10/04/2012
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Using UISearchDisplayController you can quickly add searching behavior to a UITableView. In this this episode we start off with a CoreData model of products, displayed in custom UITableViewCells and add search to filter the products in the table.

Autolayout Fun

Episode #35 | 13 minutes | published on 09/27/2012
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In this episode I dive into the complex world of auto layout. Autolayout is an important and powerful new layout system in iOS 6, but it definitely takes some practice to understand fully. Even after practicing this episode a few times I ran into a couple of snags, however I hope this intro to Autolayout provides useful.

Upgrading to iOS 6 and iPhone 5

Episode #34 | 7 minutes | published on 09/20/2012
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Now that iOS 6 is out, and the iPhone 5 is only a day away, it is important to update our applications to make sure there are no issues. In this episode, I convert a rudimentary application to support the taller screen of the iPhone 5 and support iOS 6.

Core Graphics: Polygons

Episode #33 | 14 minutes | published on 09/13/2012
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We continue our journey into Core Graphics. This week, we'll draw a polygon with a dynamic number of sides, learn how to use CGMutablePathRef, shadows, clipping paths, and a bit of math.

Core Graphics: Gradients

Episode #32 | 18 minutes | published on 09/06/2012
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Core Graphics is a complex topic, but can be very handy to create designs without using images, as well as maintaining resolution independence. In this episode I show how to create a couple of simple gradients using Core Graphics.

Posting Multi-part Forms with AFNetworking

Episode #31 | 31 minutes | published on 08/30/2012
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In this episode, I take an existing app and add the ability to post information to a server, including photo uploads. We report on the progress of the upload and configure AFNetworking to do a proper muliti-part HTTP form post. In addition, I cover how to build a standalone static TableViewController to represent a form using Storyboards.


Episode #30 | 17 minutes | published on 08/23/2012
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In this episode I build an app with Parse, a service that provides custom data storage, files, push notifications, a geolocation support.


Episode #29 | 18 minutes | published on 08/16/2012
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RubyMotion is a toolkit that allows you to write native iOS applications using Ruby. Normally I'm pretty skeptical of these alternative frameworks, but RubyMotion is actually quite interesting. In this episode I build a small application and talk about the pros & cons of using the toolkit.

Creating a Cocoapod

Episode #28 | 13 minutes | published on 08/09/2012
Free Video
In this episode, we'll create a CocoaPod out of the modal picker view component we created in episodes 25 & 26. We'll see how to tag & push our code to a github repository and create a podspec so that others can use this component in their projects.

New Objective-C Syntax

Episode #27 | 13 minutes | published on 08/02/2012
Free Video
The latest version of the LLVM compiler supports some excellent new syntax additions to the Objective-C language. In this episode, I cover what the new syntax is, how to use it, and a few caveats to look out for.

Building a Custom Picker Component - Part 2

Episode #26 | 13 minutes | published on 07/26/2012
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In this episode, I continue where I left of in episode 25. I add a nice animation to present & dismiss the picker, as well as a backdrop view that allows you to tap anywhere to cancel.

Building a Custom Picker Component

Episode #25 | 19 minutes | published on 07/19/2012
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In this episode, we'll talk about how to extract code from a view controller into a reusable component. We'll create a simple class that combines a UIPickerView with a toolbar for making quick selections from a small list of values. This ran a little long, so it is broken down into 2 parts.

Pull to Refresh

Episode #24 | 19 minutes | published on 07/12/2012
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In this episode, I cover how to implement Pull to Refresh on UITableView using an easy open source project called SSPullToRefresh, by Sam Soffes. I cover the basics, as well as creating a custom loading panel, drawn with Core Graphics.

Intro to Storyboards

Episode #23 | 30 minutes | published on 07/06/2012
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In this episode I dive into Storyboards to lay out view controllers and transitions. I start out by converting a blank slate project to use storyboards, then move on to transitions, dynamic table view prototype cells, and cover static table views at the end. It's a slightly longer video than normal, but if you haven't gotten into storyboards yet, this one's for you.

Customizing UITabBar

Episode #22 | 12 minutes | published on 06/28/2012
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In this episode, I continue deconstructing Foursquare's custom UI. This time I focus on how to customize the UITabBar with the iOS 5 customization APIs.