Logomark
A shot of to go with your morning coffee.

Curious? Get 3 great screencasts FREE.

Xom Venmo Tb Eyefi Twg Medium

Thousands of developers use NSScreencast to stay on top of iOS development.

Video Training for iOS Developers

The iOS landscape is large and changes often. With short, bite-sized videos released on a steady schedule, NSScreencast helps keep you continually up to date.

  • Quality content This isn't Youtube. Each screencast is carefully produced in HD quality.
  • Team Plans Get access for your whole team. NSScreencast makes for great lunch & learns.
  • Any Device Stream on the web, or use one of our apps for  tv, iPhone, and iPad.
Why NSScreencast?

Founded in 2012, NSScreencast has been releasing a new screencast each week for more than 5 years. With short videos you can learn a lot over time without a huge time commitment.

NSScreencast offers the largest collection of iOS development screencasts on the internet. With the range of videos that NSScreencast offers, there is something for people of every skill level.

Bite-sized screencasts on iOS and Mac development.

Displaying Episode 217 - 240 of 299 in total
#83
083 tdd view controllers part 2
We continue our TDD exercise, building a view controller one test at a time using Specta and OCMock. This time we introduce the alert view behavior for invalid logins, performing a segue for valid logins, and capturing arguments passed to mocks in order to affect the system, all in tests.
#82
082 tdd view controllers with specta and ocmock
In this episode I cover test driving a UIViewController using Specta and OCMock. We'll first talk about how to verify that your storyboard is wired up correctly with all outlets & actions and then talk about how to isolate the view controller from other dependencies using mock objects.
#81
081 associated storage
In this episode I add a block-based tap handler to UIButton, and discovering the limitation that categories can't define ivars or properties. To fix this, we use the objective-c runtime to add associated object storage. We also identify a block retain cycle and discuss a fix.
#80
080 paint code
In this episode I cover a really interesting & powerful tool called PaintCode. With this vector-based drawing app you can export your artwork as Core Graphics source code.
#79
079 sketch poster 1280
In this episode I take a break from code to show off a powerful vector drawing program called Sketch. I show off some Sketch basics, create a simple (yet cheesy) cloud icon, and show how Sketch can be used to design mockups or full-fledged designs.
#78
077 tdd money with specta and expecta poster 1280
In part 2 we continue our Money example. We start by adding the ability to add 2 Moneys of the same currency, then extract the concept of Expressions in order to defer conversion until the very end.
#77
077 tdd money with specta and expecta poster 1280
In this episode I walk through Kent Beck's Money example from his book, Test Driven Development by example. We'll start off by setting up to use Specta & Expecta for our tests, and then drive out an implementation test-first. We'll see opportunities for refactoring and use our tests to guide us.
#76
076 extracting data from strings poster 1280
In this episode I cover a few techniques on how to pull information out of strings. We start of by using regular expressions via NSRegularExpression, then take a look at NSDataDetector, and wrap up by examining the lexical structure of sentences using NSLinguisticTagger.
#75
075 a tale of uiscrollview customization poster 1280
In this episode I attempt to implement a custom scroll view behavior, where a table view can grow while scrolling to eventually encompass the entire screen. The implementation, while mostly functional, has drawbacks and the code is complicated. After taking a break, I approach the problem anew, and implement it much cleaner.
#74
074 oauth2 poster 1280
In this episode we cover how to authenticate with an OAuth2 provider for user authentication. As an example, we authenticate with Instagram using the Client Profile, which is most suited to a mobile application.
#73
073 ssl pinning poster 1280
In this episode I show how you can self-sign a certificate in Charles to inspect and modify requests & responses to an API. Using a technique called SSL Pinning, we can prevent this type of man in the middle attack and make our applications more secure.
#72
072 objective c collections poster 1280
Choosing the appropriate collection for your use case is important, not only for ease of implementation but for performance. In this episode, we'll examine the performance characteristics of various collections such as NSSet, NSArray, NSOrderedSet, and NSDictionary.
#71
071 nsnumberformatter poster 1280
In this episode I take a look at NSNumberFormatter, which is a useful class for getting various string representations of numbers. We then use this to add live number formatting to a UITextField.
#70
070 autolayout with cells poster 1280
Autolayout can be very powerful tool to provide layouts that are responsive to changes. In this episode we'll visit a case with UITableViewCells that makes using auto-layout somewhat frustrating, where constraints are applied to the cell itself instead of the cell's contentView.
#69
069 nsfetchedresultscontroller poster 1280
In this episode we take a look at how to correctly detect & respond to underlying changes in an NSManagedObjectContext and insert, update, move, and remove UITableView rows with the proper animations.
#68
068 xcode project templates poster 1280
In this episode we dive into the undocumented world of Xcode project templates. By studying the existing templates, we can learn how to make our own templates that better match our style or needs.
#67
067 map overlays poster 1280
In this episode we take the shape file data we parsed in episode 66 and use it to draw outlines around US States. We do this using the MKPolygon overlay in combination with MKPolygonView, which allows us to fill & stroke the provided vertices.
#66
066 processing shape files poster 1280
In this episode I cover how to parse ESRI Shapefiles and their DBF attribute counterparts, in order to get a list of vertices of US State boundaries. This episode covers interacting with a C library (shapelib). The data extracted will be useful in the next episode.
#65
065 alcatraz poster 1280
In this short episode I quickly cover the Alcatraz Package Manager for Xcode, which allows you to easily install many user contributed plugins and color shemes in Xcode.
#64
064 mapkit annotations poster 1280
In this episode I continue our WhatsAround sample from Episode 63. Using the Foursquare API, we fetch coffee shops near the user's location and display a pin on the map for each using the MKAnnotation protocol.
#63
063 from scratch poster 1280
In this episode I go over how I typically start new projects. I start off when an empty app template, do a bit of organization with groups to keep things tidy, introduce CocoaPods and a workspace, and wrap it up by setting up a map view controller using Storyboards on both the iPhone and the iPad. This project will be handy to use as a base for future episodes.
#62
062 mailing logs poster 1280
In this episode we continue with our example from last week's logging episode, and discuss how you can retrieve your logs out in the field. We use a pod called SSZipArchive to zip up the files as well as MFMailComposeViewController to enable testers to send us detailed logs of what is happening in the app.
#61
061 cocoa lumberjack
In this episode we take a look at a fast & flexible alternative logging framework for iOS called Cocoa Lumberjack. We take a look at the various loggers that are available and how to write logs to a file.
Shape
#60
060 windows azure mobile services part 2 poster@2x
We continue with our example chat application here and add the ability post a message, poll for updates, and receive push notifications. This episode utilizes a pod calles MessagesTableView controller to present an SMS like interface for the messages.