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Bite-sized screencasts on iOS and Mac development.

Displaying Episode 97 - 120 of 307 in total
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#211
211 indenting text with text kit
Sam joins us again to cover how to change text layout dynamically as you type. He will implement a feature common in Markdown editors where typing dash followed by a space indents the list. In the process you'll learn about more of the Text Kit API. If you've ever wondered what type of work goes into building a text editor, this episode is for you!
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#210
210 cool text effects 2
Continuing on from last time, we take our glyph layers and apply Core Animation, providing for some interesting effects including animating the stroke of each glyph path and applying a typing effect with transforms.
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#209
209 cool text effects
In this episode we dive deeper into the text system, leveraging CoreText to compute exact metrics about each glyph in a string. We can use this information to do interesting things with text. There's a lot of code in this one, but you'll learn the basic foundations of text, how CoreText works, and how to extract metrics and paths from your rendered text. We'll use this in a future episode to implement some interesting effects!
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#208
208 syntax highlighting with textkit
In this episode Sam Soffes joins us again to show how to implement some rudimentary syntax highlighting of text while you type using TextKit. This builds on the concepts we learned in episode 207, so start there first!
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#207
207 intro to text kit
In this episode Sam Soffes walks us through the basic components of TextKit, a framework that allows complete control over the text layout and rendering system on iOS and OS X. TextKit is a complex topic, but with it brings a lot of power. This episode will cover the basics that we can build upon in future episodes.
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#206
206 more tableview customization
In this episode we continue with our Starcraft II Guide application, this time focusing on using a table view to edit a model. We leverage a cell with a text field, a cell to select data from another view controller, and a section that is only editable/reorderable with itself.
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#205
205 tableview customization
In this episode I take a stock UITableView and UINavigationController and customize their appearance to match a design for a Starcraft II companion app. We'll leverage Swift enums to capture colors & fonts so we can reuse them in multiple places. We will also utilize the UIAppearance API to style all instances of a UINavigationBar, and get rid of UITableViewCell's default separator indentation.
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#204
204 json api client part 2
In this episode we start writing an application-specific API Client. We use Argo to decode our JSON response into an Episode model, including some nested object decoding, date formatting, and wrap it up by testing the implementation to make sure it works.
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#203
203 json api client
In this episode I start creating a reusable api client that will make it a lot easier to consume a JSON api and convert the response into model objects. It uses Argo for the JSON parsing, and leverages Swift features to provide a rich callback for the API calls.
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#202
202 building a watchkit complication
In this episode we are joined again by Conrad Stoll
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#201
201 building a watchkit glance
In this episode Conrad Stoll joins us once again to extend the watchOS 2 app to include glance, indicating to us when our beer will be ready. He leverages a new timer class that allows you to accurately display a countdown (or count up) timer that runs completely on the watch.
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#200
200 watchkit app
In this episode we are joined by Conrad Stoll who shows us how to build a watchOS 2 app to order beer. Data is synchronized from an iOS app, and the digital crown is used to make selections.
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#199
199 nsstv part 2 icons and artwork
In this episode we use Sketch to export top shelf artwork and layered icons for tvOS. We then preview the layered artwork using the Parallax Previewer tool. We then add these to our asset catalog in Xcode to add them to our application.
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#198
198 nsstv part1 project setup
In this episode we start a new series on building the NSScreencast tvOS application. We'll start off by creating the Xcode project, initialize our Gemfile and Podfile for dependencies, as well as talk about a few ways of getting around issues where a 3rd party library doesn't indicate that it supports tvOS yet.
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#197
197 mastering tv focus
In this episode we take a deep look at how focus works with tvOS. We learn how to use UIFocusGuide to redirect focus when the engine cannot find an appropriate element to focus. We also learn some debugging tricks on how to visualize focus moves using Quick Look, and how to use _whyIsThisNotFocusable to troubleshoot lack of focus. Finally we'll learn about custom focus animations and layered images.
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#196
196 careplicatorlayer
In this episode we take our missile animation from last time and update it to use CAAnimations. Using these animations we can add a wiggle, along with a small oscillating rotation to give a little life to the missile. Then we utilize CAReplicatorLayer to have them fan out and fire in slightly different directions.
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#195
195 intro to apple tv
In this episode we dive into tvOS, creating a spaceship dashboard application, complete with animated rockets and a crew list. Ludicrous speed, go!
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#194
194 modeling api endpoints
In this episode we talk about modeling API Endpoints as first class types, rather than relying on strings and string interpolation scattered across your application. For this we'll leverage Swift enums with associated values.
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#193
193 in app search
In this episode we take a look at how to provide deep search in our iOS applications. We start by leveraging NSUserActivity to provide relevant search results for recent activities to users. Then we look at how to customize the search results with rich metadata. Finally we look at using CoreSpotlight to fully index the content to make it available for search after we launch our app.
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#192
192 handoff alt
Supporting Handoff in your iOS / Mac applications can really delight users. In this episode we will build handoff support into an application so that users can continue their task on the web, or in a separate Mac application that is registered to handle that task.
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#191
191 swift 2 optionals poster
In this free episode, we take a look at a core Swift 2 feature: Optionals. Unlike Objective-C, where nil is considered a no-op, in Swift nil is specifically recognized by the compiler, which forces you to handle cases where nil might be present in a variable.
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#190
190 custom url protocols
In this episode we look at how to create a custom NSURLProtocol to intercept and alter a network request. This can be useful to provide application-wide interception & logging of network requests, alter requests to change parameters or add authentication, sign requests, or to handle custom url schemes.
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#189
189 swift 2 functions and extensions
In this free episode, Ben explores Swift 2 functions, how argument labels work, returning tuples, the guard clause, as well as extending behavior on core types.
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#188
188 app transport security
In this episode we take a look at App Transport Security, which contains new secure-by-default behavior for NSURLSession, NSURLConnection, or any other CFNetwork-based API. We'll see how to diagnose ATS errors, what the recommended settings are, and how to relax the requirements if needed to allow our network connections to be made.