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Bite-sized screencasts on iOS and Mac development.

There are 15 episodes with tag 'uikit'   Clear search
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#265
265 3d touch preview interaction
Have you ever wanted to replicate the 3D Touch actions that are available in Mail.app? How do you make these custom interactions beyond the simple action sheet that you get out of the box? In this episode Conrad walks us through adding custom interaction using 3D Touch to a list building application.
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#262
262 peek and pop
Conrad Stoll shows us how to implement Peek and Pop using 3D Touch on supported devices. We learn how to do it in code versus the storyboard, as well as how to customize the display and presentation of the previewed view controller.
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#243
243 designing a custom download button part 2
Wrapping up our custom download button, this time we focus on the highlighted image and depressed state of the button, as well as transitioning to and from the progress layer.
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#242
242 designing a custom download button part 1
In this episode we create a custom control to serve as our download button. We start by creating a circular progress indicator using CAShapeLayer, then move on to subclassing UIControl to provide our image view and touch handling.
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#241
241 file downloads part 3
In this episode we take the download state and progress notifications and update the user interface to reflect this state. We'll see how to translate the notification into the indexPath for that episode row, and how to fake a change related to the fetched results controller to trigger a reload of the content. We will leverage the RateLimit library to save periodic changes in progress to the model without overwhelming Core Data.
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#240
240 file downloads part 2
In this episode we create a DownloadInfo model in CoreData in order to track the state of a download, separate from any view controller.
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#239
239 file downloads part 1
Downloading large files on iOS represents some unique challenges. Downloads should occur in the background, not confined to a particular view controller. They should be able to report progress on multiple screens, and should be robust enough to survive application suspension and failing network conditions, and respect the user's cellular data plan. In this episode we start a series on downloading large files that will cover all of the above concerns.
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#235
235 working with the pasteboard
In this episode we take a look at UIPasteboard, allowing us to inspect, copy, and paste content on the system pasteboard as well as your own custom pasteboards. We'll also look at adding multiple representations of the same item to be a better OS citizen, for instance by copying rich text alongside plain text.
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#234
234 universal links
Universal Links is a great feature that allows us to render content in an app when a user hits a known URL, instead of opening Safari. For content-based applications, this can be especially useful, as often records that exist on the web also exist in the app. We'll leverage our work from Episode 231 on Shared Web Credentials and extend the demo app to take advantage of Universal Links.
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#232
232 calculating spring velocity
UIView has an incredibly useful spring-based animation API, but it can be difficult to know what to use for the damping and initial spring velocity parameters. In this episode, we'll break down how to compute the velocity value using the values we get from our UIPanGestureRecognizer and a little math.
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#231
231 shared web credentials
In this episode we implement shared web credentials with a server, allowing users to automatically enter credentials in our app if they've already done so in Safari. We cover building a Sinatra app for our server, deployment to Heroku for free SSL and a unique domain, and adding the appropriate entitlements to our app.
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#227
227 lets build activity plus plus part 5
Continuing our series on building out our Activity++ clone, this time we hook up our application to HealthKit, displaying real data in the app from a device. We continue to use our wrapper type so that the application can still work in the simulator with randomized data, which also allows us to set up certain scenarios that we wish to test, such as streaks.
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#226
226 lets build activity plus plus part 4
In this episode we examine the scrolling performance of our activity ring views. We see that framerate suffers when scrolling quickly, then apply a few changes to bring scrolling performance back to 60 frames per second.
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#225
225 lets build activity plus plus part 3
This week we take our ring views and use them to create a collection view of rings, one for each day in an entire year.
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#223
223 lets create activity plus plus
Let‘s attempt to recreate Activity++, an application by _David Smith. The app features a number of interesting interface elements that would be interesting to try to build ourselves! In this part we'll start out by replicating the ring views for a given day.