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Bite-sized videos on iOS development.

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.

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Steven Tolton

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Foster Bass

Got tired of dead-end googling so I checked to see if @NSScreencast had covered what I was looking for. Of course he had, 4 years ago. Should have checked there first.

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Sam Soffes

Seriously great stuff even for seasoned developers. I’ve learned a good amount from Ben’s videos.

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Showing episodes 169 - 192 of 573 in total
  • Audio Playback

    #405

    Making a Podcast App From Scratch

    In this episode we implement one of the core functions of a podcast player: playing audio! Using AVPlayer we load up the track and observe its progress so we can update the UI to reflect time progressed, time remaining, as well as allowing the user to scrub to a position in the track.

  • Player Screen

    #404

    Making a Podcast App From Scratch

    We've spent a lot of time dealing with the data, networking, architecture, and overall theme of our podcast app, but we haven't yet written a player! So in this episode we start the process of designing our player screen. We'll start by adding all of the controls and views to our PlayerViewController, wire everything up, and customize the look & feel to match our Sketch design.

  • Setting up Core Data to Save Subscriptions

    #403

    Making a Podcast App From Scratch

    In this episode we set up a Core Data model for persisting podcast subscriptions. We'll cover the various ways Xcode generates model classes for us and work on saving and loading podcast subscriptions so that the subscribe button behaves as it should.

  • Polish and Cleanup

    #402

    Making a Podcast App From Scratch

    We have some housekeeping to do in this episode. We also want to add a little polish to the podcast detail screen so that it doesn't resemble a stock table view driven app. We also need to clean up the data model a bit in preparation for persistence, and we also want to remove the pesky html tags that show up on the podcast and episode descriptions.

  • Adding Episode Cells

    #401

    Making a Podcast App From Scratch

    In this episode we extract episode information from the podcast feed and render them as cells on the podcast detail screen.

  • SwiftUI Gestures

    #400

    Attaching gestures works quite a bit differently in SwiftUI than in UIKit. In this episode we will look at the @DragGesture property wrapper and how we can use gestures to update custom state that we can then use to transform our UI.

  • SwiftUI Transforms and Animations

    #399

    SwiftUI's declarative nature makes building UIs incredibly easy. In this episode we will build a wallet UI with cards. We will create a CardView so we can reuse it in multiple places. Then we will use transforms to alter it's size and position. Finally we will see how declarative animations work as we expand the cards apart.

  • Refactoring to a Data Manager

    #398

    Making a Podcast App From Scratch

    In this episode we clean up some autolayout warnings, implement some changes to support dynamic text, then move our attention to presenting the podcast detail screen when tapping on search results. Since the data is coming from various places we introduce a Data Manager to move that responsibility out of the view controller.

  • Tip Calculator in SwiftUI

    #397

    Now that we've seen a taste of SwiftUI, let's dive into a real example and build an app. We'll have a first look at @State variables we can use to creating a binding between our state and our UI, and we'll run into a few puzzling errors and see how we can coax Xcode into giving us the right error message.

  • Hello, SwiftUI!

    #396

    Back from WWDC 19 and blown away by the announcements. There's a lot to cover, but we'll start by digging into the most exciting announcement: SwiftUI. This is going to change everything...

  • Decoding Heterogeneous Arrays

    #395

    You may encounter a scenario where you want to decode some JSON that contains an array of objects that may be of a different type. In this episode we examine such a scenario, where we have a feed that contains an array of posts, but each post object can be of a different kind, such as text, image, or video. We will take a look at how to solve this by introducing a protocol called DecodableClassFamily, and along with a Discriminator that will inform the decoding logic which type it should decode. We'll then take this working example and make a reusable solution using Swift Generics.

  • Making a Custom Subscribe Button

    #394

    Making a Podcast App From Scratch

    In this episode we customize our call-to-action Subscribe button. Using @IBDesignable and Interface Builder we can preview how it looks in the various button states without having to recompile and run in the simulator every time.

  • Padded Label and Separator View

    #393

    Making a Podcast App From Scratch

    In this episode we create some more custom @IBDesignable views, this time for a padded genre label where we use the intrinsicContentSize to make a label take up more space and give itself a little padding. We also create a separator view that draws a thin line to separate sections visually.

  • Custom Gradient Background

    #392

    Making a Podcast App From Scratch

    In this episode we create a custom UIView subclass that draws a gradient overlay. This allows us to overlap the podcast information above the artwork slightly.

  • Podcast Detail Screen

    #391

    Making a Podcast App From Scratch

    In this episode we start laying out the Podcast Detail screen. We'll start by using an embedded view controller for the header portion, which contains all of the top-level information about the podcast. We'll then see how we can utilize this child view controller to contain all of our outlets and how to pass data from the parent view controller to the child.

  • Parsing RSS and Atom Feeds

    #390

    Making a Podcast App From Scratch

    To get the information we need for the Podcast Detail screen, we’ll have to get the feed URL and parse it. There’s no built-in Codable support for XML, so we’ll look at using FeedKit to parse the feeds and extract the relevant information we need.

  • Displaying Search Results and Recommendations

    #389

    Making a Podcast App From Scratch

    In this episode we build another API client to search for podcasts matching a term and customize the UI and behavior of the search bar. We display the recommended podcasts first, then when a user types in a term we show the matching podcasts from the iTunes API.

  • Parsing JSON into Models

    #388

    Making a Podcast App From Scratch

    In this episode we take the response from the top podcasts feed and decode the JSON into models using Codable.

  • Creating an API Client

    #387

    Making a Podcast App From Scratch

    It's time to start talking to external APIs to get the data we want to display in the app. We start by exploring the API we want to consume with Paw, a useful macOS app. We then create a simple API client class that abstracts most of the boilerplate logic around how to handle the various URLSession outcomes.

  • Working with Remote Images

    #386

    Making a Podcast App From Scratch

    Working with images from the network is such a common task in iOS development. In this episode we'll cover a useful library called Kingfisher, which gives you a simple API for downloading and caching images from the network. We also look at two ways for configuring our image view, one using User-Defined Runtime Attributes and the other by using awakeFromNib in code.

  • Styling Custom Cells

    #385

    Making a Podcast App From Scratch

    In this episode we add our tableview cell styling to match the design, using autolayout to arrange the views and using the Xcode View Debugger to find and fix a visual glitch when using dark background cells.

  • Reusable Views

    #384

    Making a Podcast App From Scratch

    In this episode we start building our first table view cells. We then build a protocol to represent Reusable Views, such as UITableViewCells. With this protocol you can supply a simple type reference and the reuse identifier and casting happens for you. Leveraging Swift's protocol extensions allows you to leverage your conventions to write cleaner, safer code.

  • Storyboard References

    #383

    Making a Podcast App From Scratch

    We start out by creating our first view controller (Search) by creating some structure to keep things organized by logical function (rather than by subclass) and create a storyboard to hold each tab. The main storyboard then uses Storyboard References to keep things tidy.

  • New Project Setup & Theming

    #382

    Making a Podcast App From Scratch

    We start from a blank project template, then add our first storyboard and tab bar controller. We also introduce a mechanism for skinning the app with a Theme type.