NEW: Start my new Ultimate Portfolio App course with a free Hacking with Swift+ trial! >>

< Back to Hacking with Swift+

Creating a StretchingHeader that sticks to the top of a view

In the full episode…

  • Height vs offset
  • Filling in the body
  • Trying out variations
  • List headers
  • Adding a view builder
  • Challenges
Get the full 18:35 video by subscribing

Why subscribe?


Hacking with Swift+ delivers high-quality tutorials for subscribers, with each tutorial coming as a 4K Ultra HD video and in text form so you can read or watch – whatever works best for you.

So, you can get this full video and article as well as all other subscriber-only tutorials and all future tutorials – all by subscribing to Hacking with Swift+ today.

Subscribe to Hacking with Swift+

More from Hacking with Swift+


How to use phantom types in Swift

24:11

ADVANCED SWIFT

FREE: How to use phantom types in Swift

Phantom types are a powerful way to give the Swift compiler extra information about our code so that it can stop us from making mistakes. In this article I’m going to explain how they work and why you’d want them, as well as providing lots of hands-on examples you can try.

Trees

31:55

DATA STRUCTURES

FREE: Trees

Trees are an extraordinarily simple, extraordinarily useful data type, and in this article we’ll make a complete tree data type using Swift in just a few minutes. But rather than just stop there, we’re going to do something quite beautiful that I hope will blow your mind while teaching you something useful.

Ultimate Portfolio App: Introduction

14:17

ULTIMATE PORTFOLIO APP

FREE: Ultimate Portfolio App: Introduction

While I’m sure you’re keen to get started programming immediately, please give me a few minutes to outline the goals of this course and explain why it’s different from other courses I’ve written.

Using memoization to speed up slow functions

36:18

HIGH-PERFORMANCE APPS

FREE: Using memoization to speed up slow functions

In this article you’ll learn how memoization can dramatically boost the performance of slow functions, and how easy Swift makes it thanks to its generics and closures.

Creating a WaveView to draw smooth waveforms

32:08

CUSTOM SWIFTUI COMPONENTS

FREE: Creating a WaveView to draw smooth waveforms

In this article I’m going to walk you through building a WaveView with SwiftUI, allowing us to create beautiful waveform-like effects to bring your user interface to life.

Creating a custom property wrapper using DynamicProperty

14:20

INTERMEDIATE SWIFTUI

Creating a custom property wrapper using DynamicProperty

It’s not hard to make a basic property wrapper, but if you want one that automatically updates the body property like @State you need to do some extra work. In this article I’ll show you exactly how it’s done, as we build a property wrapper capable of reading and writing documents from our app’s container.

Cleaning up Core Data

23:38

ULTIMATE PORTFOLIO APP

Cleaning up Core Data

Core Data’s optionals are quite different from Swift’s optionals, which makes them a little uncomfortable to work with. In this article I’m going to show you two ways of fixing this, which will help clear up our code nicely.

Animating buttons using ButtonStyle

15:44

INTERMEDIATE SWIFTUI

Animating buttons using ButtonStyle

SwiftUI’s ButtonStyle protocol is a great way to reuse designs across your app, to get a consistent look and feel everywhere. But they have one significant problem with animations, and in this article I’ll show you that problem in action, then walk you through how to fix it in a flexible way.

Creating a ShapeView to render UIBezierPaths

10:03

CUSTOM SWIFTUI COMPONENTS

Creating a ShapeView to render UIBezierPaths

Bezier paths let us draw all sorts of shapes efficiently and smoothly, and with a little work we can bring them into SwiftUI then animate them smooth, and in this article I’m going to walk you through making a very simple ShapeView struct to do just that.

Storing preferences efficiently

32:42

MAKING THE MOST OF FOUNDATION

Storing preferences efficiently

Apple’s UserDefaults system lets us store small amounts of user data for our app, which might sound simple but it’s deceptively powerful. In this article I’ll show you the correct way to create initial preferences, how to share preferences across applications, how to synchronize data with iCloud, and why this is a case where property wrappers probably aren’t a good solution.

Identifying performance hot spots with Time Profiler

28:56

HIGH-PERFORMANCE APPS

Identifying performance hot spots with Time Profiler

Instruments gives us a range of tools for finding performance problems, and in this article we’ll be looking at how the Time Profiler instrument can point out problems in seconds.

Customizing Label using LabelStyle

17:02

INTERMEDIATE SWIFTUI

Customizing Label using LabelStyle

Labels are one of the simplest views in SwiftUI, but that doesn’t mean there isn’t a lot to explore. In this video I’ll walk you through how to build custom label styles, including adding animation effects triggered by hovering with the iOS trackpad.

Making the most of optionals – part 2

20:24

ADVANCED SWIFT

Making the most of optionals – part 2

I already introduced how the internals of optionals work, including how they use conditional conformance and how to avoid infinitely sized structs. In this video I’m going to go further as we look at how our knowledge of Optional can be translated to Result, why it’s so important that optionals are functors and monads, and more.

Storing your code somewhere safe

21:32

ULTIMATE PORTFOLIO APP

Storing your code somewhere safe

At this point we have something very simple working, so now is a great time to stash your code away somewhere safe using source control. If you already know how to use Git then you’re welcome to skip this part.

Removing optionals from your code

31:24

INTERMEDIATE SWIFT

Removing optionals from your code

Optionals are one of Swift’s most powerful features, letting us write code that is guaranteed to be safe as long as we check and unwrap them carefully. However, more often than not I prefer to avoid optionals as often as possible, and in this article I’ll outline some approaches for doing so.

Controlling views using the accelerometer

39:03

SWIFTUI SPECIAL EFFECTS

Controlling views using the accelerometer

Reading device motion and orientation is a fast and slightly magical way to incorporate the real world into your apps, and can do a huge amount to add a little spark of delight to your UI. In this article I’m going to show you how easy it is to control SwiftUI layouts using the accelerometer, and give you a few ideas for special effects.

Converting measurements safely

17:58

MAKING THE MOST OF FOUNDATION

Converting measurements safely

Apple’s Foundation framework makes it easy for us to convert any kind of measurement into any other kind of measurement. In this article I’ll show you how to make the most of these APIs, but also why it’s so useful that they work with Swift features such as operator overloading, plus important protocols such as Comparable, Equatable, and Codable.

Codable networking with Combine

16:18

NETWORKING

Codable networking with Combine

So much of our job is about downloading JSON data, decoding it using Codable, then presenting it – it’s a core skill. But it’s common to see folks rely on huge libraries such as Alamofire, or get mixed up with URLSession. So, in this article we’ll look at how to rewrite common networking code using Combine, then add some generics to make it truly flexible.

Why opaque return types are so important

12:19

ADVANCED SWIFT

Why opaque return types are so important

Opaque return types are a powerful feature in Swift, and are also critically important for writing SwiftUI. In this article I’ll be explaining how they work, and why they give us more power than returning a simple protocol.

Basic button customization using ButtonStyle

29:23

INTERMEDIATE SWIFTUI

Basic button customization using ButtonStyle

SwiftUI’s humble Button view is actually capable of doing remarkable things if you take the time to customize it. In this video I’ll be walking you through the ButtonStyle protocol, showing you how we can use it to make great-looking and reusable button effects.

Link copied to your pasteboard.