SwiftUI Navigation: Sheets & Popovers, Part 3

Episode #164 • Oct 18, 2021 • Subscriber-Only

Now that we’ve built up the tools needed to bind application state to navigation, let’s exercise them. We’ll quickly add two more features to our application, beef up our navigation tools, and even write unit tests that assert against navigation and deep-linking.

Sheets & Popovers, Part 3
Introduction
00:05
Modeling item row navigation
01:37
Duplication through a popover
16:31
Testing navigation and deep-linking
27:48
Next time: navigation links
38:18

Unlock This Episode

Our Free plan includes 1 subscriber-only episode of your choice, plus weekly updates from our newsletter.

Introduction

We have finished our refactor, and though there were a few bumps along the way, we got through it, and it is already greatly simplifying our inventory list domain. The inventory list view and view model get to handle fewer responsibilities, and we push more domain specific responsibilities to the row view and row view model.

While it’s true that creating child view models is a little gnarly, the benefits from doing so are tremendous. If we wanted to, we could completely split the inventory list domain from the item row domain, putting them in completely separate modules and making it easier to build, test, and run them in isolation.

Don’t forget, but the whole reason we did this refactor was to add new features for editing and duplicating items to the row domain, so now let’s flex these muscles by adding more functionality to the row and show that it does not needlessly bloat the parent domain. We are going to add two more buttons to the row: one for editing the item, and one for duplicating the item. And just to make things interesting we are going to show the edit screen in a modal sheet and the duplicate screen in a popover.

This episode is for subscribers only.

Subscribe to Point-Free

Access this episode, plus all past and future episodes when you become a subscriber.

See plans and pricing

Already a subscriber? Log in

References

SwiftUI Navigation

Brandon Williams & Stephen Celis • Tuesday Nov 16, 2021

After 9 episodes exploring SwiftUI navigation from the ground up, we open sourced a library with all new tools for making SwiftUI navigation simpler, more ergonomic and more precise.

WWDC 2021: Demystifying SwiftUI

Matt Ricketson, Luca Bernardi & Raj Ramamurthy • Wednesday Jun 9, 2021

An in-depth explaining on view identity, lifetime, and more, and crucial to understanding how @State works.

Collection: Derived Behavior

Brandon Williams & Stephen Celis • Monday May 17, 2021

The ability to break down applications into small domains that are understandable in isolation is a universal problem, and yet there is no default story for doing so in SwiftUI. We explore the problem space and solutions, in both vanilla SwiftUI and the Composable Architecture.

Downloads