05‐Cathy Doss - molab-itp/content-2026-itp GitHub Wiki

This is my wiki page for this class!!

Week 05

Week 01: Garden.playground, a random emoji garden. First Swift code.
Week 02: NYCSkyline.playground, an ascii New York skyline from text files.
Week 03: MoodPrint, a multi-view SwiftUI 10print where your mood picks the colors, line thickness and slant.
Week 04: Breathe, a breathing guide that uses a timer and sound.
Week 05: BasicNav, the class demos gathered behind one navigation list, plus a Check-in page saved with @AppStorage.

Copied Page1–Page9 from 03-ImageUiDemo-1-symbols and made Page9 the app's first screen.
Added the UIGraphicsImageRenderer demo and renamed its ContentView to UIGraphicsView, since an app can only have one struct with each name.
Added PlayAudioView and its three .m4a files. The files have to be inside the app's folder or loadBundleAudio can't find them.
Part 2: added a Check-in page from 05-AppStorageDemo. It remembers your name, your last feeling, and how many times you've visited, even after the app quits.
@AppStorage only takes simple types (String, Int, Double, Bool...), so the last visit time is saved as a Double and turned back into a Date to show it.
Noticed the "My Shapes" title never showed. .navigationTitle was outside the NavigationView, and moving it onto the List fixed it.

Week06: try the Router from 06-Router instead of NavigationView, and save a list of things (not just single values) as JSON.

NavigationView is deprecated. When should I switch to NavigationStack, and what changes?
PlayAudioView uses Bundle.main.path(...)!, which crashes if a file is missing. What's a safer way to load sounds?
@AppStorage keys are just strings. If two views spell the key differently, they quietly stop sharing. Is there a safer pattern?
What's the difference between drawing with UIGraphicsImageRenderer (UIKit) and with SwiftUI's Canvas (Week03)?