Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Xcode 16のPreviewModifierと@Previewableを活用した効率的なプ...
Search
ojun
July 05, 2024
Programming
2
370
Xcode 16のPreviewModifierと@Previewableを活用した効率的なプレビュー方法の考察
ojun
July 05, 2024
Tweet
Share
More Decks by ojun
See All by ojun
Catch Up with Swift 5.10
ojun9
2
710
Overview: Swift OpenAPI Generator
ojun9
3
1.5k
if 式と switch 式による SwiftUI のプレビューエラー対策
ojun9
1
1.2k
楽しい夏休み!String Catalogs で新しい発見
ojun9
0
1.8k
ユニットテストを学んだ次に知りたかったApple標準APIに対するテストのやり方
ojun9
1
380
ハッカソンにおけるiOSアプリ開発での学びと楽しさ
ojun9
1
310
Other Decks in Programming
See All in Programming
pytest プラグインを開発して DRY に自動テストを書こう
inuatsu
2
230
Rails 8 Frontend: 10 commandments & 7 deadly sins in 2025
yshmarov
1
580
ビット演算の話 / Let's play with bit operations
kaityo256
PRO
3
140
Modernisation Progressive d’Applications PHP
hhamon
0
160
実践Dash - 手を抜きながら本気で作るデータApplicationの基本と応用 / Dash for Python and Baseball
shinyorke
2
210
フロントエンドの標準仕様をどう追っているか / How I follow the frontend standards specs
petamoriken
2
170
What is TDD?
urakawa_jinsei
1
200
利用者視点で考える、イテレータとの上手な付き合い方
syumai
4
210
CSC509 Lecture 01
javiergs
PRO
1
200
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
eileencodes
5
210
Iteratorでページネーションを実現する
sonatard
3
700
型付きで行うVSCode拡張機能開発 / VSCode Meetup #31
mazrean
0
210
Featured
See All Featured
Web Components: a chance to create the future
zenorocha
310
42k
The Cult of Friendly URLs
andyhume
76
6k
Ruby is Unlike a Banana
tanoku
96
11k
What’s in a name? Adding method to the madness
productmarketing
PRO
22
3.1k
Designing for Performance
lara
604
68k
Art, The Web, and Tiny UX
lynnandtonic
295
20k
How to Create Impact in a Changing Tech Landscape [PerfNow 2023]
tammyeverts
44
2k
How STYLIGHT went responsive
nonsquared
94
5.1k
JavaScript: Past, Present, and Future - NDC Porto 2020
reverentgeek
45
4.9k
Typedesign – Prime Four
hannesfritz
39
2.3k
No one is an island. Learnings from fostering a developers community.
thoeni
19
2.9k
Java REST API Framework Comparison - PWX 2021
mraible
PRO
28
7.5k
Transcript
potatotips #88 iOS/Android։ൃTipsڞ༗ձ 2024/07/05 @STORES Xcode 16ͷPreviewModifierͱ@Previewable Λ׆༻ͨ͠ޮతͳϓϨϏϡʔํ๏ͷߟ ojun -
DeNA Co., Ltd.
ࣗݾհʢojunʣ • name: ojun • 2023৽ଔೖࣾ • iOSΤϯδχΞ @ojun_9
Xcode 16ͷ PreviewModifier ͱ @Previewable Λ׆༻ͨ͠ޮతͳϓϨϏϡʔํ๏ͷߟ
PreviewModifier ͱ ˏPreviewable ʹ͍ͭͯ
@Previewable ʹ͍ͭͯ @Previewable Xcode 16 ͰՃ͞ΕͨϚΫϩ ϓϩύςΟʔϥούʔʹରͯ͠దԠ͢Δ͜ͱ͕Ͱ͖Δ #Previewͷ෦Ͱ༻Մೳ iOS
ʹؔͯ͠ iOS 18 Ҏ্Ͱಈ࡞͢Δ
None
PreviewModifierʹ͍ͭͯ PreviewModi fi er Xcode 16 ͰՃ͞Εͨprotocol iOS ʹؔͯ͠
iOS 18 Ҏ্Ͱಈ࡞͢Δ
None
None
None
None
None
None
None
None
Context Context
Context Context View
Context Context View
Context Context View
None
͜ͷ2ͭͷػೳΛݟͨ࣌ʹͲ͏ࢥ͍·ͨ͠ ͔ʁ
͜ͷ2ͭͷػೳΛݟͨ࣌ʹͲ͏ࢥ͍·͔ͨ͠ʁ ݸਓతʹ͜ΕΒͷػೳΛ࠷ॳʹݟͨ࣌ʮѻ͏ͷ͕େͦ͠͏ʯͱࢥͬͨ
͜ͷ2ͭͷػೳΛݟͨ࣌ʹͲ͏ࢥ͍·͔ͨ͠ʁ ݸਓతʹ͜ΕΒͷػೳΛ࠷ॳʹݟͨ࣌ʮѻ͏ͷ͕େͦ͠͏ʯͱࢥͬͨ
͜ͷ2ͭͷػೳΛݟͨ࣌ʹͲ͏ࢥ͍·͔ͨ͠ʁ ݸਓతʹ͜ΕΒͷػೳΛ࠷ॳʹݟͨ࣌ʮѻ͏ͷ͕େͦ͠͏ʯͱࢥͬͨ
͜ͷ2ͭͷػೳΛݟͨ࣌ʹͲ͏ࢥ͍·͔ͨ͠ʁ makeSharedContext() ͷ͍ํ͕؊ʹͳΔ mockαʔόͱ௨৴͢Δʁ → PreviewͰͦ͜·Ͱ͢Δͷ͔ʁ ݸਓతʹ͜ΕΒͷػೳΛ࠷ॳʹݟͨ࣌ʮѻ͏ͷ͕େͦ͠͏ʯͱࢥͬͨ
PreviewModifier ͱ @PreviewableΛ׆ ༻ͨ͠ޮతͳϓϨϏϡʔํ๏ͷߟ
લఏͱͳΔViewͷ࡞ SNSͷλΠϜϥΠϯΛߟ͑Δ
લఏͱͳΔViewͷ࡞ SNSͷλΠϜϥΠϯΛߟ͑Δ ߘΛද͢ߏମΛఆٛ
લఏͱͳΔViewͷ࡞ SNSͷλΠϜϥΠϯΛߟ͑Δ ViewΛఆٛ [Post] Λ࣋ͪ body Ͱར༻
લఏͱͳΔViewͷ࡞
લఏͱͳΔViewͷ࡞
લఏͱͳΔViewͷ࡞ PreviewͰͬͱද͍ࣔͤͨ͞ʂ
લఏͱͳΔViewͷ࡞
લఏͱͳΔViewͷ࡞
લఏͱͳΔViewͷ࡞
લఏͱͳΔViewͷ࡞ ಡΈࠐΈ࣌ͷ Placeholder େৎ͔ͳʁ ໊લ͘ͳͬͨ࣌େৎ͔ͳʁ վߦ͞ΕͨΒେৎ͔ͳʁӳޠɾֆจࣈͷ࣌ େৎ͔ͳ ͍͍Ͷͷ͕ଟ͍࣌େৎ͔ͳ 0݅ͷ࣌ඇදࣔʹͳΔ͔ͳʁ
લఏͱͳΔViewͷ࡞ ඞཁͳύλʔϯͷ Post ΛՃ͢Ε ෳύλʔϯͷ Preview Մೳ ͔͠͠ӈਤͷΑ͏ʹ͔ͳΓݟͮΒ͘ͳΔ
લఏͱͳΔViewͷ࡞ ඞཁͳύλʔϯͷ Post ΛՃ͢Ε ෳύλʔϯͷ Preview Մೳ ͔͠͠ӈਤͷΑ͏ʹ͔ͳΓݟͮΒ͘ͳΔ @Previewable
PreviewModi fi er Λར༻͠ ղܾ͢Δ
@Previewable PreviewModifier Λར༻͠ղܾ͢Δ
@Previewable PreviewModifier Λར༻͠ղܾ͢Δ 1. JSONϑΝΠϧΛ࡞͠ɺඞཁͳσʔλΛՃ͢Δ
@Previewable PreviewModifier Λར༻͠ղܾ͢Δ 1. JSONϑΝΠϧΛ࡞͠ɺඞཁͳσʔλΛՃ͢Δ 1. ʢࠓճ ChatGPT Λར༻ͯ͠࡞ʣ
@Previewable PreviewModifier Λར༻͠ղܾ͢Δ 1. JSONϑΝΠϧΛ࡞͠ɺඞཁͳσʔλΛՃ͢Δ 1. ʢࠓճ ChatGPT Λར༻ͯ͠࡞ʣ
2. ʢ࡞͠Ճ͢Δ͚ͩͳͷͰׂѪʣ
@Previewable PreviewModifier Λར༻͠ղܾ͢Δ 1. JSONϑΝΠϧΛ࡞͠ɺඞཁͳσʔλΛՃ͢Δ 1. ʢࠓճ ChatGPT Λར༻ͯ͠࡞ʣ
2. ʢ࡞͠Ճ͢Δ͚ͩͳͷͰׂѪʣ 2. JSONϑΝΠϧΛಡΈࠐΈ decode ͠ Preview ʹೖ
@Previewable PreviewModifier Λར༻͠ղܾ͢Δ let posts: [Post] ͕ @Environment Ͱͳ͍߹
@Previewable Λར༻͢Δͱྑͦ͞͏
@Previewable PreviewModifier Λར༻͠ղܾ͢Δ
@Previewable PreviewModifier Λར༻͠ղܾ͢Δ .task {} ͘͠ .onAppear {} Λ
ར༻ͦ͠ͷதͰಡΈࠐΈΛߦ͏
@Previewable PreviewModifier Λར༻͠ղܾ͢Δ .task {} ͘͠ .onAppear {} Λ
ར༻ͦ͠ͷதͰಡΈࠐΈΛߦ͏ decode ͕ޭͨ͠Βɺposts ʹೖ ͢Δ
.task {} ͘͠ .onAppear {} Λ ར༻ͦ͠ͷதͰಡΈࠐΈΛߦ͏ decode ͕ޭͨ͠Βɺposts ʹೖ
͢Δ ෳͷύλʔϯͰ Preview ͕Մೳʹͳͬͨ 🎉
@Previewable PreviewModifier Λར༻͠ղܾ͢Δ let posts: [Post] ͕ @Environment Ͱ͋Δ߹
PreviewModi fi er Λར༻͢Δͱྑͦ͞͏
@Previewable PreviewModifier Λར༻͠ղܾ͢Δ
None
None
·ͱΊ
·ͱΊ Xcode 16͔ΒPreviewModi fi er ͱ @Previewable ͕Ճ͞Εͨ ͜ΕΒΛར༻͢Δ͜ͱͰ Preview
ͷମݧ͕ΑΓ্͢Δ JSONϑΝΠϧΛར༻͠ΤϯςΟςΟΛೖ͢Δ͜ͱͰগ͠ͷίʔυͰଟྔͷύλʔϯΛ Preview Ͱ֬ೝ͢Δ͜ͱ͕Մೳ
͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ