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
Let's Coding SwiftUI on iPad!
Search
Yutaro Muta
January 25, 2020
Programming
1
530
Let's Coding SwiftUI on iPad!
第11回 HAKATA.swift x Swift愛好会~福岡と東京のSwift勉強会コラボ~
https://hakata-swift.connpass.com/event/149988/
Yutaro Muta
January 25, 2020
Tweet
Share
More Decks by Yutaro Muta
See All by Yutaro Muta
猫と暮らすネットワークカメラ生活🐈 ~Vision frameworkでペットを愛でよう~ / iOSDC Japan 2025
yutailang0119
0
200
猫と暮らす Google Nest Cam生活🐈 / WebRTC with Google Nest Cam
yutailang0119
0
210
Swiftの “private” を テストする / Testing Swift "private"
yutailang0119
0
250
Apple Vision Pro購入RTA 1泊3日弾丸ハワイツアー / RTA: Purchase Apple Vision Pro in Hawaii
yutailang0119
0
1.4k
個人開発のたのしみ / Enjoying personal development
yutailang0119
0
1k
バックポートして学ぶ新APIの仕組み
yutailang0119
0
3k
Backport AsyncImage
yutailang0119
0
740
xcrun Essentials
yutailang0119
6
1.3k
Property Wrapperで遊ぼう / Play with Property Wrapper
yutailang0119
2
330
Other Decks in Programming
See All in Programming
Pythonスレッドとは結局何なのか? CPython実装から見るNoGIL時代の変化
curekoshimizu
3
550
メモリ不足との戦い〜大量データを扱うアプリでの実践例〜
kwzr
1
430
Breaking Up with Big ViewModels — Without Breaking Your Architecture (droidcon Berlin 2025)
steliosf
PRO
1
200
ポスターセッション: 「まっすぐ行って、右!」って言ってラズパイカーを動かしたい 〜生成AI × Raspberry Pi Pico × Gradioの試作メモ〜
komofr
0
460
API Platform 4.2: Redefining API Development
soyuka
0
720
Django Ninja による API 開発効率化とリプレースの実践
kashewnuts
0
410
育てるアーキテクチャ:戦い抜くPythonマイクロサービスの設計と進化戦略
fujidomoe
1
110
Astroの使用感とディレクトリ設計についての考察
saku0109
0
130
Repenser les filtres API Platform: une nouvelle syntaxe
vinceamstoutz
2
130
パフォーマンスチューニングで Web 技術を深掘り直す
progfay
18
4.6k
プログラミングどうやる? ~テスト駆動開発から学ぶ達人の型~
a_okui
0
180
CSC509 Lecture 01
javiergs
PRO
1
420
Featured
See All Featured
Building Applications with DynamoDB
mza
96
6.6k
Practical Orchestrator
shlominoach
190
11k
Principles of Awesome APIs and How to Build Them.
keavy
127
17k
How STYLIGHT went responsive
nonsquared
100
5.8k
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
danielanewman
229
22k
Building a Scalable Design System with Sketch
lauravandoore
462
33k
What’s in a name? Adding method to the madness
productmarketing
PRO
23
3.7k
Music & Morning Musume
bryan
46
6.8k
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
sstephenson
162
15k
The Cult of Friendly URLs
andyhume
79
6.6k
Learning to Love Humans: Emotional Interface Design
aarron
274
40k
Optimising Largest Contentful Paint
csswizardry
37
3.4k
Transcript
Let's Coding SwiftUI on iPad! 2020/01/21 @HAKATA.swift vol.11 Yutaro Muta
@yutailang0119
• Yutaro Muta @yutailang0119 • Hatena Co., Ltd. @Kyoto •
Conference Staff • builderscon 2020 • try! Swift Tokyo 2020 • and more Who am I ?
Goal • iPadͰίʔσΟϯά͢ΔΑ͏ʹͳΔ • ͍࣋ͬͯͳ͍ਓiPadΛങͬͯؼΔ • SwiftUIͷViewʹ͍ͭͯɺͪΐͬͱΔ
What's Swift Playgrounds?
What's Swift Playgrounds? • iPadΞϓϦ Swift Playground • Document: https://developer.apple.com/documentation/swift_playgrounds
• ϝΠϯϢʔεɺϓϩάϥϛϯάڭҭΒ͍͠
What's Swift Playgrounds? • iOSΞϓϦ։ൃͱ͍ۙ͠ػೳ͕ଟ͑͘Δ • UIKit (Xcode Playground) •
Camera • Bluetooth • AR (SceneKit) • SwiftUI ͑Δʂʂʂʂʂ • Swift Playgrounds 3.1: Build with the SwiftUI framework in new playgrounds you create
Run SwiftUI on Swift Playgrounds
Run SwiftUI on Swift Playgrounds import SwiftUI import PlaygroundSupport struct
ContentView: View { var body: some View { VStack { Text("Hello") .font(.largeTitle) .foregroundColor(.primary) Text("world") .font(.title) .foregroundColor(.secondary) } } } let host = UIHostingController(rootView: ContentView()) PlaygroundPage.current.liveView = host
Run SwiftUI on Swift Playgrounds
Run Swift Playgrounds file on Xcode
Run Swift Playgrounds file on Xcode • PlaygroundsͷStarting Pointʹ Xcode
PlaygroundΛબ͢Δ • ֦ுࢠ͕ .playgroundͱͯ͠࡞͞ΕΔ (্هҎ֎ͩͱ .playgroundbook) -> XcodeͷPlaygroundͰ࣮ߦ͕Ͱ͖Δ • ٯʹɺXcodeͰ࡞ͨ͠ .playground Swift PlaygroundsͰ࣮ߦՄೳ
Run Swift Playgrounds file on Xcode
Pros/Cons of Swift Playgrounds
Pros of Swift Playgrounds • iPadͰखܰʹίʔυ͕ॻ͚Δ • FoundationSwiftUIͦΕҎ֎ͷFrameworkѻ͑Δ • ΦϑϥΠϯͰ࣮ߦՄೳ
Cons of Swift Playgrounds • XcodeʹൺΔͱɺΤσΟλΓͳ͍ • ίϯύΠϧ • ૣ͘ͳ͍
• XcodeͷSwiftUI Canvasͳ͍ • ຖճ࣮ߦ͕ඞཁ • UIHostingControllerʹೖΕͨ1ͭViewΛࢹ͢Δ͜ͱʹͳΔ
͓͠·͍
⚡͔͜͜Βຊฤ⚡
Cons of Swift Playgrounds • XcodeʹൺΔͱɺΤσΟλΓͳ͍ • ίϯύΠϧ • ૣ͘ͳ͍
• XcodeͷSwiftUI Canvasͳ͍ • ຖճ࣮ߦ͕ඞཁ • UIHostingControllerʹೖΕͨ1ͭViewΛࢹ͢Δ͜ͱʹͳΔ
Cons of Swift Playgrounds • XcodeʹൺΔͱɺΤσΟλΓͳ͍ • ίϯύΠϧ • ૣ͘ͳ͍
• XcodeͷSwiftUI Canvasͳ͍ • ຖճ࣮ߦ͕ඞཁ • UIHostingControllerʹೖΕͨ1ͭViewΛࢹ͢Δ͜ͱʹͳΔ <- AppleཔΉ
Cons of Swift Playgrounds • XcodeʹൺΔͱɺΤσΟλΓͳ͍ • ίϯύΠϧ • ૣ͘ͳ͍
• XcodeͷSwiftUI Canvasͳ͍ • ຖճ࣮ߦ͕ඞཁ • UIHostingControllerʹೖΕͨ1ͭViewΛࢹ͢Δ͜ͱʹͳΔ <- AppleཔΉ
Cons of Swift Playgrounds • XcodeʹൺΔͱɺΤσΟλΓͳ͍ • ίϯύΠϧ • ૣ͘ͳ͍
• XcodeͷSwiftUI Canvasͳ͍ • ຖճ࣮ߦ͕ඞཁ • UIHostingControllerʹೖΕͨ1ͭViewΛࢹ͢Δ͜ͱʹͳΔ <- AppleཔΉ
Cons of Swift Playgrounds • XcodeʹൺΔͱɺΤσΟλΓͳ͍ • ίϯύΠϧ • ૣ͘ͳ͍
• XcodeͷSwiftUI Canvasͳ͍ • ຖճ࣮ߦ͕ඞཁ • UIHostingControllerʹೖΕͨ1ͭViewΛࢹ͢Δ͜ͱʹͳΔ ^ | Ͳ͏ʹ͔Ͱ͖ͦ͏
yutailang0119/LayoutInspector ໊લ͚͍ͯΔ͚Ͳɺ·ͩͰ͖ͯͳ͍
LayoutInspector
LayoutInspector import SwiftUI struct LayoutInspector<Body: View>: View { private let
_body: Body private let color: Color init(body: Body, color: Color? = nil) { self._body = body self.color = color ?? Color.random } var body: some View { ZStack(alignment: .topLeading) { self._body .layoutPriority(1.0) self._label } .border(color) } private var _label: some View { Text(String(describing: type(of: _body))) .lineLimit(1) .font(.footnote) .foregroundColor(.primary) .background(color.opacity(0.7)) } } import SwiftUI extension SwiftUI.View { func layoutInspector(color: Color? = nil) -> some View { LayoutInspector(body: self, color: color) } }
LayoutInspector
ᘳ
< ViewModifier protocolʹ ४ڌ͢ΔͱΑͦ͞͏ͩΑ
ViewModifier • https://developer.apple.com/documentation/swiftui/viewmodifier > A modifier that you apply to
a view or another view modifier, producing a different version of the original value. • ModifiedContent View.modifier(_:) ͱΈ߹Θͤͯ͏
Custom ViewModifier import SwiftUI struct PrimaryLabel: ViewModifier { func body(content:
Content) -> some View { content .padding() .background(Color.red) .foregroundColor(Color.white) .font(.largeTitle) } } HACKING WITH Swift: How to create custom modifiers https://www.hackingwithswift.com/quick-start/swiftui/how-to-create-custom-modifiers
Extension SwiftUI.View import SwiftUI extension SwiftUI.View { func labelPrimary() ->
some View { self .modifier(PrimaryLabel()) } }
Custom ViewModifier
ͳΔ΄ͲɺΑͦ͞͏ͩ
͔݁Βݴ͏ͱɺେมͩͬͨ
ModifierΛ࡞ͬͯɺ ෦ͰLayoutInspectorΛͬͯΈΔ
LayoutInspectModifier (α) struct LayoutInspectModifier: ViewModifier { private let color: Color?
init(color: Color? = nil) { self.color = color } public func body(content: Content) -> some View { LayoutInspector(body: content, color: color) } }
LayoutInspectModifier (α)
_ViewModifier_Content<LayoutInspectorModifier> LayoutInspectModifier (α)
ViewModifierͷ࣮ • func body(content: Self.Content) -> Self.Body • Gets the
current body of the caller. • Discussion • content is a proxy for the view that will have the modifier represented by Self applied to it. • typealias ViewModifier.Content • The content view type.
ViewModifierͷ࣮ • ViewModifier.Content ɺݩͷViewͦͷͷͰͳ͘ɺProxy • contentʹ type(of:) Λ͔͚ͯɺݩͷViewͷTypeΘ͔Βͳ͍
OMG
࡞ઓมߋ • ModifierΛ͚Δ • ֎ͱҙͷϥϕϧΛ͚Δ LayoutInspectModifier • ֎Λ͚ͭͭɺType໊Λදࣔ͢Δ TypeNameLayoutInspectModifier
LayoutInspecterΛมߋ
LayoutInspecter import SwiftUI struct LayoutInspector<Body: View>: View { private let
_body: Body private let label: String private let color: Color init(body: Body, label: String, color: Color? = nil) { self._body = body self.label = label self.color = color ?? Color.random } var body: some View { ZStack(alignment: .topLeading) { self._body .layoutPriority(1.0) self._label } .border(color) } private var _label: some View { Text(label) .lineLimit(1) .font(.footnote) .foregroundColor(.primary) .background(color.opacity(0.7)) } }
LayoutInspectModifier
LayoutInspectModifier import SwiftUI struct LayoutInspectModifier: ViewModifier { private let color:
Color? private let label: String init(color: Color? = nil, label: String = "") { self.color = color self.label = label } func body(content: Content) -> some View { LayoutInspector(body: content, label: label, color: color) } }
TypeNameLayoutInspectModifier
TypeNameLayoutInspectModifier import SwiftUI struct TypeNameLayoutInspectModifier<V: View>: ViewModifier { private let
color: Color? private let _body: V init(color: Color? = nil, body: V) { self.color = color self._body = body } func body(content: Content) -> some View { LayoutInspector(body: content, label: String(describing: type(of: _body)), color: color) } }
ModifierΛద༻͢Δextension import SwiftUI extension SwiftUI.View { func layoutInspector(color: Color? =
nil, label: String = "") -> some View { self .modifier(LayoutInspectModifier(color: color, label: label)) } func typeNameLayoutInspector(color: Color? = nil) -> some View { self .modifier(TypeNameLayoutInspectModifier(color: color, body: self)) } }
࣮ߦʂ
࣮ߦʂ
Αͦ͞͏
࣮·ͩམͱ͕݀͠...
contentView.frame()
ViewModifierΛܦ༝͢ΔViewʹ TypeNameLayoutInspectModifier ͬͺΓյΕΔ
ࠓ͜͜·Ͱ
·ͱΊ
·ͱΊ • iPad͚ͩͰɺSwiftɺSwiftUIΛॻ͘͜ͱͰ͖Δ • yutailang0119/LayoutInspector ɺ͏ͪΐͬͱ࿅͖ͬͯ·͢ • LayoutInspectModifier୯ମͷΞϓϩʔνѱ͘ͳͦ͞͏ • Swift
Playgroundsͷ༻్͚ͩͰͳ͘ɺΞϓϦέʔγϣϯ։ൃͷσόοΨ ͱͯ͠ൃల͍ͤͨ͞ • ྫ͑ɺShake GestureΛरͬͯɺදࣔ/ඇදࣔΛΓସ͑Δ
Reference • https://yutailang0119.hatenablog.com/entry/swiftui-with-swift-playgrounds • https://www.apple.com/swift/playgrounds/ • https://developer.apple.com/documentation/swift_playgrounds • https://developer.apple.com/xcode/swiftui/ •
https://tech.d-itlab.co.jp/programming/1052/ • https://developer.apple.com/documentation/swiftui/viewmodifier • https://www.hackingwithswift.com/quick-start/swiftui/how-to-create-custom-modifiers
&OKPZ4XJGU1MBZHSPVOET 5IBOLT w NVUBZVUBSP!HNBJMDPN w IUUQTUXJUUFSDPNZVUBJMBOH w IUUQTHJUIVCDPNZVUBJMBOH