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
Jetpack Compose でやってイイこと・ダメなこと
Search
カーキ
October 06, 2023
Technology
2
590
Jetpack Compose でやってイイこと・ダメなこと
mobile.stmn #2 (2023/10/6)
https://stmn.connpass.com/event/294182/
カーキ
October 06, 2023
Tweet
Share
More Decks by カーキ
See All by カーキ
好きから始まるローカルキャリア
takarkiz
0
20
Composeで敷き詰めるUIを どうやって作るか
takarkiz
0
85
TaskStackBuilderの紹介
takarkiz
0
30
Gemini API でアプリをつくりたい!
takarkiz
0
200
名古屋で勉強会を主催する3つの理由
takarkiz
0
200
GitHub Issue を利用したチケット管理
takarkiz
0
110
Gitの仕組みを理解しよう
takarkiz
0
120
写真と動画の部分的なアクセス権について
takarkiz
0
260
もっとJetpackComposeと仲良くなる
takarkiz
0
330
Other Decks in Technology
See All in Technology
MCP認可の現在地と自律型エージェント対応に向けた課題 / MCP Authorization Today and Challenges to Support Autonomous Agents
yokawasa
5
2.5k
Delegate authentication and a lot more to Keycloak with OpenID Connect
ahus1
0
240
Oracle Exadata Database Service on Cloud@Customer X11M (ExaDB-C@C) サービス概要
oracle4engineer
PRO
2
6.4k
MySQL HeatWave:サービス概要のご紹介
oracle4engineer
PRO
3
1.6k
ウォンテッドリーのアラート設計と Datadog 移行での知見
donkomura
0
120
Lambda management with ecspresso and Terraform
ijin
2
170
Intro to Software Startups: Spring 2025
arnabdotorg
0
270
マルチプロダクト×マルチテナントを支えるモジュラモノリスを中心としたアソビューのアーキテクチャ
disc99
1
650
リリース2ヶ月で収益化した話
kent_code3
1
320
Infrastructure as Prompt実装記 〜Bedrock AgentCoreで作る自然言語インフラエージェント〜
yusukeshimizu
1
160
20250807 Applied Engineer Open House
sakana_ai
PRO
2
580
夏休みWebアプリパフォーマンス相談室/web-app-performance-on-radio
hachi_eiji
0
260
Featured
See All Featured
10 Git Anti Patterns You Should be Aware of
lemiorhan
PRO
656
60k
Evolution of real-time – Irina Nazarova, EuRuKo, 2024
irinanazarova
8
880
RailsConf 2023
tenderlove
30
1.2k
Build your cross-platform service in a week with App Engine
jlugia
231
18k
Designing for Performance
lara
610
69k
Git: the NoSQL Database
bkeepers
PRO
431
65k
Mobile First: as difficult as doing things right
swwweet
223
9.9k
Performance Is Good for Brains [We Love Speed 2024]
tammyeverts
10
1k
Building Applications with DynamoDB
mza
96
6.6k
The Illustrated Children's Guide to Kubernetes
chrisshort
48
50k
Stop Working from a Prison Cell
hatefulcrawdad
271
21k
Cheating the UX When There Is Nothing More to Optimize - PixelPioneers
stephaniewalter
283
13k
Transcript
+FUQBDL$PNQPTFͰͬͯ ΧʔΩ!NPCJMFTUNOʢʣ μϝͳ͜ͱ🙅 ΠΠ͜ͱ🙆
ϓϩϑΟʔϧ Name = “ΧʔΩ” BelongTo = “גࣜձࣾελϝϯ/ϞόΠϧΞϓϦG” Work = “Android
App Engineer” Twitter = “@khaki_ngy” Fav = listOf(“🎞”, “🍳”) / / TODO:ӡӦΛ͍ͯ͠ΔίϛϡχςΟͷΠϕϯτͷհΛ͢Δ Organization = “Liven up NAGOYA”
ࠓ͢͜ͱ 1 . Jetpack Compose Recomposition 2 . 3 .
4 .
+FUQBDL$PNQPTFૉΒ͍͠👏
+FUQBDL$PNQPTFͷྑ͍ͱ͜Ζ❤ UI AndroidView AndroidView Composable Google
+FUQBDL$PNQPTFͷؾʹͳΔͱ͜Ζ👀 Recomposition AndroidView UI Recomposition • ඳըࡁΈͷը໘͕࠶ඳը͞ΕΔ͜ͱ • ࠶ඳըࣗମʹͳ͍ •
ҙਤ͠ͳ͍λΠϛϯάͰRecomposition͕ൃੜͯ͠͠·͏ͱύϑΥʔϚϯεͷԼʹܨ͕Δ
ҙਤ͠ͳ͍ 3FDPNQPTJUJPOΛ͑Δϧʔϧ ࠓ͢͜ͱ
ܕͷ҆ఆੑฤ
ܕͷ҆ఆੑʹ͍ͭͯ ܕͷʮ҆ఆʯʮෆ҆ఆʯ Composable Recomposition Ҿʹ༩͑Δܕ͕҆ఆͳͷ͔ෆ҆ఆͳͷ͔ΛΔඞཁ͕͋Δ
🙆ͬͯΠΠ͜ͱ $PNQPTBCMFؔͷύϥϝʔλʹϓ ϦϛςΟϒܕΛ͏
🙆ΠΠͶ $PNQPTBCMFؔͷύϥϝʔλʹϓϦϛςΟϒܕΛ͏ Recomposition 👍
🙅ͬͯμϝͳ͜ͱ $PNQPTBCMFؔͷύϥϝʔλʹί ϨΫγϣϯܕ -JTU 4FU Λ͏
🙅ؾΛ͚ͭͯ $PNQPTBCMFؔͷύϥϝʔλʹίϨΫγϣϯܕ -JTU 4FU Λ͏ items Recomposition
🙆ͬͯΠΠ͜ͱ *NNVUBCMF-JTUΛར༻͢Δ
🙆ΠΠͶ *NNVUBCMF-JTUΛར༻͢Δ kotlinx.collections.immutable Immutable Collection ImmutableList/ImmutableSet/ImmutableMap
🙅ͬͯμϝͳ͜ͱ ҾʹඇσʔλΫϥεΛར༻͢Δ
🙅ؾΛ͚ͭͯ ҾʹඇσʔλΫϥεΛར༻͢Δ Recomposition
🙆ͬͯΠΠ͜ͱ ίϨΫγϣϯܕΛϥοϓͨ͠Ϋϥεʹ !*NNVUBCMFΞϊςʔγϣϯΛ͚Δ
🙆ΠΠͶ ίϨΫγϣϯܕΛϥοϓͨ͠Ϋϥεʹ!*NNVUBCMFΞϊςʔγϣϯΛ͚Δ Collection @Immutable Items
🙆ͬͯΠΠ͜ͱ ఆͷΈͰߏ͞ΕͨσʔλΫϥε Λར༻͢Δ
🙆ΠΠͶ ఆͷΈͰߏ͞ΕͨσʔλΫϥεΛར༻͢Δ @Immutable
Πϯελϯεੜ
Πϯελϯεੜͷίετ $PNQPTBCMFؔͰͷҙ Composable Composable
🙅ͬͯμϝͳ͜ͱ $PNQPTBCMFؔͷείʔϓͰΠϯ ελϯεΛੜ͢Δ
🙅ؾΛ͚ͭͯ $PNQPTBCMFؔͷείʔϓͰΠϯελϯεΛੜ͢Δ Widget Recomposition Title Title() Composable Recomposition
🙆ͬͯΠΠ͜ͱ ΠϯελϯεੜʹSFNFNCFSΛ ར༻͢Δ
🙆ΠΠͶ ΠϯελϯεੜʹSFNFNCFSΛར༻͢Δ Remember Composition
🙆ͬͯΠΠ͜ͱ SFNFNCFSͷΩʔΛར༻͢Δ
🙆ΠΠͶ SFNFNCFSͷΩʔΛར༻͢Δ remember key
🤷͜ΕͲ͏ʁ SFNFNCFSͷΩʔΛར༻͢Δ Remember Recomposition
🙆ͬͯΠΠ͜ͱ EFSJWFE4UBUF0GΛར༻͢Δ
🙆ΠΠͶ EFSJWFE4UBUF0GΛར༻͢Δ derivedStateOf textColor Recomposition
🤷ཹҙ 3FDPNQPTJUJPOʹහײʹͳΓա͗ͳ͍ Recomposition
3FDPNQPTJUJPOΛݟۃΊΔ🕵
3FDPNQPTJUJPOΛݟۃΊΔํ๏ 1 . Layout Inspector Recomposition 2 . recomposeHighlighter
-BZPVU*OTQFDUPS 3FDPNQPTJUJPOͷݸΛදࣔͰ͖Δʂ
-BZPVU*OTQFDUPSͰ֬ೝ͢Δ্Ͱͷҙ Gira ff e minify false Show Recomposition Counts
SFDPNQPTF)JHIMJHIUFSΛ͏ Google Github Modi fi er Composable Modi fi er
Recomposition
·ͱΊ
ࠓͷ·ͱΊ Jetpack Compose Recomposition Recomposition 領 Recomposition