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
CustomView in Kotlin @ potatotips #42
Search
Yoshihiro WADA
July 25, 2017
Programming
2
1.2k
CustomView in Kotlin @ potatotips #42
potatotips #42にて発表したKotlinでCustomViewを作る話のスライドです。
Yoshihiro WADA
July 25, 2017
Tweet
Share
More Decks by Yoshihiro WADA
See All by Yoshihiro WADA
AndroidデバイスにFTPサーバを建立する
e10dokup
0
250
Gradleの実行環境設定を見直す
e10dokup
0
850
Firebase App Distributionのテストアプリ配信を試しやすくする
e10dokup
0
560
アプリに署名する 〜GitHub ActionsでのCIも見据えて〜
e10dokup
0
1.1k
Profileable buildでより正確なパフォーマンスを掴む
e10dokup
0
710
[DroidKaigi 2021] メディアアクセス古今東西 / Now and Future of Media Access
e10dokup
0
3.4k
今更「dp」を考える / Let's think about "dp" now
e10dokup
0
5.6k
1から学ぶAndroidアプリデバッグ - アプリの動作を追いかけよう / Learn Android application debugging from the scratch - track apps' behaviors
e10dokup
10
3.1k
Guide to background processingを読んでみる / Reading "Guide to background processing"
e10dokup
0
250
Other Decks in Programming
See All in Programming
Visual StudioのGitHub Copilotでいろいろやってみる
tomokusaba
1
180
『GO』アプリ データ基盤のログ収集システムコスト削減
mot_techtalk
0
130
Grafana Loki によるサーバログのコスト削減
mot_techtalk
1
130
ML.NETで始める機械学習
ymd65536
0
210
社内フレームワークとその依存性解決 / in-house framework and its dependency management
vvakame
1
570
SwiftUI Viewの責務分離
elmetal
PRO
2
250
Djangoにおける複数ユーザー種別認証の設計アプローチ@DjangoCongress JP 2025
delhi09
PRO
4
380
Honoのおもしろいミドルウェアをみてみよう
yusukebe
1
210
楽しく向き合う例外対応
okutsu
0
430
Multi Step Form, Decentralized Autonomous Organization
pumpkiinbell
1
790
技術を根付かせる / How to make technology take root
kubode
1
250
Formの複雑さに立ち向かう
bmthd
1
890
Featured
See All Featured
What's in a price? How to price your products and services
michaelherold
244
12k
Save Time (by Creating Custom Rails Generators)
garrettdimon
PRO
29
1k
Producing Creativity
orderedlist
PRO
344
39k
Bash Introduction
62gerente
611
210k
jQuery: Nuts, Bolts and Bling
dougneiner
63
7.6k
Principles of Awesome APIs and How to Build Them.
keavy
126
17k
A Philosophy of Restraint
colly
203
16k
ReactJS: Keep Simple. Everything can be a component!
pedronauck
666
120k
Fashionably flexible responsive web design (full day workshop)
malarkey
406
66k
Scaling GitHub
holman
459
140k
No one is an island. Learnings from fostering a developers community.
thoeni
21
3.1k
Code Reviewing Like a Champion
maltzj
521
39k
Transcript
$VTUPN7JFXJO,PUMJO :PTIJIJSP8BEBBLB!FEPLVQ QPUBUPUJQT!$PPLQBE *OD
୭ͶΜ͓લ :PTIJIJSP8BEB Ɠ $ZCFS"HFOU *OD "EUFDI4UVEJP"*.FTTFOHFS !FEPLVQ ȍ
FEPLVQ FEPLVQ ,PUMJO ྺ ϲ݄
,PUMJO ྺ ϲ݄ ୭ͶΜ͓લ :PTIJIJSP8BEB Ɠ $ZCFS"HFOU *OD
"EUFDI4UVEJP"*.FTTFOHFS !FEPLVQ ȍ FEPLVQ FEPLVQ
ࠓճ͢͜ͱ ⋆ ,PUMJO Ͱ $VTUPN7JFX Λ࡞͢Δ ? ίϯετϥΫλͲ͏ͳΔʜʁ ?
+BWB ͔ΒݺͿࡍʹʜʁ ? $BMMCBDL Ͳ͏͢Εʜʁ
$POTUSVDUPS QVCMJDDMBTT$VTUPN7JFXFYUFOET7JFX\ QVCMJD$VTUPN7JFX $POUFYUDPOUFYU \ TVQFS DPOUFYU JOJU
^ QVCMJD$VTUPN7JFX $POUFYUDPOUFYU !/VMMBCMF"UUSJCVUF4FUBUUST \ TVQFS DPOUFYU BUUST JOJU ^ QVCMJD$VTUPN7JFX $POUFYUDPOUFYU !/VMMBCMF"UUSJCVUF4FUBUUST JOUEFG4UZMF"UUS \ TVQFS DPOUFYU BUUST EFG4UZMF"UUS JOJU ^ QSJWBUFWPJEJOJU \ JOJUJBMJ[F ^ NFUIPET ^ ⋆ ී௨ͷ $POTUSVDUPS
$POTUSVDUPS DMBTT$VTUPN7JFX7JFX\ DPOTUSVDUPS DPOUFYU$POUFYU TVQFS DPOUFYU DPOTUSVDUPS
DPOUFYU$POUFYU BUUST"UUSJCVUF4FU TVQFS DPOUFYU BUUST DPOTUSVDUPS DPOUFYU$POUFYU BUUST"UUSJCVUF4FU EFG4UZMF"UUS*OU TVQFS DPOUFYU BUUST EFG4UZMF"UUS JOJU\ JOJUJBMJ[F ^ NFUIPET ^ ⋆ ,PUMJO Ͱ JOJU ϒϩοΫΛͬͯΈΔ TFDPOEFSZ DPOTUSVDUPST
$POTUSVDUPS DMBTT$VTUPN7JFX!+WN0WFSMPBETDPOTUSVDUPS DPOUFYU$POUFYU BUUST"UUSJCVUF4FU OVMM EFG4UZMF"UUS*OU 7JFX DPOUFYU
BUUST EFG4UZMF"UUS \ JOJU\ JOJUJBMJ[F ^ NFUIPET ^ ⋆ σϑΥϧτҾΛͬͯΈΔ QSJNBSZ DPOTUSVDUPS
$POTUSVDUPS DMBTT$VTUPN7JFX!+WN0WFSMPBETDPOTUSVDUPS DPOUFYU$POUFYU BUUST"UUSJCVUF4FU OVMM EFG4UZMF"UUS*OU 7JFX DPOUFYU
BUUST EFG4UZMF"UUS \ JOJU\ JOJUJBMJ[F ^ NFUIPET ^ ⋆ σϑΥϧτҾΛͬͯΈΔ QSJNBSZ DPOTUSVDUPS
!+WN0WFSMPBET Ξϊςʔγϣϯ ⋆ +BWB ༻ͷ 0WFSMPBENFUIPE Λ࡞ͬͯ͘ΕΔ +BWB ͔ΒσϑΥϧτҾࢀরͰ͖ͳ͍ɻ
/P4VDI.FUIPE&YDFQUJPO Λు͔ΕΔ !+WN0WFSMPBETΞϊςʔγϣϯΛՃ͢Δͱ +BWB ͔Βݟͨͱ͖ʹϝιου͕ଟॏఆٛ͞ΕΔ ,PUMJO ͔Β "OESPJE4UVEJP ͷ *OUFOTJPO Ͱ !+WN0WFSMPBET ͳίϯετϥΫλΛ ࡞ͬͯ͘ΕΔΑ͏ʹ "EE"OESPJE7JFXDPOTUSVDUPSTVTJOH!+WN0WFSMPBET
$BMMCBDL QVCMJDDMBTT-JTUFOFS4BNQMF7JFXFYUFOET7JFX\ QSJWBUF$BMMCBDLDBMMCBDL QVCMJDWPJEIPHF \ JG DBMMCBDLOVMM SFUVSO DBMMCBDLPO)PHF
^ QVCMJDJOUFSGBDF$BMMCBDL\ QVCMJDWPJEPO)PHF ^ ^ QVCMJDDMBTT.BJO"DUJWJUZFYUFOET"QQ$PNQBU"DUJWJUZ JNQMFNFOUT-JTUFOFS4BNQMF7JFX$BMM#BDL\ !0WFSSJEF QVCMJDWPJEPO)PHF \ DBMMCBDLT ^ ^ ⋆ ී௨ͷϦεφʔύλʔϯ
$BMMCBDL DMBTT-JTUFOFS4BNQMF7JFX7JFX\ QSJWBUFWBSDBMMCBDL$BMMCBDL OVMM QSJWBUFGVOIPHF \ DBMMCBDL PO)PHF TBGFDBMM
^ JOUFSGBDF$BMMCBDL\ GVOPO)PHF ^ ^ DMBTT.BJO"DUJWJUZ"QQ$PNQBU"DUJWJUZ -JTUFOFS4BNQMF7JFX$BMMCBDL\ PWFSSJEFGVOPO)PHF \ DBMMCBDLT ^ ^ ⋆ ͦͷ·· ,PUMJO ʹͯ͠ΈΔ
$BMMCBDL DMBTT-JTUFOFS4BNQMF7JFX7JFX\ 㕉ᡔә◌क✖ԒԾԠԏԗӔӘӑӇӘӨӨՉ՛ԸӕᛝӉӅӳӶӵ WBSPO)PHF 6OJU OVMM QSJWBUFGVOIPHF \
PO)PHF JOWPLF ^ ^ DMBTT.BJO"DUJWJUZ"QQ$PNQBU"DUJWJUZ \ PWFSSJEFGVOPO$SFBUF TBWFE*OTUBODF4UBUF#VOEMF \ MJTUFOFS4BNQMF7JFXPO)PHF\ DBMMCBDLT ^ ^ ^ ⋆ ؔϦςϥϧͱ JOWPLF Ͱ -JTUFOFS ͕ෆཁʹ
$BMMCBDL QVCMJDDMBTT+BWB.BJO"DUJWJUZFYUFOET"QQ$PNQBU"DUJWJUZ\ !0WFSSJEF QSPUFDUFEWPJEPO$SFBUF !/VMMBCMF#VOEMFTBWFE*OTUBODF4UBUF \
MJTUFOFS4BNQMF7JFXTFU0O)PHF OFX'VODUJPO6OJU \ !0WFSSJEF QVCMJD6OJUJOWPLF \ DBMMCBDLT SFUVSOOVMM ^ ^ ^ ^ ⋆ +BWB Ͱѻ͏ͱ͖ 'VODUJPO/ ΛҾʹ༩͑Δ 'VODUJPO/ 㮢/ әᐠᡔӘંᡔ㮣 ә ,PUMJO Ә㕉ᡔѭ 6OJU ӔӴ OVMM Ӽ㈘Ӄ
$BMMCBDL ⋆ Ҿ͕ଟ͘ͳͬͨͱ͖Λߟ͑Δ ⋆ ֦େɾॖখɾεΫϩʔϧͰ͖Δ *NBHF7JFX Ͱഒ࠲ඪɺΈग़͠Λ௨ͯ͠΄͍͠ WBSPO$IBOHF4UBUF
TDBMF'MPBU Y'MPBU Z'MPBU PWFS9*OU PWFS:*OU 6OJU OVMM
$BMMCBDL ⋆ +BWB ίʔυͰඇৗʹ͍ 'VODUJPO ʹͳΔ ⋆ ิͰࣗಈੜ͢ΔͱҾ໊͕Ṗ IPHF7JFXTFU0O$IBOHF4UBUF
OFX'VODUJPO'MPBU 'MPBU 'MPBU *OUFHFS *OUFHFS 6OJU \ !0WFSSJEF QVCMJD6OJUJOWPLF 'MPBUB'MPBU 'MPBUB'MPBU 'MPBUB'MPBU *OUFHFSJOUFHFS *OUFHFSJOUFHFS \ SFUVSOOVMM ^ ^ ⧞ӑᥨҷᝪҲӵӘәǘ
$BMMCBDL IPHF7JFXPO$IBOHF4UBUF\ 䖕 GM'MPBU GM'MPBU GM'MPBU
J*OU J*OU\⧞ಌ⇰ᘻҿӶӉᐠᡔൻ GVODUJPOT ^ ^ ⋆ ,PUMJO Ͱ *OUFOTJPO ͨ࣌͠ͷҾ໊͕ʜ +BWB ӘӒҷӲӴ㗾ӕӔӍӉǘ㮹
$BMMCBDL ʹ͍ͭͯࢥ͏͜ͱ ⋆ ؔϦςϥϧͰϦεφʔύλʔϯഉআͰ͖Δ ⋆ ϦεφʔύλʔϯΛͬͨ΄͏͕ϝϯςφϯε ͍͢͠έʔε͍ͬͺ͍͋Γͦ͏ ෳͷҾ͕ଘࡏ͢Δͱ͖ ଟͷίʔϧόοΫؔΛ࣋ͭͱ͖
⋆ ٯʹར༻ͨ͠ํ͕ྑͦ͞͏ͳέʔε͋Γͦ͏ ඞͣఆٛ͢Δඞཁͷͳ͍ίʔϧόοΫ͕͋Δ࣌ FH(FTUVSF%FUFDUPS(FTUVSF-JTUFOFS ͷ μϒϧλοϓͷݕ͚ͩར༻͍ͨ͠ɺͱ͔
ࢀߟจݙ ⋆ +BWB ͔Βͷར༻ΛࢹʹೖΕͨ ,PUMJO ίʔυͰ ԿΛ͢Δ͖͔2JJUB IUUQRJJUBDPNKNBUTVJUFNTDCBBDCDCG ⋆
+BWB,PUMJO ࠞ߹ϓϩδΣΫτͰؾΛ͚͍ͭͯΔ͜ͱɻ IUUQMWMBIBUFOBCMPHDPNFOUSZ ⋆ ,PUMJO ͰίʔϧόοΫ2JJUB IUUQRJJUBDPN""LJSB!HJUIVCJUFNTFCBBFFECED