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UICollectionView 基礎編
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sakaue
November 08, 2019
Programming
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UICollectionView 基礎編
社内勉強会で使用した資料です。
Tipstar #1 UICollectionViewの基礎
sakaue
November 08, 2019
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Transcript
6*$PMMFDUJPO7JFX جૅฤ 5JQTUBS/Pࣾษڧձ !UPTBLB
ΞδΣϯμ w 6*$PMMFDUJPO7JFXͱʁ w Έɾίϯηϓτ w ࣮ w %FMFHBUF w
ߋ৽ύϑΥʔϚϯε
6*$PMMFDUJPO7JFX ͱʁ
None
None
"OPCKFDUUIBUNBOBHFTBOPSEFSFE DPMMFDUJPOPGEBUBJUFNTBOEQSFTFOUT UIFNVTJOHDVTUPNJ[BCMFMBZPVUT
"OPCKFDUUIBUNBOBHFTBOPSEFSFE DPMMFDUJPOPGEBUBJUFNTBOEQSFTFOUT UIFNVTJOHDVTUPNJ[BCMFMBZPVUT σʔλΞΠςϜͷॱং͚ΒΕͨίϨΫγϣϯΛཧ͠ɺ ΧελϚΠζՄೳͳϨΠΞτΛ ༻ɾදࣔ͢ΔΦϒδΣΫτɻ
ͭ·ΓϦετදࣔʁ
ͭ·ΓϦετදࣔʁ ͋ͬͯΔ͚Ͳඍົʹҧ͏
-JTUͰͳ͘$PMMFDUJPO 6*5BCMF7JFXॎܕϦετʹಛԽ 6*$PMMFDUJPO7JFXॎԣάϦουͳΜͰ͟͝Ε
)*($PMMFDUJPOT w ඪ४ͷߦ·ͨάϦουϨΠΞτͰेͳ߹ɺࠜ ຊతͳ৽͍͠σβΠϯΛ࡞͠ͳ͍ w ςΩετͷίϨΫγϣϯͷΘΓʹςʔϒϧΛ༻͢Δ͜ ͱΛݕ౼͢Δ w ಈతͳϨΠΞτͷมߋΛ͢ΔࡍؾΛ͚ͭΔ
https://developer.apple.com/design/human-interface-guidelines/ios/views/collections/
Έɾίϯηϓτ
8FCͷϦετදࣔ6*4DSPMM7JFXͱͷҧ͍ දࣔྖҬͷηϧΠϯελϯεΛੜɾϦαΠΫϧΛߦ͏
8FCͷϦετදࣔ6*4DSPMM7JFXͱͷҧ͍ දࣔྖҬͷηϧΠϯελϯεΛੜɾϦαΠΫϧΛߦ͏ গͳ͍ϝϞϦऑ͍$16Ͱ ύϑΥʔϚϯεΑ͘දࣔ͢ΔͨΊʹඞཁ
ίϯηϓτ w -BZPVU w %BUB4PVSDF w %FMFHBUF
6*$PMMFDUJPO7JFX-BZPVU w ίϯςϯπͷஔ w ϨΠΞτؒͰͷΞχϝʔγϣϯ
6*$PMMFDUJPO7JFX'MPX-BZPVU w 6*$PMMFDUJPO7JFX-BZPVUͷαϒΫϥε w 6*$PMMFDUJPO7JFX%FMFHBUF'MPX-BZPVUFYUFOET 6*$PMMFDUJPO7JFX%FMFHBUF w ϥΠϯϕʔεͷϨΠΞτ
6*$PMMFDUJPO7JFX'MPX-BZPVU w 6*$PMMFDUJPO7JFX-BZPVUͷαϒΫϥε w 6*$PMMFDUJPO7JFX%FMFHBUF'MPX-BZPVUFYUFOET 6*$PMMFDUJPO7JFX%FMFHBUF w ϥΠϯϕʔεͷϨΠΞτ
6*$PMMFDUJPO7JFX%BUB4PVSDF w ίϯςϯπͷఏڙ w ηΫγϣϯͱΞΠςϜͷݸఏڙ
6*$PMMFDUJPO7JFX%FMFHBUF w 0QUJPOBM w 6*4DSPMM7JFX%FMFHBUFͷαϒΫϥε w ͍ΖΜͳ੍ޚ w )JHIMJHIUJOH
w 4FMFDUJPO
6.-
4BNQMF
4BNQMF
4BNQMF
4BNQMF ͻͱ·ͣ͜Εॻ͍ͱΔ͚Ͳɺ ࣮ࡍ͜ΕͬͯͳΜͳΜͩʁ
4BNQMF ͻͱ·ͣ͜Εॻ͍ͱΔ͚Ͳɺ ࣮ࡍ͜ΕͬͯͳΜͳΜͩʁ ͜Εॻ͍͚ͨͩͰͳΜͰ ॻ͍ͨϝιου͕࣮ߦ͞ΕΔΜͩʁ
%FMFHBUFҠৡ
%FMFHBUF େࠇఱ ୭Ͱ͍͍͔Β ଧͪग़ͷখṀΛ ୭͔ʹ;ͬͯ΄͍͠ͳ͊ʜʜ
%FMFHBUF େࠇఱ ୭Ͱ͍͍͔Β ଧͪग़ͷখṀΛ ୭͔ʹ;ͬͯ΄͍͠ͳ͊ʜʜ ϫΠ͕ৼΓ·͢Α ೣ
%FMFHBUF େࠇఱ ͋Γ͕ͱ͞Μʈʈ ೣ
%FMFHBUF େࠇఱ αϯΩϡͳʈʈ ཾ ϫΠৼΓ·͢Α
ίʔυʹͯ͠ΈΔ
ίʔυʹͯ͠ΈΔ 1SPUPDPM ఆٛ͞ΕͨϝιουɺϓϩύςΟΛ ࣮͠ͳ͚ΕͳΒͳ͍
ίʔυʹͯ͠ΈΔ େࠇఱখṀ৮ΕΔ୭͔Λ͍࣋ͬͯΔ͔
ίʔυʹͯ͠ΈΔ ΠϯελϯεԽ
ίʔυʹͯ͠ΈΔ ೣΛେࠇఱʹ͠ͱ͘
ίʔυʹͯ͠ΈΔ େࠇఱ͕ৼΕͬͯݴΘΕͨͷͰʜʜ
ίʔυʹͯ͠ΈΔ େࠇఱࣗͷ͍࣋ͬͯΔ খṀৼΕΔͭʹৼΒͤΔ ʢେࠇఱ୭͔ڵຯͳ͍͠ɺΒͳ͍ʣ
ίʔυʹͯ͠ΈΔ ݁Ռɺຕฦͬͯ͘Δ
6*$PMMFDUJPO7JFX%FMFHBUF 6*$PMMFDUJPO7JFX%BUB4PVSDFҰॹ
%FMFHBUF 6*7JFX$POUSPMMFS͘Μ 6*$PMMFDUJPO7JFX
%FMFHBUF 6*7JFX$POUSPMMFS͘Μ 6*$PMMFDUJPO7JFX ͓͍ɺ6*$PMMFDUJPO7JFX Ϧϩʔυͯ͘͠Ε SFMPBE%BUB
%FMFHBUF 6*7JFX$POUSPMMFS͘Μ 6*$PMMFDUJPO7JFX ྃղͰ͢ʜʜɻ දࣔ͢ΔΞΠςϜͷԿݸͰ͔͢ʁ
%FMFHBUF 6*7JFX$POUSPMMFS͘Μ 6*$PMMFDUJPO7JFX Μʔʜʜ̐̌ݸͰ͢ ྃղͰ͢ʜʜɻ දࣔ͢ΔΞΠςϜͷԿݸͰ͔͢ʁ
%FMFHBUF 6*7JFX$POUSPMMFS͘Μ 6*$PMMFDUJPO7JFX Μʔʜʜ̐̌ݸͰ͢ ྃղͰ͢ʜʜɻ දࣔ͢ΔΞΠςϜͷԿݸͰ͔͢ʁ
%FMFHBUF 6*7JFX$POUSPMMFS͘Μ 6*$PMMFDUJPO7JFX Μʔʜʜ̐̌ݸͰ͢ ྃղͰ͢ʜʜɻ දࣔ͢ΔΞΠςϜͷԿݸͰ͔͢ʁ ͜ΕΜʂ
%FMFHBUF 6*7JFX$POUSPMMFS͘Μ 6*$PMMFDUJPO7JFX 0,Ͱ͢ɻ ϨΠΞτ։࢝͠·͢Ͷɻ ʜʜݸͷ$FMMͷαΠζ͍ͩ͘͞ɻ ͍ɻ
%FMFHBUF 6*7JFX$POUSPMMFS͘Μ 6*$PMMFDUJPO7JFX Μʔʜʜ̐̌ݸͰ͢ ྃղͰ͢ʜʜɻ දࣔ͢ΔΞΠςϜͷԿݸͰ͔͢ʁ ͜ΕΜʂ
%FMFHBUF 6*7JFX$POUSPMMFS͘Μ 6*$PMMFDUJPO7JFX 0,Ͱ͢ɻ ಡΈࠐΈ·͢Ͷɻ ʜʜݸͷ$FMM͍ͩ͘͞ɻ ͍ɻ
%FMFHBUF 6*7JFX$POUSPMMFS͘Μ 6*$PMMFDUJPO7JFX Μʔʜʜ̐̌ݸͰ͢ ྃղͰ͢ʜʜɻ දࣔ͢ΔΞΠςϜͷԿݸͰ͔͢ʁ ͜ΕΜʂ
ͭ·Γʜʜ 6*$PMMFDUJPO7JFXͷඳըϥΠϑαΠΫϧʹ߹Θͤͯɺ Ҡৡ͍ͯ͠Δ%FMFHBUF͔ΒσʔλΛΒ͏ͨΊɺ ϝιουΛୟ͍͍ͯΔɻ
͜ΕͰ%FMFHBUFᘳʂ
ύϑΥʔϚϯε
4BNQMF
4BNQMF ҉తʹSFMPBE%BUB Λߦ͍ͬͯ·͕͢ʜ ΄Μͱʹશ෦Ϧϩʔυ͍͍ͯ͠ͷ͔ʁ
SFMPBE%BUB ͷੑ࣭ w શ෦ಡΈࠐΈ w ύϑΥʔϚϯεѱ͍ w Ξχϝʔγϣϯ͠ͳ͍
ࠩߋ৽͠·͠ΐ͏ʂ
ࠩߋ৽"1* ·ͱΊͯߋ৽Ͱ͖·͢
ҙ w QFSGPSN#BUDI6QEBUFΫϩʔδϟͷهड़ॱʹؔΘΒ ͣɺEFMFUFˠJOTFSUʹͳΔɻ w EFMFUF*UFNT w ߋ৽͕Δલͷ*OEFY1BUIΛݩʹ߱ॱ w JOTFSU*UFNT
w আ͕࣮ߦ͞Εͨ͋ͱͷ*OEFY1BUIΛݩʹঢॱ
ҙ w %FMFUFͱ*OTFSUΛͦΕͧΕશͯूΊΔ w %FMFUFΛ࠷ॳʹ߱ॱͰߦ͏ w *OTFSU࠷ޙʹঢॱͰߦ͏
Ͱࠩͷܭࢉͬͯ໘ʂ
J04 6*$PMMFDUJPO7JFX%J⒎BCMF%BUB4PVSDF
͋Γ͕ͱ͏͍͟͝·ͨ͠
ࢀߟʹͳͬͨαΠτ https://qiita.com/shiz/items/0e363219a0151d790d03 https://dev.classmethod.jp/smartphone/ios-10-uicollectionview-pre-fetching/ https://www.bignerdranch.com/blog/custom-collection-view-layouts-with-tvos-part-1/