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RecyclerViewでViewPagerっぽいの作ろうとして頓死した話
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bigbackboom
March 19, 2019
Technology
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RecyclerViewでViewPagerっぽいの作ろうとして頓死した話
bigbackboom
March 19, 2019
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Transcript
RecyclerViewͰ ViewPagerͬΆ͍ͷ࡞ Ζ͏ͱͯ͠ࢮͨ͠
ࣗݾհ • ໊લɿ٠/bigbackboom • ʢͳΜͪΌͬͯʣAndroid։ൃऀ • ॴଐɿגࣜձࣾΞΠελΠϧ -> CBCloudגࣜձࣾ •
גࣜձࣾΞΠελΠϧͰαʔόʔαΠυ(golang)ͷ։ൃ݉ • ࢦͤʲ;Δͨͬ͘͢ʳ
ViewPagerͱʁ • λϒͷ͋Δը໘ͷ࡞ • λϒλοϓͰͷը໘ભҠ͕Մೳ • εϫΠϓͰͷը໘ͷભҠ͕Մೳ • ॳظબͷը໘ͱࠨӈͷը໘Λ͋Β͔ ͡ΊॳظԽ͕Մೳ
ଞʹʁ • ΧϧʔηϧͳΜ͔࡞ΕΔ • ϫϯεϫΠϓͰҰݸͣͭҠಈ͢ΔΧʔ υ • ࠨӈʹνϥݟͷΧʔυΛஔ͢Δ͜ͱ Մೳ
ͳͥRecyclerViewͰ࡞Δͷʁ • ViewPagerͰΧϧʔηϧ࡞Ζ͏ͱͨ͠ΒҰը໘֎ʹΧʔυΛ ग़͞ͳ͍ͱɺߋ৽͕ը໘ʹදࣔ͞Εͳ͍ঢ়͕ग़ͨɻ • ΧϧʔηϧͷΧʔυআɺը໘֎ʹग़͢ඞཁ͕͋Δɻ
͜ΜͳΧϧʔηϧΛ࡞ͬͨͱ͖
σʔλ͕มߋ͞Εͯɾɾɾ
Ұը໘֎
Α͏͘༰͕มΘΔ
আͷ߹
3Λআʂө͞Εͣ...
Ұը໘֎ʹग़ͯ͠
আ͕ө
ͰRecyclerViewͳΒ • ߋ৽͕ଈ࣌ө • Ϧιʔεͷ༻গͳΊ
ํ • ϫϯεϫΠϓͰɺΧʔυ͕Ұݸಈ͘εϫΠϓΛ࣮ݱ • ແݶͷεΫϩʔϧΛ࣮ݱ͢Δ
Χʔυ͕Ұݸಈ͘εϫΠϓΛ࣮ݱ • PagerSnapΛRecyclerViewʹ͚ͩ͢ͰOK val helper = PagerSnapHelper() helper.attachToRecyclerView(this)
ແݶͷεΫϩʔϧΛ࣮ݱ͢Δ • ͪ͜ΒΛࢀߟʹ͠·ͨ͠ • ϦετΛ3ηοτ༻ҙͯ͠ɺ̎ηοτʹ͋Β͔͡ΊҐஔΛઃఆ ͢Δ • εϫΠϓͰ̎ηοτ͔Β֎ΕΑ͏ͱͨ͠Βɺ2ηοτͷ͍ͣ Ε͔ͷॴʹڧ੍εΫϩʔϧͤ͞Δɻ
None
݁Ռ
why? • ॳظҐஔΛ͏·͍͜ͱઃఆͰ͖ͣɺ Χʔυ͕ਅΜதʹͳΒͳ͍ࣄ͕ଟൃ ͢Δ • εϫΠϓ͢ΔͱมͳҐஔʹͳΔ
େࣦഊ • ݁Ռతʹ࣌ؒͳ͍ʹͰ͖ͦ͏ʹͳ͍ͷͰɺ͜ͷ࣌طଘ࣮Λ ར༻͢Δܗʹ͠·ͨ͠ɻ • ײɿ • ͬͪ·ͬͨͳ͊ • ViewPager͏࣌اըͱͷ༷֬ೝΛগ͠ࡉ͔͘٧ΊΔΑ
͏ʹ͠Α͏ͱࢥͬͨɻ • https:/ /github.com/BigBackBoom/LoopingPagerSnapViewer