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Apple公式ガイドを さっくりと読んでまとめてみた UIScrollView編
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Atsushi Uchida (utwang)
October 08, 2015
Programming
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220
Apple公式ガイドを さっくりと読んでまとめてみた UIScrollView編
UIScrollViewとAutolayoutを併用するときのわかりにくかったところのまとめ
Atsushi Uchida (utwang)
October 08, 2015
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Transcript
͍·͞ΒAppleެࣜΨΠυΛ ͬ͘͞ΓͱಡΜͰ·ͱΊͯΈͨ ʙ iOS ScrollViewϓϩάϥϛϯάΨΠυฤ ʙ 2015/10/08
͜ͷΨΠυͷओͳ༰ • ScrollViewͷ࡞ͱઃఆ • εΫϩʔϧͷΠϕϯτͱ੍ޚ(delegateϝοηʔδ) • ϐϯνδΣενϟΛͬͨζʔϜ • λοϓͰͷζʔϜ •
ϖʔδϯάϞʔυʹ͍ͭͯ
͜ͷࢿྉͷ༰ • εΫϩʔϧͷઃఆ • ϐϯνΠϯɺϐϯνΞτͷઃఆ • ϋϚͬͨͱ͜Ζ(AutoLayout)
جຊػೳͱߏ • ػೳ • ը໘ʹೖΓ͖Βͳ͍ίϯςϯ πͷεΫϩʔϧ • ίϯςϯπͷ֦େ/ॖখ • Viewͷߏ
UIScrollView ᵋ ίϯςϯπͱͳΔsubview ɹɹɹ(͜͜ͰUIImageView)
εΫϩʔϧ • Scroll͢ΔͨΊʹߦ͏ઃఆ • contentSizeϓϩύςΟΛࢦఆ • subviewʹίϯςϯπͱͳΔ ViewΛՃ ੨ɿwindowαΠζ, scrollView.bounds
ɿscrollView.contentSize ബɿsubView.bounds
ϐϯνΠϯ/ϐϯνΞτ • ϐϯνΠϯ/ϐϯνΞτ͢ΔͨΊʹߦ͏ ઃఆ • ViewControllerΛUIScrollViewDelegate ʹద߹ • viewForZoomingInScrollViewͰζʔ Ϝ͍ͨ͠viewΛฦ͢
• ζʔϜͷഒΛࢦఆ • minimumZoomScale • maximumZoomScale ੨ɿscrollView.bounds,scrollView.contentSize ബɿsubView.bounds
UIScrollViewͰϋϚͬͨͱ͜Ζ • AutoLayoutͱUIScrollViewͷҰॹʹ͏ͱ͖ • εΫϩʔϧ͠ͳ͔ͬͨΓɺίϯςϯπ͕දࣔ͞Εͳ͔ͬ ͨΓઃఆʹ͔͔࣌ؒͬͨ • ͕ղফͰ͖ͨͱ͖ʹԿ͕ͩͬͨͷ͔Α͘Θ͔ Βͳ͔ͬͨ
εΫϩʔϧྖҬͷܾΊํ ίʔυͷ߹ • scrollViewͷϓϩύςΟ ͷcontentSizeΛࢦఆ͢Δ ʢϚϧνσόΠεʹରԠ ͢Δͱ͖ࡶʣ DPOUFOU4J[F TDSPMM7JFX
"' (&" &%!" #$
εΫϩʔϧྖҬͷܾΊํ Autolayoutͷ߹ • contentSizeͷେ͖͞ Autolayout͕ࣗಈͰࢉग़ • subviewͷ෯/ߴ͞ɺ੍ Ͱܾఆ͞ΕΔ ͕͜͜ҙʂ subviewͷ෯ͱߴ͕͞શʹܾ
·ΔΑ͏ʹ੍Λࢦఆ͢Δඞཁ͋Γʂ 6*7JFX 4DSPMM7JFXͷTVCWJFX TDSPMM7JFX ϥϕϧͳͲͷ7JFX
Θ͔Γʹ͍͘ཧ༝ • AutolayoutͰ1ͭͷ viewͷҐஔɺେ͖͞Λผ ͷviewͱͷ૬ରͰܾΊΔ • ීஈ্ҐͷView()͔ Β੍ΛܾΊ͍ͯ͘Ξϓ ϩʔν͢Δ͜ͱ͕ଟ͍ʢ ͣʣ
6*7JFX ϥϕϧͳͲͷ7JFX
Θ͔Γʹ͍͘ཧ༝ • UIScrollViewΛ AutolayoutͰར༻͢Δ ߹ɺԼҐͷViewͷ੍Λ ઃఆͯ͠ɺεΫϩʔϧྖ ҬͱͳΔViewͷେ͖͞Λ ܾΊΔΞϓϩʔνͱͳΔ • ٯ͖ͷΞϓϩʔνͳͷ
ͰΘ͔Γʹ͍͘ 6*7JFX ϥϕϧͳͲͷ7JFX