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ComposeͷModalBottomSheet (·ͩ)প 2023.03.07 Mobileษڧձ Wantedly × νʔϜϥϘ #8 Bunjiro Miyoshi
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About Me • νʔϜϥϘॴଐ • (ࣗশ)ϚϧνϓϥοτϑΥʔϜܳਓ • Jetpack Compose࠷ߴʂʂ
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େલఏ • material:1.4.0-beta02 • material3:1.1.0-alpha07
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ComposeͷBottom Sheetେ͖͘2छྨ • BottomSheetScaffold • ModalBottomSheet ͜ͷߏM2M3Ұॹ
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BottomSheetSca ff old https://developer.android.com/images/reference/androidx/compose/material/standard-bottom-sheet.png
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ModalBottomSheet https://developer.android.com/images/reference/androidx/compose/material/modal-bottom-sheet.png
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Sca ff old • SwipeͷdisableͳͲͷΓସ͑ͷύϥϝʔλ͕ͪΌΜͱ༻ҙ͞Ε͍ͯΔ • όοΫΩʔ੍ޚΑ͠ͳʹೖ͍ͬͯΔ • NestedScrollConnectionपΓpublisher(Google)ଆྀ͍ۤͯ͠Δ༷ ࢠ • (·ͩͪΌΜͱͬͯͳ͍ͷͰӕ͔͠Εͳ͍͕)એݴతUIͰهड़͢Δ ʹࠓͷBottomSheetScaffoldͷ΄͏͕طଘΑΓ࣮ͦ͢͠͏
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Modal#͜͏͍͏ͷࠓ·ͰͲ͏͍ͯͨ͠ʁ • தؒঢ়ଶΛͳͯ͘͠ҰؾʹFull ScreenͰද͍ࣔͨ͠ʂ • CancelͰ͖ͳ͍Α͏ʹ͍ͨ͠ʂ
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Modal#ҰؾʹFull ScreenͰද͍ࣔͨ͠ • BottomSheetBehaviorΛҾͬுͬͯ͘Δ • BottomSheetBehavior.STATE_EXPANDEDΛηοτ • peek heightΛ্ॻ͖ XML
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Modal#CancelͰ͖ͳ͍Α͏ʹ͍ͨ͠ • BottomSheetDialogͷ߹ • setCancelableʹfalseΛઃఆ • BottomSheetDialogFragmentͷ߹ • DialogInterfaceͷisCancelableʹfalseΛઃఆ • BottomSheetͷΩϟϯηϧܖػͰ͋ΔSwipe DownɺBack Keyͷ྆ํͷ ରԠ͕؆ܿʹͰ͖Δ XML
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Modal#CancelͰ͖ͳ͍Α͏ʹ͍ͨ͠ https://github.com/material-components/material-components-android/blob/master/lib/java/com/google/android/material/ bottomsheet/BottomSheetDialog.java#L156-L165 XML
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Modal#ݱঢ় • ҰؾʹFull ScreenͰදࣔˠͰ͖Δ • CancelͰ͖ͳ͍Α͏ʹ͢ΔˠͰ͖ͳ͍(ࠔΔ Compose
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ҰؾʹFull ScreenͰදࣔ#M2 ɾSheetContentΛ fi llMaxSizeʹઃఆ͢Δ ɾModalBottomSheetStateͷskipHalfExpandedΛtrueʹઃఆ͢Δ Compose
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ҰؾʹFull ScreenͰදࣔ#M3 ɾModalBottomSheetࣗମΛ fi llMaxSizeʹઃఆ͢Δ ɾSheetStateͷskipHalfExpandedΛtrueʹઃఆ͢Δ Compose
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Modal#CancelͰ͖ͳ͍Α͏ʹ͢Δ • ཁ݅ • ྖҬ֎λοϓɺSwipe DownɺBack KeyͰด͡ͳ͍Α͏ʹͳΔ͜ͱ IF͕༻ҙ͞Ε͍ͯΔΑ͏ʹݟ࣮͑ͯ༻ҙ͞Εͯͳ͍ʂ Compose
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Modal#CancelͰ͖ͳ͍Α͏ʹ͢Δ • ઌʹComposeͷModalBottomSheetͷ࣮Λཧղͯ͠ ModalBottomSheetͷίʔυΛίϐʔͯ͠͏ • M2ɿ΄΅ී௨ͷը໘ͱ࣮ͯ͠͞Ε͍ͯΔ • M3ɿwindow(Popup)ͱ࣮ͯ͠͞Ε͍ͯΔ ͲͷΑ͏ʹͯ͠BottomSheetΛը໘ʹͤΔ͔ͱ͍͏ҟͳΔ Compose
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Box( Scrim() Surface( Column() ) )
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Modal#ྖҬ֎λοϓΛࢭΊΔ • M2ɺM3ڞ௨ɿScrimʹઃఆ͞Ε͍ͯΔdetectTapGesturesΛ֎ͤΔΑ ͏ʹ࣮͢Δ Կ͕͋ͬͯઈରBottomSheetΛด͡ΔΑ͏ʹઃఆ͞Ε͍ͯΔ onDismissRequestͷϥϜμΛࠩ͠ସ͑Δ Compose
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Modal#Swipe DownΛࢭΊΔ • M2ɺM3ڞ௨ɿSurfaceʹઃఆ͞Ε͍ͯΔModi fi er.draggableΛ disableʹ͢Δ Compose
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Modal#Swipe DownΛࢭΊΔM2 ໊લҧ͏͕தdraggable Compose
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Modal#Swipe DownΛࢭΊΔM3 ໊લҧ͏͕தdraggable Compose
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Modal#Back KeyΛࢭΊΔ • M2ɿcontentͰBackHandlerΛ࣮ͬͯ͢Δ BackHandlerͰBottomSheetState ͷΛݟͯ͋Ε͜Ε͢Δ Compose
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Modal#Back KeyΛࢭΊΔ • M2ɿBottomSheetStateͷcon fi rmValueChangeͰϋϯυϦϯά Compose
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• M3ɿΩϟϯηϧͰ͖ͳ͍Popupͱͯ͠දࣔ͢ΔΑ͏ʹ࣮Λࠩ͠ସ ͑Δ Modal#Back KeyΛࢭΊΔ Compose
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݁ • ComposeͷModalBottomSheetপ • ৮Εͯͳ͍͕StatusBarColorͷରԠͳͲՃͰ࣮͠ͳ͍ͱීஈ xmlͰ͍ͬͯΔBottomSheetDialogͱಉ͡ײ͡ʹͳΒͳ͍ • ࠓͦͷ࣌Ͱͳ͍ • AndroidViewʹBottomSheetDialogFragmentΛಥͬࠐΉܗ͕Α͍