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Android Architecture Componentの Navigationで少しはまった話
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bigbackboom
July 23, 2019
Technology
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Android Architecture Componentの Navigationで少しはまった話
bigbackboom
July 23, 2019
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Transcript
Android Architecture Componentͷ NavigationͰগ͠·ͬͨ
ࣗݾհ — ٠/bigbackboom — CBcloudגࣜձࣾɹ
Navigationͱʁ — Google I/O 2018Ͱൃද͞ΕͨAndroid Architecture ComponentͷҰͭ — FragmentؒͷભҠΛϘτϜφϏͳͲͰߦ͏ͳͲෳࡶͳཁ݅ ͷͨΊʹ։ൃ͞Εͨɻ
— backstackͷཧ͕͍͠ — fragmentࣗମͷlifecycle͕ෳࡶ — ݟͨiOSͷstoryboardͳͲʹ͍͕ۙɺ༻ൣғ͍ͩ
ͳͥϘτϜφϏͰNavigationΛ͏ඞཁ͕͋Δʁ — Α͘ΘΕ͍ͯͨɺViewPager+BottomNavigationView ׂͱ࣮͕ෳࡶʢ࡞Δύʔπ͕ଟ͍ʣɻ — ViewPagerը໘ͷΩϟογϡॲཧ͕ಈ͘ͷͰɿ — ෳը໘͕ಉ࣌ʹಡΈࠐ·Εɺىಈ͕͘ͳΔ — ΩϟογϡʹΑͬͯɺը໘͕ഁغ͞Εબ࣌ʹҰ͔
ΒಡΈࠐ·ΕΔɻ
BottomNavigationView + NavigationΛ࣮ — ͜ͷrepositoryΛϕʔεʹΘ ͤͯΒ͍·ͨ͠ɻ — ߏӈͷը૾ͷΑ͏ʹͳ͍ͬͯ ·͢ɻ
λϒຖͷঢ়ଶҡ࣋ — Կ͠ͳ͍ͱɺ DashboardFragmentͱ NotificationsFragmentλϒ͕ બ͞ΕΔͨͼʹॳظԽ͞ΕΔ — ͦΕΛආ͚ΔͨΊʹɺ BottomNavigationViewͱ FragmentͷੜΛհ͢Δɺ
FragmentNavigatorΛࣗ࡞͢Δ ඞཁ͕͋Δɻ
— ࢀߟrepositoryͰ KeepStateNavigatorͱ͍͏ͷ Λ࡞͍ͬͯΔɻ — ·ͨɺBottomNavigationViewͱ FragmentͷؔΛఆٛͨ͠ɺ nav_graph.xmlͰ KeepStateNavigatorΛ༻ͯ͠ ͍Δ
ͰɾɾɾԿʹ·ͬͨͷʁ — Activity͔ΒFragmentʹΛ͢͜ͱ͕Ͱ͖ͳ͍ɾɾɾ — ௨ৗͰ͋Ε,ԼهͷΑ͏ʹ͢ΕΛϑϥάϝϯτʹͤ Δɻ val bundle = Bundle().apply
{ putString("NOTIFICATION_KEY", "bigbacbkboom is here") } NavController.navigate(item.itemId, bundle)
͕͔ͩ͠͠ɾɾɾ
null ͩͱɾɾɾ
దʹͨΓΛ͚ͭΔ
KeepStateNavigator෦ͰσόοΨͰࢭΊͯΈΔ — Έ͚ͬͽΐΜ
KeepStateNavigator.kt ίʔυΛमਖ਼ ҎԼͷߦΛҰͭՃ͢Δ͚ͩɻ var fragment = manager.findFragmentByTag(tag) fragment?.arguments = args
if (fragment == null) { val className = destination.className fragment = manager.fragmentFactory.instantiate(context.classLoader, className) transaction.add(containerId, fragment, tag) } else { transaction.attach(fragment) }
मਖ਼༰ʁ — fragmentΛੜ͢Δͱ͖ʹɺBundleΛͯ͋͛͠ΔॲཧΛ ॻ͚͍͍ͱ͍͏ࢸۃ୯७ͳͷͰ͢ɻ — ͨͩɺਓͷίʔυΛૉʹίϐʔͯͨ͠ͷͰɺΓ͜Ε ʹؾ͕ͭ͘ͷʹۤ࿑͠·ͨ͠ɻ
݁ — NavigationViewPage+BottomNavigationViewrΑΓ ύʔπ͕গͳָ͘ɻ — ͲΜͳ͜ͱಉ͡Ͱ͕͢ɺΓͲΜͳ͜ͱͪΌΜͱཧ ղ͠ͳ͍ͱ௧͍ΛݟΔɻ
We are Hiring! — Ұॹʹಇؒ͘Λ୳͍ͯ͠·͢ɻ — αʔϏεࢤͷํ — ੵۃతʹఏҊͯ͠৽͍ٕ͠ज़ͷΤϯδχΞϦϯάΛߦ͍ͨ ͍ํ
— ϚωʔδϝϯτΛ͍ͨ͠ํ https://www.wantedly.com/companies/cb-cloud