No more Adapter with Epoxy and Data Binding

1. No more Adapter with Epoxy and Data Binding @takuji31 ژ౎Dev͔;͐ #5
2. ࣗݾ঺հ
3. ࣗݾ঺հ • @takuji31 id:takuji31 • Takuji Nishibayashi • Hatena Co., Ltd. • App Team • δϟϯϓϧʔΩʔʂ • ίϛοΫDAYS • ΧΫϤϜ
4. ࣗݾ঺հ • Android • Kotlin • ! https://blog.takuji31.jp • " https://nazuna.takuji31.jp • # $ https://photo.takuji31.jp
5. RecyclerView
6. ࢖ͬͯͳ͍ਓ͍·ͤΜΑͶʁ
7. ViewHolder + Adapter
8. ΦϓγϣϯͰ DiffUtil
9. blog.takuji31.jp/entry/kanmoba17
10. ෳࡶͳը໘
12. Ͳ͏࣮ݱ͢Δʁ
13. खͰؤுΔ
14. ViewHolderΛview type͝ͱʹ࡞Δ
15. onCreateViewHolderͰ֘౰͢Δ ViewHolderΛ࡞Δ
16. onBindViewHolderͰViewHolderͷ ܕΛݟͯ஋Λઃఆ
17. มߋݕ஌
18. DiffUtilͰؤுΔ
19. !
20. Section Library
21. ※ ͍͔ͭ͘ϥΠϒϥϦʔ͕͋Γ·͢ ͕Ұൠతͳ࿩Ͱ͢
22. view typeͷ୅ΘΓʹSectionͱ͍͏ ΫϥεΛ࢖͏
23. Section class WorkSection(val items:List<Work>): Section<WorkViewHolder>() { override fun onCreateViewHolder(inflator: LayoutInflator, parent: ViewGroup): WorkViewHolder { return WorkViewHolder(inflator.inflate(R.layout.recycle_item_work, parent, false)) } override fun onBindViewHolder(viewHolder: WorkViewHolder, position: Int) { val work = items[position] viewHolder.title = work.title Picasso.get().load(work.imageUri).into(viewHolder.imageView) } }
24. Adapter val adapter = Adapter() adapter.addSection(BannerSection(works)) adapter.addSection(WorkSection(works.take(10))) adapter.addSection(EntrySection(works)) adapter.addSection(WorkSection(works.drop(10)))
25. ύοͱݟ؆୯ͦ͏
26. ΫϦοΫΠϕϯτͷ఻ୡͲ͏͢Δ…ʁ class WorkSection(val items:List<Work>, val onClick: (Work) -> Unit): Section<WorkViewHolder>() { override fun onCreateViewHolder(inflator: LayoutInflator, parent: ViewGroup): WorkViewHolder { return WorkViewHolder(inflator.inflate(R.layout.recycle_item_work, parent, false)) } override fun onBindViewHolder(viewHolder: WorkViewHolder, position: Int) { val work = items[position] viewHolder.title = work.title Picasso.get().load(work.imageUri).into(viewHolder.imageView) viewHolder.itemView.setOnClickListener { onClick() } } }
27. Adapter val adapter = Adapter( {work -> viewModel.onWorkSelected(work)}, {entry -> viewModel.onEntrySelected(entry)}, {banner -> viewModel.onBannerSelected(banner)}, ) adapter.addSection(BannerSection(works)) adapter.addSection(WorkSection(works.take(10))) adapter.addSection(EntrySection(works)) adapter.addSection(WorkSection(works.drop(10)))
28. ͪΐͬͱ໘౗
29. ͦ΋ͦ΋
30. Adapter -> Section -> ViewHolder
31. ֊૚͕૿͑Δ
32. ঢ়ଶΛόϥόϥʹ͍࣋ͬͯͨΓ͢Δ ͱ෮ݩͰࢮ͵
33. Ϋϥε਺૿͑Δ
34. ॳݟͰΊͬͪΌΉ͍ͣ
35. Epoxy
36. github.com/airbnb/epoxy
37. No more
38. ViewHolder
39. notifyDataSetChanged()
40. Adapter
41. Carousel support
42. Data Binding Friendly
43. Kotlin DSL support!!!
44. build.gradle dependencies { implementation "com.airbnb.android:epoxy:3.3.0" implementation "com.airbnb.android:epoxy-databinding:3.3.0" kapt "com.airbnb.android:epoxy-processor:3.3.0" }
45. package-info.java @EpoxyDataBindingPattern(rClass = R.class, layoutPrefix = "recycler") package jp.takuji31.epoxyexample; import com.airbnb.epoxy.EpoxyDataBindingPattern;
46. recycler_item_work.xml <layout> <data> <variable name="work" type="jp.takuji31.epoxyexample.model.Work" /> <variable name="onClick" type="android.view.View.OnClickListener" /> </data> <androidx.cardview.widget.CardView android:onClick="@{onClick}"> <androidx.constraintlayout.widget.ConstraintLayout> <ImageView app:imageUri="@{work.imageUri}"/> <TextView android:text="@{work.title}"/> </androidx.constraintlayout.widget.ConstraintLayout> </androidx.cardview.widget.CardView> </layout>
47. Activity or Fragment recyclerView.withModels { works.forEach { work -> itemWork { id("work_${work.id}") work(work) } } }
49. !
50. Carousel
51. Carousel recyclerView.withModels { carousel { id("entryCaroucel") withModelsFrom(entries) { entry -> ItemEntryBindingModel_() .id("entry_${entry.id}") .entry(entry) } } }
53. ؆୯͗͢Ͱ͸
54. ෳࡶͳϨΠΞ΢τ
55. ෳࡶͳϨΠΞ΢τ Carousel.setDefaultGlobalSnapHelperFactory(null) carousel { id("bannerCarousel") withModelsFrom(banners) { ItemBannerBindingModel_() .id("banner_${it.id}") .banner(it) } } works.take(10).forEach { work -> itemWork { id("work_${work.id}") work(work) } }
56. ෳࡶͳϨΠΞ΢τ headerBlogEntry { id("blog_header") } carousel { id("entryCaroucel") withModelsFrom(entries) { entry -> ItemEntryBindingModel_() .id("entry_${entry.id}") .entry(entry) } } works.drop(10).forEach { work -> itemWork { id("work_${work.id}") work(work) } }
57. ׬੒ʂ
58. https://github.com/takuji31/epoxy- example
59. Enjoy RecyclerView life
60. ! ࠾༻৘ใ
61. גࣜձࣾ͸ͯͳͰ͸ɺ ͱ΋ʹʮ௅ઓʯͰ͖Δ ஥ؒΛืू͍ͯ͠·͢
62. ͜ΜͳਓΛ୳͍ͯ͠·͢ • AndroidΞϓϦΛ࡞Γ͍ͨਓ • iOSΞϓϦΛ࡞Γ͍ͨਓ • ͋Δ͍͸྆ํ • ͳΜͳΒαʔόʔαΠυ΋
63. https://hatenacorp.jp/recruit/