Advanced Kotlin Patterns on Android / Idiomatic Kotlin code on Android

Presentations

• Safe fragments presentation
• Sealed classes presentation

Code

• A fragment made with Anko with a RecyclerView, its ViewHolder and item view

• Crossinline one-liner anonymous classes

  • parcelableCreator function, call-sites:
    • FoodListFragment.DataSource.Popular (parcelable singleton)
    • FoodListFragment.DataSource.FilterAndSort
    • User
  • CachedAsyncTaskLoader, call-site
  • ClickableSpan, call-site
  • TextWatcher, call-site

• Reactive data binding via broadcasts

  • bind() implementation
  • ProfileFragment — usage sample

• Safe fragments

  • Unsafe fragment implementation, Unsafe call-site
  • Safe fragment with deprecated no-arg constructor, normal constructor, and mode delegation; call-site

• Coroutines Sample use, including delay and bindings to Retrofit.

• Sealed classes

  • Object-oriented solution (contrary to original java.lang.reflect.Type), call-site
  • Functional-style solution, call-site
  • Option, Either
  • sealed class Attachment, AttachmentsFragment use-site