An introduction to Android development

Transcript

1. An introduction to Android development
2. Why I do this?
3. Deep dive into Android
4. • Activity • Fragments • Views • *Listener Vocabulary • Adapters • DAO • Providers • Service
5. ToolKit
7. App Architecture • MVC: ◦ Activity, Fragments ◦ DAO, Providers ◦ Adapters, Views
8. App Architecture • MVC: ◦ Activity, Fragments ◦ DAO, Providers ◦ Adapters, Views • Cursor • Service
9. Pitfalls
10. Pitfalls • Emulator • findViewById hell • Huge Activity • Android specific SDK
11. • Use Real device • Speed up your emulator (Intel HAXM) • Use an alternative Emulator
12. findViewById hell • Use Kotlin Android Extensions • Use Dependency Injection like butterknife or dagger
13. Huge Activity • Decompose it! • Use RxJava/RxAndroid • Use Kotlin
14. RxJava/RxKotlin/RxAndroid getObservable() .subscribeOn(Schedulers.io()) .observeOn(AndroidSchedulers.mainThread()) .subscribe { s -> data.add(s) adapter.notifyDataSetChanged() }
15. RxJava/RxAndroid • Why? ◦ Use high level API to run asynchronous code. • How? ◦ Add custom observers and use Rx operators • When? ◦ Until it's too late. But not too soon.
16. Android specific SDK • Keep Calm and work with it • Use Guava • Use Kotlin
17. Advices • Make it simple – Android is not a Java EE! • Use linters and tests – Automate! • Later use Platform Architecture Components
18. Platform Architecture Components • LifeCycle – Handling Lifecycles with Lifecycle-Aware Components • Room – ORM • LiveData – like Rx • Paging – to build paged lists with Room
19. Summary
21. References • Butterknife • Dagger • Guava • Platform Architecture Components • RxAndroid