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Moyuru Aizawa
June 12, 2017
Technology
1
700
AutoDispose
Rx Ja Night #2
TwitterID変えました。@lvla0805 -> @MoyuruAizawa
Moyuru Aizawa
June 12, 2017
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Transcript
AutoDispose @lvla0805
lvla Ѫᖒ๖ (Moyuru Aizawa) - Kotlin engineer at CyberAgent, Inc.
- FRESH! lvla0805
override fun onCreate(…) { … Flowable.interval(1, TimeUnit.SECONDS) .subscribe { sec
-> textView.text = "${sec}s" } } Disposable
var disposable: Disposable? = null override fun onCreate(…) {
… disposable = Flowable.interval(1, TimeUnit.SECONDS) .subscribe { sec -> textView.text = "${sec}s" } } override fun onDestroy() { disposable?.dispose() } Disposable
val disposables = CompositeDisposable() override fun onCreate(…) { …
Flowable.interval(1, TimeUnit.SECONDS) .subscribe { sec -> textView.text = "${sec}s" } .addTo(disposables) } override fun onDestroy() { disposables.dispose() super.onDestroy() } CompositeDisposable
AutoDispose
override fun onCreate(…) { … Flowable.interval(1, TimeUnit.SECONDS) .to(FlowableScoper<Long>(this)) .subscribe {
sec -> textView.text = "${sec}s" } } AutoDispose
enum class ActivityLifeCycle { CREATE, …, DESTROY } AutoDispose
public interface LifecycleScopeProvider<E> { Observable<E> lifecycle(); Function<E, E> correspondingEvents(); E
peekLifecycle(); } AutoDispose
abstract class RxActivity : AppCompatActivity(), LifecycleScopeProvider<ActivityLifeCycle> { … } AutoDispose
‣ lifecycle() ‣ returns an Observable of lifecycle events. ‣
This should be backed by a BehaviorSubject or something similar ‣ correspondingEvents() ‣ a mapping of events to corresponding ones. ‣ i.e. CREATE -> DESTROY ‣ peekLifecycle() ‣ returns the current lifecycle state of the object. AutoDispose
abstract class RxActivity : AppCompatActivity(), LifecycleScopeProvider<ActivityLifeCycle> { private val
lifecycle = BehaviorSubject.create<ActivityLifeCycle>() private lateinit var currentEvent: ActivityLifeCycle override fun lifecycle(): Observable<ActivityLifeCycle> = lifecycle override fun correspondingEvents(): Function<ActivityLifeCycle, ActivityLifeCycle> { return Function { lastEvent: ActivityLifeCycle -> when (lastEvent) { CREATE -> DESTROY else -> throw OutsideLifecycleException("Activity was destroyed") } } } override fun peekLifecycle() = currentEvent } AutoDispose
class MainActivity : RxActivity() { … override fun onCreate(…) {
Flowable.interval(1, TimeUnit.SECONDS) .to(FlowableScoper<Long>(this)) .subscribe { sec -> textView.text = "${sec}s" } } } AutoDispose
Thank you