いまさらWorkManager

2019/1/28に開催されたPotatotips #58にて発表した資料です

Transcript

1. WorkManager
   Yoshihiro Wada a.k.a. @e10dokup
   2019/1/28 at Potatotips #58
   

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2. a.k.a. e10dokup
   CyberAgent Inc.
   Ameba
   

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4. 2018/12/23 - 1.0.0-beta01
   2019/1/15 1.0.0-beta02
   2018/12/12 - 1.0.0-alpha13
   Breaking Change
   Codelabs
   WorkManager
   

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5. Android Jetpack
   compileSdkVersion 28
   API Play Services JobScheduler/AlermManager/
   FirebaseJobDispatcher
   etc
   WorkManager
   

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6. Worker
   WorkManager
   WorkRequest
   Worker Request WorkManager
   Request WorkManager
   WorkManager
   WorkRequest
   

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7. extends Worker
   doWork()
   Worker.Result.success() / failure()
   Worker
   class MyWorker(
   context: Context, params: WorkerParameters
   ) : Worker(context, params) {
   override fun doWork(): Worker.Result {
   // Կ͔͠Βͷॲཧ
   return Worker.Result.success()
   }
   }
   

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8. Worker
   Data build setInputData set
   Worker getInputData
   WorkRequest
   // Workerʹ஋Λ༩͑Δ
   val data = Data.Builder().putString("KEY", "VALUE").build()
   OneTimeWorkRequest.Builder(MyWorker::class.java)
   .setInputData(data)
   .build()
   // WorkerͰ஋ΛऔΓग़͢
   getInputData().getString("KEY")
   

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9. OneTimeWorkRequest
   Worker Request
   PeriodicWorkRequest
   Worker Request
   WorkRequest
   

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10. WorkManager#enqueue
    WorkRequest
    workManager = WorkManager.getInstance()
    val data = Data.Builder().putString("KEY", "VALUE").build()
    val request = OneTimeWorkRequest.Builder(MyWorker::class.java)
    .setInputData(data)
    .build()
    workManager.enqueue(request)
    

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11. WorkManager#beginWith Continuation then Work
    Continuation#enqueue
    Work
    // AWorker -> BWorker -> CWorkerͷॱʹ࣮ߦ͞Ε͍ͯ͘WorkContinuation
    val continuation =
    workManager.beginWith(OneTimeWorkRequest.from(AWorker::class.java))
    continuation.then(OneTimeWorkRequest.from(BWorker::class.java))
    continuation.then(OneTimeWorkRequest.from(CWorker::class.java))
    continuation.enqueue()
    

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12. WorkManager#beginUniqueWork
    ExistingWorkPolicy
    REPLACE -
    KEEP -
    APPEND -
    Work -
    var continuation = workManager.beginUniqueWork(
    "unique_work_id",
    ExistingWorkPolicy.REPLACE,
    OneTimeWorkRequest.from(AWorker::class.java)
    )
    

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13. WorkRequest Constraint
    Work
    // ୺຤͕ॆిதͰ͋Δ੍໿ΛՃ͑Δ
    val constraints = Constraints.Builder()
    .setRequiresCharging(true)
    .build()
    continuation = continuation.then(
    OneTimeWorkRequest.Builder(AWorker::class.java)
    .setConstraints(constraints)
    .build()
    )
    

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14. NetWorkType -
    BatteryNotLow -
    Charging -
    StorageNotLow -
    DeviceIdle - API23 Doze Idle
    Work
    

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15. WorkRequest tag set WorkStatus
    uniqueId Continuation
    LiveData
    RxJava2 -> RxWorker 1.0.0-alpha12
    Codelabs
    2-3
    

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