WorkManager Stableに向けての所感

2019/3/18に開催されたOtemachi.apk #2の発表資料です。当日はFirebaseJobDispatcher周りについて事実とは異なる発言をしているので修正したものになります。

Transcript

1. WorkManager Stable
   Yoshihiro Wada a.k.a. @e10dokup
   Otemachi.apk #2 - 2019/03/18
   2019/3/20
   

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2. Yoshihiro Wada a.k.a. @e10dokup
   CyberAgant Inc. / Ameba
   Ameba
   

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3. WorkManager
   

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4. Android Jetpack
   compileSdkVersion 28
   API Play Services JobScheduler/AlermManager/FirebaseJobDispatcher
   FirebaseJobDispatcher 1.0.0-alpha12
   FirebaseJobDispatcher deprecated
   etc
   WorkManager
   

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5. FirebaseJobDispatcher
   

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7. WorkManager Stable 1.0.0
   Released
   

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8. Beta RC Stable
   bug x
   Breaking API Changes 2018/12/12 1.0.0-alpha13
   Codelabs API Changes
   

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9. WorkManager
   

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10. Worker
    WorkManager
    WorkRequest
    Worker Request WorkManager
    Request WorkManager
    WorkManager
    WorkRequest
    WorkManager
    

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11. Worker
    doWork()
    WorkManager
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    ˖ EP8PSL
    ⰻד䗳銲זⳢ椚׾鎸鶢ׅ׷
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    GBJMVSF
    ׾鵤ׅ
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    class MyWorker(
    context: Context, params: WorkerParameters
    ) : Worker(context, params) {
    override fun doWork(): Worker.Result {
    // Կ͔͠Βͷॲཧ
    return Worker.Result.success()
    }
    }
    

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12. WorkRequest optional Worker
    OneTimeWorkRequest - WorkRequest
    PeriodicWorkRequest - WorkRequest
    WorkManager
    ˖ 8PSLFSח㹋遤ח䗳銲ז⦼׾♷ִ׷
    ˖ %BUBؙٓأ׾CVJME׃׋׮ך׾TFU*OQVU%BUBדTFUׅ׷
    ˖ 8PSLFS⩎דכHFU*OQVU%BUBד《׶⳿ׅ
    8PSL3FRVFTU
    // 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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13. WorkManager WorkRequest enqueue
    WorkManager
    // Workerに値を与える
    val data = Data.Builder().putString(“KEY”, “VALUE”).build()
    OneTimeWorkRequest.Builder(MyWorker::class.java)
    .setInputData(data)
    .build()
    // Workerで値を取り出す
    getInputData().getString(“KEY”)
    ˖ 8PSL.BOBHFSFORVFVFׅ׷׌ֽ
    欰䧭׃׋8PSL3FRVFTUך㹋遤
    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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14. potatotips
    8PSL.BOBHFS
    :PTIJIJSP8BEBBLB!FEPLVQ
    BU1PUBUPUJQT
    ְתׁ׵
    https://bit.ly/2UF3k4Q
    

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15. WorkManager
    Executor Constraints
    

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16. DB Worker
    GreedyScheduler ThreadPool
    JobSchedulers
    createBestAvailableBackgroundScheduler
    API Level 23 JobSchedulers
    Google Play Services FirebaseJobDispatcher
    AlermManager + BroadCastReceiver
    Executor
    ref: https://speakerdeck.com/takahirom/workmanager （58P）
    

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17. DB Worker
    GreedyScheduler ThreadPool
    JobSchedulers
    createBestAvailableBackgroundScheduler
    API Level 23 JobSchedulers
    AlermManager + BroadCastReceiver
    Executor
    ref: https://speakerdeck.com/takahirom/workmanager （58P）
    

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18. Constraints
    WorkRequest
    Constraints
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    8PSLך㹋遤朐䡾׾ⵖꣲ׃׋ְ
    // ୺຤͕ॆిதͰ͋Δ੍໿ΛՃ͑Δ
    val constraints = Constraints.Builder()
    .setRequiresCharging(true)
    .build()
    continuation = continuation.then(
    OneTimeWorkRequest.Builder(AWorker::class.java)
    .setConstraints(constraints)
    .build()
    )
    

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19. WorkManager Constraints
    NetworkType -
    BatterNotLow -
    Charging -
    StorageNotLow -
    DeviceIdle - Doze Idle API23
    Constraints
    

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20. WorkManager Constraints
    NetworkType -
    BatterNotLow -
    Charging -
    StorageNotLow -
    DeviceIdle - Doze Idle API23
    Constraints
    ConstraintController Tracker Constraints
    

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21. WorkManager Constraints
    NetworkType -
    BatterNotLow -
    Charging -
    StorageNotLow -
    DeviceIdle - Doze Idle API23
    Constraints
    ConstraintController Tracker Constraints
    

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22. Constrains Builder Charging
    Constraints WorkManager
    TaskExecuter Worker WorkerFactory
    Tracker ConstraintController
    Charging Constraint
    public @NonNull Builder setRequiresCharging(boolean requiresCharging) {
    this.mRequiresCharging = requiresCharging;
    return this;
    }
    

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23. BatteryChargingController
    Room DB Charging Constraint
    BatteryChargingTracker
    ACTION_BATTERY_CHANGED intent ACTION_CHARGING /
    ACTION_POWER_CONNECTED
    Tracker Constraint Back-o
    Worker
    Charging Constraint
    

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24. https://android.googlesource.com/platform/frameworks/support/+/androidx-
    master-dev/work/workmanager/src/main/java/androidx/work/impl/constraints
    BatteryNotLow 15% ACTION_BATTERY_OKAY/LOW
    NetworkType ConnectivityManager METERED CONNECTED
    ROAMING
    StorageNotLow ACTION_DEVICE_STORAGE_OK / LOW
    API 26 AndroidManifest BroadcastReceiver deprecated
    BroadcastReceiver
    Constraints
    

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25. Executor Constraints
    Firebase JobDispatcher WorkManager migrating
    https://developer.android.com/topic/libraries/architecture/workmanager/
    migrating-fb
    

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