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Deep Dive in Work Manager @inyaki_mwc #mobconf18

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#mobconf18

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#mobconf18

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#mobconf18

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“ makes it easy to specify deferrable, asynchronous tasks and when they should run” #mobconf18

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This is a real story !!! #mobconf18

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< Android Ninja Warriors Rockstars Experts (116)

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Hi, I’m new Android Developer, have some questions < Android Ninja Warriors Rockstars Experts (116) 4:00 PM

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Welcome!! Sure, shoot Hi, I’m new Android Developer, have some questions < Android Ninja Warriors Rockstars Experts (116) 4:00 PM 4:00 PM

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Welcome!! Sure, shoot Hi, I’m new Android Developer, have some questions My app has to check in the server if I have new stock prices, I don’t know.. < Android Ninja Warriors Rockstars Experts (116) 4:01 PM 4:00 PM 4:00 PM

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Welcome!! Sure, shoot Hi, I’m new Android Developer, have some questions My app has to check in the server if I have new stock prices, I don’t know.. The first rule is don’t block the main thread < Android Ninja Warriors Rockstars Experts (116) 4:01 PM 4:02 PM 4:00 PM 4:00 PM

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Welcome!! Sure, shoot My app has to check in the server if I have new stock prices, I don’t know.. The first rule is don’t block the main thread < Android Ninja Warriors Rockstars Experts (116) 4:02 PM 4:00 PM 4:01 PM

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Welcome!! Sure, shoot My app has to check in the server if I have new stock prices, I don’t know.. The first rule is don’t block the main thread You can use a Thread < Android Ninja Warriors Rockstars Experts (116) 4:02 PM 4:00 PM 4:01 PM 4:03 PM

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My app has to check in the server if I have new stock prices, I don’t know.. The first rule is don’t block the main thread You can use a Thread < Android Ninja Warriors Rockstars Experts (116) 4:02 PM 4:01 PM 4:03 PM

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My app has to check in the server if I have new stock prices, I don’t know.. The first rule is don’t block the main thread You can use a Thread Whaaaat? Are you kidding me? Are you from the past? < Android Ninja Warriors Rockstars Experts (116) 4:02 PM 4:01 PM 4:03 PM 4:03 PM

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The first rule is don’t block the main thread You can use a Thread Whaaaat? Are you kidding me? Are you from the past? < Android Ninja Warriors Rockstars Experts (116) 4:02 PM 4:03 PM 4:03 PM

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The first rule is don’t block the main thread You can use a Thread Whaaaat? Are you kidding me? Are you from the past? You can use AsyncTask better than a Thread < Android Ninja Warriors Rockstars Experts (116) 4:02 PM 4:03 PM 4:03 PM 4:04 PM

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You can use a Thread Whaaaat? Are you kidding me? Are you from the past? You can use AsyncTask better than a Thread < Android Ninja Warriors Rockstars Experts (116) 4:03 PM 4:03 PM 4:04 PM

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You can use a Thread Whaaaat? Are you kidding me? Are you from the past? You can use AsyncTask better than a Thread 555555555 < Android Ninja Warriors Rockstars Experts (116) 4:03 PM 4:03 PM 4:04 PM 4:05 PM

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Whaaaat? Are you kidding me? Are you from the past? You can use AsyncTask better than a Thread 555555555 < Android Ninja Warriors Rockstars Experts (116) 4:03 PM 4:04 PM 4:05 PM GUYS, are you Android Developers? You know what is a service? 4:05 PM

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You can use AsyncTask better than a Thread 555555555 < Android Ninja Warriors Rockstars Experts (116) 4:04 PM 4:05 PM GUYS, are you Android Developers? You know what is a service? 4:05 PM

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You can use AsyncTask better than a Thread 555555555 < Android Ninja Warriors Rockstars Experts (116) 4:04 PM 4:05 PM GUYS, are you Android Developers? You know what is a service? 4:05 PM Service? 4:06 PM

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555555555 < Android Ninja Warriors Rockstars Experts (116) 4:05 PM GUYS, are you Android Developers? You know what is a service? 4:05 PM Service? 4:06 PM

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555555555 < Android Ninja Warriors Rockstars Experts (116) 4:05 PM GUYS, are you Android Developers? You know what is a service? 4:05 PM Service? 4:06 PM No, Intent Service 4:07 PM

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< Android Ninja Warriors Rockstars Experts (116) GUYS, are you Android Developers? You know what is a service? 4:05 PM Service? 4:06 PM No, Intent Service 4:07 PM

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< Android Ninja Warriors Rockstars Experts (116) GUYS, are you Android Developers? You know what is a service? 4:05 PM Service? 4:06 PM No, Intent Service 4:07 PM What? 4:07 PM

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< Android Ninja Warriors Rockstars Experts (116) Service? 4:06 PM No, Intent Service 4:07 PM What? 4:07 PM

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< Android Ninja Warriors Rockstars Experts (116) Service? 4:06 PM No, Intent Service 4:07 PM What? 4:07 PM I have more than 20 years of experience and always working with ThreadPoolExecutors 4:08 PM

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< Android Ninja Warriors Rockstars Experts (116) No, Intent Service 4:07 PM What? 4:07 PM I have more than 20 years of experience and always working with ThreadPoolExecutors 4:08 PM

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< Android Ninja Warriors Rockstars Experts (116) No, Intent Service 4:07 PM What? 4:07 PM I have more than 20 years of experience and always working with ThreadPoolExecutors 4:08 PM Do you think the poor guy is asking for ThreadPool executors 4:09 PM

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< Android Ninja Warriors Rockstars Experts (116) What? 4:07 PM I have more than 20 years of experience and always working with ThreadPoolExecutors 4:08 PM Do you think the poor guy is asking for ThreadPool executors 4:09 PM

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< Android Ninja Warriors Rockstars Experts (116) What? 4:07 PM I have more than 20 years of experience and always working with ThreadPoolExecutors 4:08 PM Do you think the poor guy is asking for ThreadPool executors 4:09 PM Google is providing JobSchedulers, more easy 4:10 PM

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< Android Ninja Warriors Rockstars Experts (116) I have more than 20 years of experience and always working with ThreadPoolExecutors 4:08 PM Do you think the poor guy is asking for ThreadPool executors 4:09 PM Google is providing JobSchedulers, more easy 4:10 PM

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< Android Ninja Warriors Rockstars Experts (116) I have more than 20 years of experience and always working with ThreadPoolExecutors 4:08 PM Do you think the poor guy is asking for ThreadPool executors 4:09 PM Google is providing JobSchedulers, more easy 4:10 PM JobSchedulers? 4:11 PM

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< Android Ninja Warriors Rockstars Experts (116) Do you think the poor guy is asking for ThreadPool executors 4:09 PM Google is providing JobSchedulers, more easy 4:10 PM JobSchedulers? 4:11 PM

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< Android Ninja Warriors Rockstars Experts (116) Do you think the poor guy is asking for ThreadPool executors 4:09 PM Google is providing JobSchedulers, more easy 4:10 PM JobSchedulers? 4:11 PM RX!!! 4:12 PM

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< Android Ninja Warriors Rockstars Experts (116) Google is providing JobSchedulers, more easy 4:10 PM JobSchedulers? 4:11 PM RX!!! 4:12 PM

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< Android Ninja Warriors Rockstars Experts (116) Google is providing JobSchedulers, more easy 4:10 PM JobSchedulers? 4:11 PM RX!!! 4:12 PM RX!!! 4:12 PM

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< Android Ninja Warriors Rockstars Experts (116) JobSchedulers? 4:11 PM RX!!! 4:12 PM RX!!! 4:12 PM

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< Android Ninja Warriors Rockstars Experts (116) JobSchedulers? 4:11 PM RX!!! 4:12 PM RX!!! 4:12 PM RX!!! 4:13 PM

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< Android Ninja Warriors Rockstars Experts (116) RX!!! 4:12 PM RX!!! 4:12 PM RX!!! 4:13 PM

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< Android Ninja Warriors Rockstars Experts (116) RX!!! 4:12 PM RX!!! 4:12 PM RX!!! 4:13 PM Rx? 4:13 PM

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< Android Ninja Warriors Rockstars Experts (116) RX!!! 4:12 PM RX!!! 4:13 PM Rx? 4:13 PM

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< Android Ninja Warriors Rockstars Experts (116) RX!!! 4:12 PM RX!!! 4:13 PM Rx? 4:13 PM Don’t worry, these kids likes lot of Rx Java but then they don’t know what is a Looper and Handler 4:14 PM

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< Android Ninja Warriors Rockstars Experts (116) RX!!! 4:13 PM Rx? 4:13 PM Don’t worry, these kids likes lot of Rx Java but then they don’t know what is a Looper and Handler 4:14 PM

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< Android Ninja Warriors Rockstars Experts (116) RX!!! 4:13 PM Rx? 4:13 PM Don’t worry, these kids likes lot of Rx Java but then they don’t know what is a Looper and Handler 4:14 PM Ohh yes, you can still use Windows 95 and Cobol with Thread pool Executors 4:15 PM

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< Android Ninja Warriors Rockstars Experts (116) Rx? 4:13 PM Don’t worry, these kids likes lot of Rx Java but then they don’t know what is a Looper and Handler 4:14 PM Ohh yes, you can still use Windows 95 and Cobol with Thread pool Executors 4:15 PM

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< Android Ninja Warriors Rockstars Experts (116) Rx? 4:13 PM Don’t worry, these kids likes lot of Rx Java but then they don’t know what is a Looper and Handler 4:14 PM Ohh yes, you can still use Windows 95 and Cobol with Thread pool Executors 4:15 PM 4:16 PM

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< Android Ninja Warriors Rockstars Experts (116) Don’t worry, these kids likes lot of Rx Java but then they don’t know what is a Looper and Handler 4:14 PM Ohh yes, you can still use Windows 95 and Cobol with Thread pool Executors 4:15 PM 4:16 PM

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< Android Ninja Warriors Rockstars Experts (116) Don’t worry, these kids likes lot of Rx Java but then they don’t know what is a Looper and Handler 4:14 PM Ohh yes, you can still use Windows 95 and Cobol with Thread pool Executors 4:15 PM 4:16 PM 4:17 PM

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< Android Ninja Warriors Rockstars Experts (116) Ohh yes, you can still use Windows 95 and Cobol with Thread pool Executors 4:15 PM 4:16 PM 4:17 PM

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< Android Ninja Warriors Rockstars Experts (116) Ohh yes, you can still use Windows 95 and Cobol with Thread pool Executors 4:15 PM 4:16 PM 4:17 PM Sorry but still I don’t know how to execute a Background task 4:18 PM

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< Android Ninja Warriors Rockstars Experts (116) 4:16 PM 4:17 PM Sorry but still I don’t know how to execute a Background task 4:18 PM

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< Android Ninja Warriors Rockstars Experts (116) 4:16 PM 4:17 PM Sorry but still I don’t know how to execute a Background task 4:18 PM WHY YOU DON’T SEARCH IN GOOGLE??? 4:19 PM

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< Android Ninja Warriors Rockstars Experts (116) 4:17 PM Sorry but still I don’t know how to execute a Background task 4:18 PM WHY YOU DON’T SEARCH IN GOOGLE??? 4:19 PM

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< Android Ninja Warriors Rockstars Experts (116) 4:17 PM Sorry but still I don’t know how to execute a Background task 4:18 PM WHY YOU DON’T SEARCH IN GOOGLE??? 4:19 PM But… 4:20 PM

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< Android Ninja Warriors Rockstars Experts (116) Sorry but still I don’t know how to execute a Background task 4:18 PM WHY YOU DON’T SEARCH IN GOOGLE??? 4:19 PM But… 4:20 PM

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< Android Ninja Warriors Rockstars Experts (116) Sorry but still I don’t know how to execute a Background task 4:18 PM WHY YOU DON’T SEARCH IN GOOGLE??? 4:19 PM But… 4:20 PM You have been forced to leave the group 4:21PM

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< Android Ninja Warriors Rockstars Experts (116) WHY YOU DON’T SEARCH IN GOOGLE??? 4:19 PM But… 4:20 PM You have been forced to leave the group 4:21PM

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< Android Ninja Warriors Rockstars Experts (116) WHY YOU DON’T SEARCH IN GOOGLE??? 4:19 PM But… 4:20 PM You have been forced to leave the group 4:21PM I’m late for the party? You can use coroutines

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Schedulers AsyncTask Handler ThreadPoolExecutor Services JobDispatchers Coroutines Threads #mobconf18

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Schedulers AsyncTask Handler ThreadPoolExecutor Services JobDispatchers Coroutines Threads ¯\_(ツ)_/¯ #mobconf18

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This is a real story (II) !!! #mobconf18

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#mobconf18

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#mobconf18

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#mobconf18

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Service #mobconf18

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Service #mobconf18

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Service #mobconf18

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Service #mobconf18

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Service #mobconf18

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Job Scheduler Service #mobconf18

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Job Scheduler Service #mobconf18

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Job Scheduler Service #mobconf18

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Job Scheduler Service #mobconf18

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Job Scheduler Service Firebase Job Dispatcher #mobconf18

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Job Scheduler Service Firebase Job Dispatcher #mobconf18

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Job Scheduler Service Firebase Job Dispatcher #mobconf18

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Job Scheduler Service Firebase Job Dispatcher #mobconf18 Doze Mode App Standby Background Restricted Apps Cached Wakelocks

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Job Scheduler Service Firebase Job Dispatcher #mobconf18 Doze Mode App Standby Background Restricted Apps Cached Wakelocks

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¯\_(ツ)_/¯ #mobconf18

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WorkManager #mobconf18

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WorkManager Guaranteed, constraint-aware execution Aware Background Restrictions Backwards Compatible Queryable Chainable Opportunistic #mobconf18

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Best Effort Guaranteed Execution Exact Timing Deferrable #mobconf18

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Best Effort Guaranteed Execution Exact Timing Deferrable Thread Pool Foreground Service Thread Pool JobScheduler JobDispatcher AlarmManager BroadcastReceivers #mobconf18

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Best Effort Guaranteed Execution Exact Timing Deferrable Thread Pool Foreground Service Thread Pool JobScheduler JobDispatcher AlarmManager BroadcastReceivers #mobconf18

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WORK #mobconf18

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WORK API >= 23 ? #mobconf18

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WORK API >= 23 ? JOBSCHEDULER Yes #mobconf18

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WORK API >= 23 ? JOBSCHEDULER EXECUTOR Yes #mobconf18

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WORK API >= 23 ? JOBSCHEDULER EXECUTOR Play Services? No Yes #mobconf18

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WORK API >= 23 ? JOBSCHEDULER EXECUTOR Play Services? FIREBASE JOBDISPATCHER No Yes Yes #mobconf18

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WORK API >= 23 ? JOBSCHEDULER EXECUTOR Play Services? FIREBASE JOBDISPATCHER ALARM MANAGER + BROADCAST No No Yes Yes #mobconf18

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WorkManager Api #mobconf18

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WorkManager Api implementation "android.arch.work:work-runtime:1.0.0-alpha07" implementation "android.arch.work:work-testing:1.0.0-alpha07" implementation "android.arch.work:work-runtime-ktx:1.0.0-alpha07" implementation "android.arch.work:work-firebase:1.0.0-alpha07" #mobconf18

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WorkManager Api implementation "android.arch.work:work-runtime:1.0.0-alpha07" #mobconf18

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WorkManager Api implementation "android.arch.work:work-runtime:1.0.0-alpha07" #mobconf18 import androidx.work.impl

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WorkManager Api #mobconf18

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WorkManager Api Worker WorkRequest WorkManager WorkStatus #mobconf18

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Worker #mobconf18

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Worker UUID Extras #mobconf18

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Worker doWork() SUCCESS FAILURE RETRY UUID Extras #mobconf18

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Worker doWork() SUCCESS FAILURE RETRY UUID Extras isCancelled / isStopped #mobconf18

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WorkRequest #mobconf18

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WorkRequest Constraints Backoff Criteria #mobconf18

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WorkRequest Constraints Network Device Idle Battery Storage Backoff Criteria #mobconf18

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WorkRequest Constraints Backoff Criteria OneTimeWorkRequest PeriodicWorkRequest #mobconf18

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WorkManager #mobconf18

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WorkManager enqueue cancel #mobconf18

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WorkManager enqueue cancel beginWith beginUniqueWork #mobconf18

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WorkStatus #mobconf18

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WorkStatus UUID State Data Tags #mobconf18

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WorkStatus UUID State Data Tags Blocked Cancelled Enqueued Failed Running Succeeded #mobconf18

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class ProcessData : Worker() { override fun doWork(): Result { myLongTaskProcess() return Result.SUCCESS } } #mobconf18

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class ProcessData : Worker() { override fun doWork(): Result { val result = myLongTaskProcess() val outputData = Data.Builder() .putInt(KEY, result) .build() setOutputData(outputData) return Result.SUCCESS } } #mobconf18

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class ProcessData : Worker() { override fun doWork(): Result { val result = myLongTaskProcess() val outputData = Data.Builder() .putInt(KEY, result) .build() setOutputData(outputData) return Result.SUCCESS } } Worker UUID Extras #mobconf18

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class ProcessData : Worker() { override fun doWork(): Result { myLongTaskProcess() return Result.SUCCESS } } #mobconf18

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class ProcessData : Worker() { override fun doWork(): Result { myLongTaskProcess() return Result.SUCCESS } } WorkRequest #mobconf18

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class ProcessData : Worker() { override fun doWork(): Result { myLongTaskProcess() return Result.SUCCESS } } OneTimeWorkRequest.Builder(ProcessData::class.java) WorkRequest #mobconf18

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class ProcessData : Worker() { override fun doWork(): Result { myLongTaskProcess() return Result.SUCCESS } } OneTimeWorkRequest.Builder(ProcessData::class.java) WorkRequest PeriodicWorkRequest.Builder(ProcessData::class.java, 15, TimeUnit.MINUTES) #mobconf18

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class ProcessData : Worker() { override fun doWork(): Result { myLongTaskProcess() return Result.SUCCESS } } OneTimeWorkRequest.Builder(ProcessData::class.java) .setConstraints(with(Constraints.Builder()) { setRequiredNetworkType(NetworkType.CONNECTED) setRequiresCharging(true) setRequiresDeviceIdle(true) build() }) #mobconf18

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OneTimeWorkRequest.Builder(ProcessData::class.java) .setConstraints(with(Constraints.Builder()) { setRequiredNetworkType(NetworkType.CONNECTED) setRequiresCharging(true) setRequiresDeviceIdle(true) build() }) #mobconf18

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OneTimeWorkRequest.Builder(ProcessData::class.java) .setConstraints(with(Constraints.Builder()) { setRequiredNetworkType(NetworkType.CONNECTED) setRequiresCharging(true) setRequiresDeviceIdle(true) build() }) WorkManager.getInstance().enqueue(process) #mobconf18

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WorkManager.getInstance().enqueue(process) WorkManager.getInstance() .getStatusById(process.id) .observe(this, Observer { if (it.state.isFinished) { } }) #mobconf18

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WorkManager.getInstance().enqueue(process) WorkManager.getInstance() .getStatusById(process.id) .observe(this, Observer { if (it.state.isFinished) { } }) #mobconf18

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.getStatusById(process.id) #mobconf18

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.getStatusById(process.id) @Override public @NonNull LiveData getStatusById(@NonNull UUID id) { } #mobconf18

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.getStatusById(process.id) @Override public @NonNull LiveData getStatusById(@NonNull UUID id) { } .observe(this, Observer {}) #mobconf18

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.getStatusById(process.id) @Override public @NonNull LiveData getStatusById(@NonNull UUID id) { } .observe(this, Observer {}) @MainThread public void observe(LifecycleOwner owner, @NonNull Observer observer) { } #mobconf18

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Process #mobconf18

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Process Process2 Process4 Process3 #mobconf18

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Process Process2 Process4 Process3 #mobconf18

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Process Process2 Process4 Process3 WorkManager.getInstance() .beginWith(process, process2) .then(process3) .then(process4) .enqueue() #mobconf18

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Process2 Process4 Process5 Process1 Process3 #mobconf18

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Process2 Process4 Process5 Process1 Process3 val chain1 = WorkManager.getInstance() .beginWith(process1) .then(process2) val chain2 = WorkManager.getInstance() .beginWith(process3) .then(process4) val chain3 = WorkContinuation .combine(chain1, chain2) .then(process5) chain3.enqueue() #mobconf18

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Task Executor #mobconf18

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Task Executor postToMainThread executeOnBackgroundThread #mobconf18

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Task Executor postToMainThread executeOnBackgroundThread Handler(Looper.getMainLooper()) Executors.newSingleThreadExecutor #mobconf18

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Task Executor postToMainThread executeOnBackgroundThread DefaultTaskExecutor Handler(Looper.getMainLooper()) Executors.newSingleThreadExecutor WorkManagerTaskExecutor #mobconf18

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#mobconf18 Testing?

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#mobconf18 Testing? private static void setupSynchronousTaskExecutor() { WorkManagerTaskExecutor.getInstance() .setTaskExecutor(new TaskExecutor() { @Override public void postToMainThread(Runnable runnable) { runnable.run(); } @Override public void executeOnBackgroundThread(Runnable runnable) { runnable.run(); } }); }

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#mobconf18 WorkMangerTestInitHelper

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#mobconf18 WorkMangerTestInitHelper TestWorkManagerImpl TestDriver

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TestScheduler #mobconf18 WorkMangerTestInitHelper TestWorkManagerImpl TestDriver SynchrnousExecutor

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WorkDatabase #mobconf18

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WorkDatabase Room Architecture Components #mobconf18

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WorkDatabase WorkSpec Room Architecture Components Dependency SystemIdInfo WorkName WorkTag #mobconf18

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Upload media to a server Parse data and store it in database OK #mobconf18

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Upload media to a server Parse data and store it in database Parse data and update contents of a view Process payment transaction Use as data store OK NOT OK #mobconf18

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https://codelabs.developers.google.com/codelabs/android-workmanager/#0 Links & References

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https://codelabs.developers.google.com/codelabs/android-workmanager/#0 Links & References

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https://codelabs.developers.google.com/codelabs/android-workmanager/#0 Links & References

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inaki.seri@gmail.com @inyaki_mwc Thanks!!!