WorkManager and LiveData

WorkManagerExample.kt

// by id
WorkManager.getInstance(context).getWorkInfoByIdLiveData(syncOnlyOnce.id)
.observe(this, Observer { workInfo ->
   if (workInfo != null && 
workInfo.state == State.SUCCEEDED) {
       displayMessage("Sync finished!")
   }
})


//by tag
WorkManager.getInstance(context)
.getWorkInfosByTagLiveData(Constants.TAG_SYNC)
   .observe(this,
       Observer<List<WorkStatus>> { workStatusList ->
           val currentWorkStatus = workStatusList ?.getOrNull(0)
           if (currentWorkStatus ?.state ?.isFinished == true) {
               displayMessage("Sync finished!")
           }
       })

//by unique name
WorkManager.getInstance(context)
.getWorkInfosForUniqueWorkLiveData(Constants.UNIQUE_NAME)
   .observe(this,
       Observer<List<WorkStatus>> { workStatusList ->
           val currentWorkStatus = workStatusList ?.getOrNull(0)
       if (currentWorkStatus ?.state ?.isFinished == true) {
           displayMessage("Sync finished!")
       }
       })