Android Implement LifecycleOwner for WorkManager
May 13, 2019WorkManager runs in background thread, while LifecycleOwner/LiveData require main/ui thread, thus it is highly not recommended.
If you really must …
The sample below utilize CoroutineWorker
class ReminderWorker(appContext: Context, workerParams: WorkerParameters): CoroutineWorker(appContext, workerParams), LifecycleOwner {
companion object {
fun run() : LiveData<WorkInfo> {
val work = OneTimeWorkRequestBuilder<ReminderWorker>().build()
WorkManager.getInstance().enqueue(work)
return WorkManager.getInstance().getWorkInfoByIdLiveData(work.id)
}
}
private lateinit var lifecycleRegistry: LifecycleRegistry
override fun getLifecycle(): Lifecycle {
return lifecycleRegistry
}
override suspend fun doWork(): Result = coroutineScope {
val worker = this@ReminderWorker
lifecycleRegistry = LifecycleRegistry(worker)
lifecycleRegistry.currentState = Lifecycle.State.CREATED
val lifecyclerOwner = work
// test if Lifecycle.Event.ON_DESTROY is called
lifecycle.addObserver(object : LifecycleObserver {
@OnLifecycleEvent(Lifecycle.Event.ON_DESTROY)
fun onDestroy() {
Timber.d("onDestroy")
}
})
lifecycleRegistry.currentState = Lifecycle.State.STARTED
// do something
lifecycleRegistry.currentState = Lifecycle.State.DESTROYED
Result.success()
}
}
References:
- algo-trading
- algolia
- analytics
- android
- android-ktx
- android-permission
- android-studio
- apps-script
- bash
- binance
- bootstrap
- bootstrapvue
- chartjs
- chrome
- cloud-functions
- coding-interview
- contentresolver
- coroutines
- crashlytics
- crypto
- css
- dagger2
- datastore
- datetime
- docker
- eslint
- firebase
- firebase-auth
- firebase-hosting
- firestore
- firestore-security-rules
- flask
- fontawesome
- fresco
- git
- github
- glide
- godot
- google-app-engine
- google-cloud-storage
- google-colab
- google-drive
- google-maps
- google-places
- google-play
- google-sheets
- gradle
- html
- hugo
- inkscape
- java
- java-time
- javascript
- jetpack-compose
- jetson-nano
- kotlin
- kotlin-serialization
- layout
- lets-encrypt
- lifecycle
- linux
- logging
- lubuntu
- markdown
- mate
- material-design
- matplotlib
- md5
- mongodb
- moshi
- mplfinance
- mysql
- navigation
- nginx
- nodejs
- npm
- nuxtjs
- nvm
- pandas
- payment
- pip
- pwa
- pyenv
- python
- recylerview
- regex
- room
- rxjava
- scoped-storage
- selenium
- social-media
- ssh
- ssl
- static-site-generator
- static-website-hosting
- sublime-text
- ubuntu
- unit-test
- uwsgi
- viewmodel
- viewpager2
- virtualbox
- vue-chartjs
- vue-cli
- vue-router
- vuejs
- vuelidate
- vuepress
- web-development
- web-hosting
- webpack
- windows
- workmanager
- wsl
- yarn