Corotuine Observer

coroutine_observer.kt

class CoroutineObserver: LifecycleObserver, CoroutineScope {
    private lateinit var job: Job
    
    override val coroutineContext: CoroutineContext
        get() = job + Dispatchers.Default
    
    @OnLifecycleEvent(Lifecycle.Event.ON_CREATE)
    fun onCreate() {
        job = Job()
    }
    
    @OnLifecycleEvent(Lifecycle.Event.ON_DESTROY)
    fun onDestroy() {
        job.cancel()
    }
}

class TestActivity: AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        lifecycle.addObserver(CoroutineObserver())
    }
}