How to start coroutines to run indefinitely and stop during onPause of activity life cycle

Question

I am new to using co routines .... I am trying something like this

Start a thread(using co routines) on resume() of activity
Run the thread indifinately
Set textview every 5 seconds
Stop onPause() of activity life cycle

visit https://www.youtube.com/watch?v=UsHTxOILP5g .very helpful — IntelliJ Amiya, Mar 27 '20 at 14:37

score 3 · Accepted Answer · answered Mar 27 '20 at 15:21

3

You can do this

private var job: Job? = null

override fun onStart() {
    super.onStart()
    job = lifecycleScope.launch {
        while (true) {
            /* do work */
            delay(5000L)
        }
    }
}

override fun onStop() {
    job?.cancel()
    job = null
    super.onStop()
}

answered Mar 27 '20 at 15:21

Francesc

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`lifecycleScope` comes from the [androidx.lifecycle:lifecycle-runtime-ktx:2.2.0+](https://developer.android.com/topic/libraries/architecture/coroutines) dependency. A nice addition so you don't have to manage your own scope. Thanks for that! Though in this case the job is cancelled anyway before the scope would but still – RobCo Mar 27 '20 at 15:40

How to start coroutines to run indefinitely and stop during onPause of activity life cycle

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