64.5 Adding the Suspend Function
When the user taps the button the app will need to launch the number of coroutines selected in the SeekBar. The launchCoroutines() onClick method will achieve this using the coroutine launch builder to execute a suspend function. Since the suspend function will return a status string to be displayed on the statusText TextView object, it will need to be implemented using the async builder. All of these actions will need to be performed within a coroutine scope which also needs to be declared. Within the MainActivity.kt file make the following changes:
.
.
import kotlinx.coroutines.*
.
.
class MainActivity : AppCompatActivity() {
private val coroutineScope = CoroutineScope(Dispatchers.Main)
.
.
suspend fun performTask(tasknumber: Int): Deferred<String> =
coroutineScope.async(Dispatchers.Main) {
...
