Unresolved reference: launch
Launch isn't used anymore directly. The Kotlin documentation suggests using:
fun main() {
GlobalScope.launch { // launch a new coroutine in background and continue
delay(1000L)
println("World!")
}
println("Hello,") // main thread continues here immediately
runBlocking { // but this expression blocks the main thread
delay(2000L) // ... while we delay for 2 seconds to keep JVM alive
}
}
If you are using Coroutines 1.0+, the import is no longer
import kotlinx.coroutines.experimental.*
but
import kotlinx.coroutines.launch
You would need the following in the dependencies closure of your build.gradle (for Coroutines 1.0.1):
implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.0.1'
implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.0.1"