Setup Android Kotlin Coroutines (1.1) With Coroutine Scope
April 6, 2019NOTE: Why use Kotlin Coroutines?
Setup an Android Project with Kotlin.
Dependencies
Edit module:app build.gradles
.
dependencies {
// https://mvnrepository.com/artifact/org.jetbrains.kotlinx/kotlinx-coroutines-android
implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.1.1'
}
Coroutine Scope
CoroutineScope helps to ensure the Job is cancelled when container/scope is destroyed (e.g. the coroutines will cancel when activity is destroyed).
@ExperimentalCoroutinesApi
class GoogleDriveListActivity : AppCompatActivity(), CoroutineScope by MainScope() {
override fun onDestroy() {
super.onDestroy()
cancel()
}
override fun test() {
// launch in background thread
launch(Dispatchers.Default) {
}
// launch in main/ui thread
launch { // Dispatchers.Main
}
}
}
NOTE: If the job should outlived the parent container, use GlobalScope.launch.
NOTE: Refer Android Kotlin Coroutine Scope for Activity, Fragment and ViewModel (Architecture Components)
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