Kotlin Coroutines: Fundamentals

Feb 14 2024 · Kotlin 1.9, Android 13, Android Studio Giraffe

Part 2: Deep Dive into Coroutines

05. Understand Coroutine Context & Dispatchers

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Previous episode: 04. Challenge: Implement a Coroutine Calling Suspend Function Next episode: 06. Use Coroutine Builders: launch, async, runBlocking

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In this episode you’ll learn about the coroutine context and dispatchers.

CoroutineScope(dispatcher).launch {
    
}

CoroutineScope(dispatcher).launch {
    repeat(100) { index ->
        launch {

        }
    }
}

CoroutineScope(dispatcher).launch {
  repeat(100) { index ->
      launch {
          Log.d("Running coroutine #$index", Thread.currentThread().name)
          delay(10.milliseconds)
      }
  }
}

CoroutineScope(Dispatchers.IO).launch {
  repeat(100) { index ->
    Log.d("Launching coroutine #$index", Thread.currentThread().name)
    launch {
      delay(10.milliseconds)
      withContext(Dispatchers.Main) {
        Log.d("Running coroutine #$index", Thread.currentThread().name)
      }
    }
  }
}