Kotlin Coroutines: An Intro to Practical Use on Android
summary
Coroutines claim to replace callbacks and RxJava for Android by giving sequential-looking async code while actually supporting suspend functions, launch/async/deferred builders and withContext thread switches. Examples show cancellation via Job and cooperative cancellation (delay vs Thread.sleep), parallelism with async/await, dispatchers (commonPool defaults to cpu count) and Retrofit deferred adapters. Unit tests use runBlocking to run suspending code. Several production uses report success and the talk demonstrates concrete code patterns, gotchas, and testing strategies.
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chapters (16)
- 0:00Intro
- 1:34Outline
- 4:55Take an example... with callbacks
- 7:21What is a coroutine?
- 11:42What are Kotlin Coroutines?
- 17:47Coroutine Builders - async
- 20:21Coroutine Builders - runBlocking
- 21:53Using Thread Pools
- 24:23A note about threading...
- 28:18Switching Threads in a Coroutine
- 28:41Cancelling Coroutines
- 33:04Error Handling
- 34:09Testing
- 36:46Tips for starting in an existing app
- 38:30A Note on "Experimental" Status
- 41:12Any Questions?
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