Android Concurrency and Coroutines Questions

Concurrency and asynchronous programming patterns on Android, covering traditional thread and handler models, legacy constructs such as AsyncTask, reactive approaches such as RxJava, and modern Kotlin coroutine based techniques. Topics include suspend functions, CoroutineScope and Dispatchers, structured concurrency, cancellation, exception handling, flows for streams of asynchronous data, integration with Android lifecycle components, thread safety and synchronization on Android, and best practices for coordinating background work and updating the user interface on the main thread.