Chapter 5: Using Kotlin Flows

In the previous three chapters, we dove into Kotlin coroutines and learned how we can use them for asynchronous programming in Android. We learned about coroutine builders, scopes, dispatchers, contexts, and jobs. We then learned how to handle coroutine cancelations, timeouts, and exceptions. We also learned how to create tests for coroutines in your code.

In the next three chapters, we will focus on Kotlin Flow, a new asynchronous stream library built on top of Kotlin coroutines. A flow can emit multiple values over a length of time instead of just a single value. You can use Flows for streams of data, such as real-time location, sensor readings, and live database values.

In this chapter, we will explore Kotlin Flows. We will start by building Kotlin Flows. Then, we will look into the various operators you can use for transforming, combining, buffering, and doing more with Flows. Finally, we will learn about StateFlows and SharedFlows.

This...