Summary

At the end of this chapter, you should be able to understand concurrency in Android and all the different mechanisms to work with it. You should know that there is a main thread where the UI is updated and that we can create background threads to perform other tasks. You must also know the difference between having the app perform a task in the background (in other words, not on the screen) and having the app perform tasks in a background thread. You should also know the importance of software design patterns and be able to implement some of them.

In the next chapter, we will take a look at how to work with list views, we will implement an adapter, and we will discover a new pattern, ViewHolder, which will be the key to understanding the difference between ListView and RecyclerView introduced in Android Lollipop.