Chapter 17. Data Persistence and Sharing

In this chapter, we will look at a couple of different ways to save data to an Android device's permanent storage. Also, for the first time, we will add a second Activity to our app. It often makes sense when implementing a separate "screen," such as a settings screen, in our app to do so in a new Activity. We could go to the trouble of hiding the original UI and then showing the new UI, but this would quickly lead to confusing and error-prone code. So, we will see how to add an Activity and navigate the user between them.

In summary, in this chapter, we will do the following:

  • Learn about Android Intents to switch Activity and pass data
  • Create a simple (very simple) settings screen in a new Activity
  • Persist ...

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