Adding a settings page to Note to self

Now we are armed with all this knowledge about the Android Intent class, we can add another screen (Activity) to our Note to self app: a "Settings" screen.

We will first create a new Activity instance for our new screen and see what effect that has on the AndroidManifest.xml file. We will then create a very simple layout for our settings screen and add the Kotlin code to switch from MainActivity to the new one. We will, however, defer wiring up our settings screen layout with Kotlin until we have learned how to save the users preferred settings to disk. We will do this later on in this chapter and then come back to the settings screen to make its data persist.

First, let's code that new Activity class. We will call it SettingsActivity.

Creating the SettingsActivity

SettingsActivity will be a screen where the user can turn on or off the decorative divider between each note in the RecyclerView widget. This will not be a very comprehensive...