Adding a settings page to Note to Self
Now that we are armed with all this knowledge about the Android Intent class, we can add another screen (Activity) to our Note to Self app. We will add a settings screen.
We will first create a new Activity for our settings 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 Java code to switch from MainActivity to the new one. We will, however, defer wiring up our settings screen with Java until we have learned how to save the settings to disk. We will do this later in this chapter and then come back to the settings screen to make its data persist.
First, let's create that new Activity class. We will call it SettingsActivity.
Creating SettingsActivity
This 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 comprehensive settings screen but it will...