android:appCategory in Android O. Which values?

Question

Android O introduces the concept of app categories. These categories are used to cluster together apps of similar purpose or function. The developer declares this in the AndroidManifest.xml using android:appCategory according to the Android O Features and APIs documentation.

What the documentation isn't clear on is what values can this attribute be? I'm guessing it will be a discrete set of values rather than any string.

Answer 1

Upon installing Android Studio 2.4 (Preview 4) and amending the AndroidManifest.xml, the context revealed...

As this is a preview release of the environment, the above may not be finalised and correct. So we still need proper documentation as to how this attribute should be used.