IssueTracker

* Which Android Beta build are you using? See Settings > About phone > Build number (for example PPP5.180610.010).
   
Not applicable.

    * Is this a regression from P to Q?

Not applicable.

    * What device are you using? (for example, Pixel XL)

Not applicable.

    * What are the steps to reproduce the problem? (Please provide the minimal reproducible test case.)

Visit https://developer.android.com/preview/features/roles#satisfy-role-requirements

    * Issue Category e.g. Framework (platform), NDK (platform), Hardware (CPU, GPU, Sensor, Camera), ART (platform), Runtime Permissions etc

Documentation

    * What was the expected result?

For that section to cover all seven roles.

    * Can you provide the API document where this expected behavior is explained?

https://developer.android.com/preview/features/roles#platform-defined lists six roles, and the RoleManager JavaDocs list seven roles.

    * What was the actual result?

Visit https://developer.android.com/preview/features/roles#satisfy-role-requirements covers just ROLE_MUSIC. Some of the other roles can be guessed -- for example, ROLE_GALLERY requires that the MAIN/LAUNCHER activity <intent-filter> have the DEFAULT and APP_GALLERY categories. However, the other roles are not nearly so obvious, and it is unclear how to become eligible for them.