Document Media Session playback flags

[jonathanpeppers]

Summary

• Document MediaController.Extras, local and remote playback types, and the public media-session handling flags.
• Leave generated interop members and unscoped placeholders untouched.

Refs #137

Sources

• https://android.googlesource.com/platform/frameworks/base/+/refs/heads/main/media/java/android/media/session/MediaController.java
• https://android.googlesource.com/platform/frameworks/base/+/refs/heads/main/media/java/android/media/session/MediaSession.java

Validation

• Parsed all changed XML files with PowerShell's XML parser.
• Confirmed CRLF line endings and git diff --check.
• Reduced Android.Media.Session placeholders from 273 to 268.

[Copilot]

Pull request overview

This PR improves the generated XML documentation for Android.Media.Session by replacing a few remaining “To be added.” placeholders with meaningful summaries/values, focusing on media session playback flags, playback types, and MediaController.Extras.

Changes:

• Documented MediaSessionFlags members for media button handling and transport controls.
• Documented MediaPlaybackType values for local vs. remote playback.
• Replaced the placeholder <value> text for MediaController.Extras.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
docs/xml/Android.Media.Session/MediaSessionFlags.xml	Replaces placeholder summaries for public media-session handling flags.
docs/xml/Android.Media.Session/MediaPlaybackType.xml	Replaces placeholder summaries for local/remote playback type values.
docs/xml/Android.Media.Session/MediaController.xml	Replaces placeholder value text for MediaController.Extras.

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[jonathanpeppers]

@dalexsoto review

[dalexsoto]

Two media-session blockers remain:

• PlaybackInfo.PlaybackType is mapped to Android.Media.MediaPlaybackType (0/1) although Android returns session playback values 1/2; local values appear as remote and remote values are unnamed. Please correct the binding to Android.Media.Session.MediaPlaybackType and regenerate.
• Both MediaSessionFlags members are deprecated no-ops since API 26, but their summaries describe active behavior and enum-field remarks are not published. Put the no-op/deprecation guidance directly in the summaries or generate matching obsolescence metadata.

[jonathanpeppers]

Addressed both blockers in bbb40d0:

• Corrected PlaybackInfo.PlaybackType across the generated C#, ILAsm, F#, and return-type metadata to use Android.Media.Session.MediaPlaybackType (Local = 1, Remote = 2).
• Updated both MediaSessionFlags summaries to state directly that the flags are no-ops on API 26 and later.

Validated XML parsing, generated-page type/signature compatibility, CRLF line endings, and git diff --check.

[dalexsoto]

PlaybackInfo.PlaybackType is documented as Android.Media.Session.MediaPlaybackType, but the shipping managed reference assembly still exposes Android.Media.MediaPlaybackType. The new published signature therefore would not compile for consumers. Please correct the binding upstream and regenerate this file, or retain the actual managed signature until that binding change ships.

[jonathanpeppers]

Resolved the new compatibility concern in 361dde7. MediaController.PlaybackInfo.PlaybackType now retains the generated Android.Media.MediaPlaybackType signature from the shipping managed reference assembly; the upstream binding correction is not being simulated in this docs-only PR. Revalidated XML parsing, generated-page compatibility with the shipping signature, CRLF, and git diff --check.

[dalexsoto]

The docs now preserve the shipping managed playback-type signature while accurately documenting values, nullable extras, and API 26 flag behavior.