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# MPNowPlayingSessionDelegate

A protocol that defines the delegate interface for a Now Playing session.

```
protocol MPNowPlayingSessionDelegate : NSObjectProtocol
```

## Topics

### Responding to state changes

[`func nowPlayingSessionDidChangeActive(MPNowPlayingSession)`](/documentation/MediaPlayer/MPNowPlayingSessionDelegate/nowPlayingSessionDidChangeActive(_:))

Tells the delegate that the session changed its active status.

[`func nowPlayingSessionDidChangeCanBecomeActive(MPNowPlayingSession)`](/documentation/MediaPlayer/MPNowPlayingSessionDelegate/nowPlayingSessionDidChangeCanBecomeActive(_:))

Tells the delegate that the session is eligible to become active.

## Relationships

### Inherits From

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

---

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