Added in [API level 33](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

# Spatializer.OnHeadTrackerAvailableListener

*** ** * ** ***


`
public
static


interface
Spatializer.OnHeadTrackerAvailableListener
`


`


`

|---|
| android.media.Spatializer.OnHeadTrackerAvailableListener |

<br />

*** ** * ** ***

Interface to be notified of changes to the availability of a head tracker on the audio
device to be used by the spatializer effect.

## Summary

| ### Public methods ||
|---|---|
| ` abstract void` | ` https://developer.android.com/reference/android/media/Spatializer.OnHeadTrackerAvailableListener#onHeadTrackerAvailableChanged(android.media.Spatializer,%20boolean)(https://developer.android.com/reference/android/media/Spatializer spatializer, boolean available) ` Called when the availability of the head tracker changed. |

## Public methods

### onHeadTrackerAvailableChanged

Added in [API level 33](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public abstract void onHeadTrackerAvailableChanged (Spatializer spatializer, 
                boolean available)
```

Called when the availability of the head tracker changed.

<br />

| Parameters ||
|---|---|
| `spatializer` | `Spatializer`: the `Spatializer` instance for which the head tracker availability was updated. This value cannot be `null`. <br /> |
| `available` | `boolean`: true if the audio device that would output audio processed by the `Spatializer` has a head tracker associated with it, false otherwise. <br /> |