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# compositionPickerViewDidStartAnimating(_:)

Performs custom tasks when the composition picker view starts animating a composition.

```
func compositionPickerViewDidStartAnimating(_ pickerView: QCCompositionPickerView!)
```

## Parameters

`pickerView`

The composition picker view in which the composition started animating.

## Discussion

Quartz Composer invokes  this method when  the composition picker view starts animating a composition. Implement this method if you want to perform custom tasks at that time.

---

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