PDF viewer events

Nutrient React Native SDK lets you listen to various events that occur when the end user interacts with Nutrient.

The following table lists the events supported by Nutrient React Native SDK on the main namespace:

Event	Description
`onCloseButtonPressed`	Called when the close button is pressed.
`onStateChanged`	Called when the `PSPDFKitView`’s state changed.
`onDocumentLoaded`	Called when the document has been successfully loaded.
`onDocumentSaved`	Called when the document has been successfully saved.
`onDocumentSaveFailed`	Called when the document failed to save.
`onDocumentLoadFailed`	Called when the document failed to load.
`onAnnotationTapped`	Called when the end user tapped on an annotation.
`onAnnotationsChanged`	Called when one or more annotations have changed.
`onNavigationButtonClicked`	Called when the navigation back button is pressed.
`onCustomAnnotationContextualMenuItemTapped`	Called when a custom contextual menu item button is pressed.
`onCustomToolbarButtonTapped`	Called when a custom toolbar button is pressed.

These events are superceded by the Nutrient React Native NotificationCenter.

Implementing an event listener

The example below shows how to implement an event listener to be notified when a document is saved:

<PSPDFKitView
	document={DOCUMENT}
	onDocumentSaved={(event) => {
		if (event['error']) {
			alert(event['error']);
		} else {
			alert('Document Saved!');
		}
	}}
	ref="pdfView"
	fragmentTag="PDF1"
	style={{ flex: 1 }}
/>

For more details and sample code, see the EventListeners.tsx example from the Catalog example project.