Intercepting touch events passed to PSPDFKit

PSPDFKit consumes touch events on displayed documents while providing simple callbacks for the most interesting events. See Document Listeners guide for a full list of exposed events.

If you need to observe all touch events, for example to detect multitouch, we recommend you to wrap the PdfFragment inside a custom ViewGroup. You can then observe all touch events and intercept them before being handled in PdfFragment by implementing ViewGroup#onInterceptTouchEvent(). You can read more about this mechanism in Manage touch events in a ViewGroup guide.