Intercepting Touch Events Passed to PSPDFKit

PSPDFKit consumes touch events on displayed documents while providing simple callbacks for the most interesting events. Refer to the 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 wrapping PdfFragment inside a custom ViewGroup. You can then observe all touch events and intercept them before they’re handled in PdfFragment by implementing ViewGroup#onInterceptTouchEvent(). You can read more about this mechanism in the Manage touch events in a ViewGroup guide.