On
Listener for receiving page changes caused by the user touching or dragging the PdfThumbnailBar.
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Functions
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abstract fun onPageChanged(controller: PdfThumbnailBarController, @IntRange(from = 0
Called whenever the user touched or dragged across the thumbnail bar, selecting a different page. The thumbnail bar won't update its internal state (i.e. the currently shown emphasized/highlighted page) after calling this method, but will wait for a subsequent call to the document listener's onPageChanged before updating.