Android

Can i add Custom Button on PDFTron Webview in android. how to write onclick of custom button in android using pdfTron

Hi, if you are asking about WebViewer there is a separate forum for that.
https://groups.google.com/forum/#!forum/pdfnet-webviewer

To answer your question, please take a look at the “Customization: UI Controls” sample.
https://www.pdftron.com/webviewer/demo/samples.html

Take a look at the config.js file for onclick event handling.