Hello,
In the PDFTron viewer it is possible to follow internal (and external) hyperlinks. The feature we are seeking is to have an option to go back to the original page where the user clicked on the internal hyperlink.
Is this feature available in the SDK, or should this be written by the developers themselves? If so, are there any specific functions we should have a look at?
Kind regards,
Yorick
Android:
If you are integrating with PDFTron SDK via:
https://www.pdftron.com/documentation/android/guides/getting-started/using-activity
or
https://www.pdftron.com/documentation/android/guides/getting-started/using-fragment
This is done for you in the latest PDFTron Android 6.8 SDK.
See:
https://imgur.com/a/HSNUwrV
If you would like to do this yourself, it is possible:
onInterceptAnnotationHandling: https://www.pdftron.com/documentation/android/guides/basics/tools/intercept-annotation-handling
When annotation type is Annot.e_Link, save a boolean member varialbe i.e. linkClicked as well as current page, i.e. savedPageNum
Then show a back button of your choice. Upon clicking, simply check:
if (linkClicked) { mPdfViewCtrl.setCurrentPage(savedPageNum); }
iOS:
Similar to instruction of how you can add it on Android, you can add it on iOS:
-toolManager:shouldHandleLinkAnnotation:orLinkInfo:onPageNumber:: https://www.pdftron.com/documentation/ios/guides/tools/customization#customize-via-the-api
When annotation type is link, save a boolean member varialbe i.e. linkClicked as well as current page, i.e. savedPageNum
Then show a back button of your choice. Upon clicking, simply check:
if (linkClicked) { [mPdfViewCtrl SetCurrentPage: savedPageNum]; }