But to use ExtendedDualLayout i need to Override PDFSetView.
What is the best way to mantain unthached the libray?
To Override the method I need that some var are declared protected and not private
You can create a class that extends PDFLayoutView and overrides PDFSetView
For the private variables, you can override the methods that set these variables to save an instance of their values, or you can use your own values based on the variables and your requirements.