Yes, you can do it implementing it yourself..sorry we do not have an example code for this
You need to pay attention that, while navigating with the view pager you need to release resources or you will face lots of memory problems (for example closing the pdfs that is not visible)
The solution we recommend in your case, using a premium license, you will be able to create one pdf instead of all your one page pdfs...this will save memory resources, the navigation will be much smoother...etc
You can test this solution using the demo project (as it is activated with premium license), you can check PDFTestAct.concat_pdf( String dst, String src )