Support for PDF within Android application

I currently have Android application that can not open PDF files inside application and rely on Third party app on USER device to open PDF. I need someone to build me a library to that can open pdf fast within my existing app that I'm building. Requirement: (1) Must be able to open PDF using Activity and Fragments in Android. (2) Should load PDF Fast and Efficient way on device. (3) USER must be able to navigate pdf pages using simple Vertical Scroll. (4) When PDF open There should not be any other controller on the screen. (5) PDF should be appear and Scale it self to cover the screen. I should be able to import this library in my existing project and Should be able to call APIS like: (A) In case I want pdf's appear as a Activity: Intent intent = new Intent(this, [login to view URL]); [login to view URL](PdfViewerActivity.EXTRA_PDFFILENAME, "PATH TO PDF GOES HERE"); startActivity(intent); (B) In case if PDF should be load under Android tab-bar View and there for it should load as Fragment than: PDFFragment fragment = (ExampleFragment) getFragmentManager().findFragmentById(R.id.pdf_fragment); [login to view URL]("PATH TO PDF GOES HERE"); should load pdf within fragments. Please Note: (a) You can pick any pdf rendering engine of your choice. (b) I should be able to use final product inside my existing project. (c) If you have noticed how PDF looks on iOS than you have clear idea on what I'm looking for. (d) you can also get an idea on how this library should behave with USER if you download Adobe PDF reader on your android device and try reading PDF on it. Thanks.