MuPDF for Android (easy to use Android PDF Viewer)
no vote
MUPDF is a lightweight PDF reader, if you simply double click the MuPDF application icon, window interface does not appear, simply select the file to open. And also a Android/iOS version, version Android NDK is required to compile the source code before it runs, I've managed to compile this version, the source code can be run directly. Do PDF development knows that, currently, better PDF Viewer Basic is implemented based on mupdf for secondary packaging, so it was a worthwhile learning and practical source.