I need convert image to PDF document, I have 15 SDK (If I had 19 SDK I use PdfDocument). I find good library for my task, it's iText. I add its lib to my project:
compile 'com.itextpdf:itext-pdfa:5.5.8'
But then I find some information about license and now I can't understand if I can use this library in my project or not? And if not please tell me what the free library to convert PDF.