A Simple, lightweight, PDF viewer for android

by androidexample

Pdfy

Simple, lightweight, PDF viewer for android. Supports assets paths, or internet URLs.

What does it do?

It will load a PDF and show it in a custom view, it can be scrolled vertically and zoomed in or out.

How can you open a PDF?

For now it only supports PDFs from assets or from a URL (using okhttp to download)

How does it work?

  • using PDFRenderer API from android
  • download the pdf file and store it in local cache as PDF, and load pages while they are viewed
  • show a recyclerview with all those images
  • let the images zoom in and out using Zoomage

How to use the library

Add it in your root build.gradle at the end of repositories:

allprojects {
    repositories {
        ...
        maven { url 'https://jitpack.io' }
    }
}

Add the dependency

dependencies {
    implementation 'com.github.boldijar:pdfy:<latest-version>'
}

Let the library know how to load the images. I didn’t wanted to include this in the library because people might want to use their own caching library, you can chech the demo to see how to do this with Glide.

class GlideLoader : PdfyImageLoader() {
    override fun loadImage(path: String, imageView: ImageView) {
        Glide.with(imageView).load(path).into(imageView)
    }
}

And set the loader before you use the library:

PdfyParser.init(GlideLoader())

Now load a PDF:

pdfyView.setPdf(
    path = "http://www.ignaciouriarte.com/works/18/pdfs/A100page47.pdf",
    type = PdfyType.FROM_INTERNET,
    uniqueCacheName = "<somePdfId>" // optional, used for caching, default is a random UUID
)

GitHub

View Github