Pdfium Android binding with Bitmap rendering

Use pdfium library from AOSP

The demo app (for not modified lib) is here

Forked specially for use with PdfViewPager project.

Changes in this fork:

• Added method for rendering PDF page on bitmap

  void renderPageBitmap(PdfDocument doc, Bitmap bitmap, int pageIndex,
                        int startX, int startY, int drawSizeX, int drawSizeY);

• Added methods to get width and height of page in points (1/72") (like in PdfRenderer.Page class):

  • int getPageWidthPoint(PdfDocument doc, int index);
  • int getPageHeightPoint(PdfDocument doc, int index);

• newDocument() throws IOException

API is fully compatible with original version, only additional methods were created.

What's new in 1.0.3'?

• probably fixed bug when pdf should open as normal but was throwing exception
• added much more descriptive exception messages

Installation

Add to build.gradle:

compile 'com.github.barteksc:pdfium-android:1.0.3'

Library is available in jcenter and Maven Central repositories.

Simple example

ImageView iv = (ImageView) findViewById(R.id.imageView);
FileDescriptor fd = ...;
int pageNum = 0;
PdfiumCore pdfiumCore = new PdfiumCore(context);
try {
    PdfDocument pdfDocument = pdfiumCore.newDocument(fd);

    pdfiumCore.openPage(pdfDocument, pageNum);

    int width = pdfiumCore.getPageWidthPoint(pdfDocument, pageNum);
    int height = pdfiumCore.getPageHeightPoint(pdfDocument, pageNum);

    Bitmap bitmap = Bitmap.createBitmap(width, height,
            Bitmap.Config.ARGB_8888);
    pdfiumCore.renderPageBitmap(pdfDocument, bitmap, pageNum, 0, 0,
            width, height);

    iv.setImageBitmap(bitmap);

    pdfiumCore.closeDocument(pdfDocument);
} catch(IOException ex) {
    ex.printStackTrace();
}

Build native part

Go to PROJECT_PATH/src/main/jni and run command $ ndk-build. This step may be executed only once, every future .aar build will use generated libs.