Pdfium Android binding with Bitmap rendering

Use pdfium library from AOSP

The demo app (for not modified lib) is here

Forked for use with AndroidPdfViewer project.

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

What's new in 1.5.0?

• Add method PdfiumCore#newDocument(byte[]) for reading PDF documents from memory
• Cleanup AndroidManifest.xml to solve problems with manifest merger

Installation

Add to build.gradle:

compile 'com.github.barteksc:pdfium-android:1.5.0'

Library is available in jcenter and Maven Central repositories.

Simple example

void openPdf() {
    ImageView iv = (ImageView) findViewById(R.id.imageView);
    ParcelFileDescriptor 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);

        printInfo(pdfiumCore, pdfDocument);

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

public void printInfo(PdfiumCore core, PdfDocument doc) {
    PdfDocument.Meta meta = core.getDocumentMeta(doc);
    Log.e(TAG, "title = " + meta.getTitle());
    Log.e(TAG, "author = " + meta.getAuthor());
    Log.e(TAG, "subject = " + meta.getSubject());
    Log.e(TAG, "keywords = " + meta.getKeywords());
    Log.e(TAG, "creator = " + meta.getCreator());
    Log.e(TAG, "producer = " + meta.getProducer());
    Log.e(TAG, "creationDate = " + meta.getCreationDate());
    Log.e(TAG, "modDate = " + meta.getModDate());

    printBookmarksTree(core.getTableOfContents(doc), "-");

}

public void printBookmarksTree(List<PdfDocument.Bookmark> tree, String sep) {
    for (PdfDocument.Bookmark b : tree) {

        Log.e(TAG, String.format("%s %s, p %d", sep, b.getTitle(), b.getPageIdx()));

        if (b.hasChildren()) {
            printBookmarksTree(b.getChildren(), sep + "-");
        }
    }
}

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.