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.
- merge pull request by usef with added support for rendering annotations. Due to limitations of Pdfium, messages from comments cannot be read and are rendered only as speech balloons.
Add to build.gradle:
compile 'com.github.barteksc:pdfium-android:1.4.0'
Library is available in jcenter and Maven Central repositories.
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 + "-");
}
}
}
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.