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.
- Add method
PdfiumCore#newDocument(byte[])
for reading PDF documents from memory - Cleanup AndroidManifest.xml to solve problems with manifest merger
Add to build.gradle:
compile 'com.github.barteksc:pdfium-android:1.5.0'
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.