[Android] PDFNet annotations compatibility

[Mysochenko_Yuriy]

Hello,

I have to store annotations separately in xfdf file, after a user complete editing, the user can export pdf document with annotations, so I have to merge them:

File document = new File(mDocumentPath);
File annotations = new File(mAnnotationsPath);
if (annotations.exists()) {
    try {
        PDFDoc doc = new PDFDoc(new FileInputStream(document));
        FDFDoc fdf = FDFDoc.createFromXFDF(mAnnotationsPath);
        doc.fdfMerge(fdf);
        doc.flattenAnnotations(true);
        doc.save(mResultFilePath, SDFDoc.e_linearized, null);
        doc.close();
        fdf.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

The issue is: some 3rd party pdf viewers cannot display the annotations in the pdf file.

App name	Supported	Play Store
Google PDF Viewer	-	https://play.google.com/store/apps/details?id=com.google.android.apps.pdfviewer
Google Drive Pdf Viewer	-	https://play.google.com/store/apps/details?id=com.google.android.apps.docs
Adobe Reader	-	https://play.google.com/store/apps/details?id=com.adobe.reader
Foxit Reader	+	https://play.google.com/store/apps/details?id=com.foxit.mobile.pdf.lite
EBookDroid	+	https://play.google.com/store/apps/details?id=org.ebookdroid
PDF Reader	-	https://play.google.com/store/apps/details?id=pdf.reader
PDF Reader	+	https://play.google.com/store/apps/details?id=com.foobnix.pdf.reader

I changed the ‘flatten’ flag to false:

        doc.flattenAnnotations(false);

and it works, all these viewers display annotations (highlight, strikeout, underline, custom drawing) correctly.

But, unfortunately, the ‘note’ annotations aren’t working.
I see only a icon in the pdf file, but can’t read or edit the note (see attached file).

Could you help me? Perhaps, I’m doing something wrong.

Thanks.

[Ryan]

Calling RefreshApperance will resolve this issue.

Annot.refreshAppearance();

See the following for more, including code to parse all annotations.

https://groups.google.com/d/msg/pdfnet-sdk/OhtqIGvBYx0/YTOOi9eDsNAJ
https://www.pdftron.com/pdfnet/samplecode/AnnotationTest.java.html