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Android / Guides
A documents entire set of annotations can be imported or exported using XFDF with the following guides. To import/export a partial set of annotations, please see annotation sync
To extract data from PDF to FDF, then export FDF as XFDF
PDFDoc doc = new PDFDoc(filename);
// Extract annotations to FDF.
// Optionally use e_both to extract both forms and annotations
FDFDoc doc_fields = doc.fdfExtract(PDFDoc.e_annots_only); //PDFDoc.e_forms_only
// Export annotations from FDF to XFDF.
doc_fields.saveAsXFDF(output_xfdf_filename);
// Optionally write XFDF to a string
String XFDF_string = doc_fields.saveAsXFDF();PDF Form Fill and Form Data Extraction
Full sample code which illustrates basic FDF merge/extract functionality and full support for FDF (Forms Data Format)
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