Section:

Export annotations on iOS

To extract data from PDF to FDF, then export FDF as XFDF

1PTPDFDoc *doc = [[PTPDFDoc alloc] initWithFilepath: filename];
2
3// Extract annotations to FDF.
4// Optionally use e_ptboth to extract both forms and annotations
5PTFDFDoc *doc_fields = [doc FDFExtract: e_ptannots_only]; //e_ptforms_only
6
7// Export annotations from FDF to XFDF.
8[doc_fields SaveAsXFDF: output_xfdf_filename];
9
10// Optionally write XFDF to a string
11NSString *XFDF_string = [doc_fields SaveAsXFDFToString];

Disable annotation auto-save

Document changes by default will automatically save to the PDF. Set PTDocumentController's automaticallySavesDocument to false to disable auto-save.

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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