> Don't use PRAcroForm, ever. Get the acroform through the catalog
Now i am confused:
After your suggestion i would have fetched the acroform through the
catalog like this:
PdfObject form = this.reader.getCatalog().get(PdfName.ACROFORM);
But if i look into the code of the method 'getAcroForm' i read:
PdfObject form = catalog.get(PdfName.ACROFORM);
So where's the difference?
Afterwards i would have constructed the AcroForm Object (propably) like
you did
to be able to change the 'SigFlags' flag. Or is there another way to do
that?
> and remember that the acroform may not exist.
Do you mean it does not exist for PDF's without form fields?
Or is there the possibility if you have a formfields-PDF and there is no
Acroform?
Thanks,
ToM
> Paulo
>
> ----- Original Message -----
> From: "Tobias Meier" <[EMAIL PROTECTED]>
> To: "Post all your questions about iText here"
> <itext-questions@lists.sourceforge.net>
> Sent: Monday, April 07, 2008 7:23 PM
> Subject: Re: [iText-questions] Reuse Stamper?
>
>
> >I debbuged through the code and it seems that the
> > 'removeField' method removes the Field itself from the PDF but the
> > reference is not removed from the field array (/Fields and then
> > /Kids[..]).
> > Thus when i read the file again i get an PDF.Null Object and the ids
> > of
> > the (removed) fields are still in the FIELDS Array but does not have
> > an
> > actual match...
> >
> > Could this be a bug or am i doing something wrong?
> > Thanks
> > ToM
> >
> >> Hi,
> >>
> >> i want to remove all (unsigned) signatures from an PDF.
> >> That itself works fine but afterwards if i access the AcroForm
> >> Object
> >> i
> >> always get null / Nullpointer Exception.
> >> If i do Step 2. before Step 1. all works fine.
> >> What is the reason for that? (Because i changed the AcroFields in
> >> advance?).
> >>
> >> //1. Remove some fields (signature fields)
> >> AcroFields acroFields = this.stamper.getAcroFields();
> >> ArrayList al = acroFields.getBlankSignatureNames();
> >>
> >> for (int i = 0; i < al.size(); i++) {
> >> acroFields.removeField((String)al.get(i));
> >> }
> >>
> >> //2. Then fetch the AcroForm but a Nullpointer occurs
> >> PRAcroForm form = this.reader.getAcroForm();
> >> form.put(PdfName.SIGFLAGS,new PdfNumber(0));
> >>
> >>
> >> So if i want to remove the signatures and then set the 'SigFlags'
> >> how
> >> can this be done?
> >> And a general question: The reader can not be reused but the
> >> stamper
> >> can?
> >>
> >> Regards,
> >> ToM
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