Don't use PRAcroForm, ever. Get the acroform through the catalog and
remember that the acroform may not exist.
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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