The latest update to Adobe Acrobat and Adobe Reader DC does now finally support a data picker. The way this works is that you create a normal date field - meaning a text field with a date format applied - and when such a field is displayed in the latest version of Acrobat/Reader, a date picker is shown. See here for more information: http://khkonsulting.com/2017/01/new-form-field-types-in-acrobat-dc-image-field-and-date-picker/
This means all you need to do is mimic what a date field created in Acrobat looks like. You would do that by creating one, and then analyzing what the field format and validation options look like (e.g. using the PDFBox Debugger). If you need a sample, you can download one from here: http://khkonsulting.com/files/AUC/date_image_field.pdf There are other date pickers, which are implemented as JavaScript in the PDF form. If you want to implement something like that, you would have to get such a date picker, apply it to a document, and then again reverse engineer how this information is stored inside the field object. Karl Heinz Kremer PDF Acrobatics Without a Net PDF Software Development, Training and More... [email protected] http://www.khkonsulting.com
