It would be nice if there is a way to register to formula field events (onFocus, OnLongpress) and to insert programmatically some predefined text in the active formula field which has the focus.
The user is selecting a formula text field in the PDFviewer and the app receives an event for it (e.g. longpress or focus event). Now I would like to open a custom DatePicker so the user can select a date in a calendar Control. If the user has selected a date, I would like to insert this date into the active formula field which has the focus.