how to interact to a webform in bacground

[yimcooldude]

I am developing an application, in which I need to enter details to a webform and click on submit button after entering those details. But all this is to be done on backend. Means, the webform should not be able to see the webform. he should be able to see the text fields and form widgets, that i have put on the layout of the activity. the entered details should go to the webform in the background.
I don't know how to do this, or even this is possible or not. please help..