How to prevent the popup from being dismissed when user taps outside ?

[zahurafzal007]

I have a view controller that is presented as popup using the BizPopupViewController class. Now, everything works fine but i want to prevent that view controller from being dismissed when user taps outside the view controller. It should dismiss by code which i have done, but i dont know how to prevent that PopupViewController from being dimissed when user taps outside.