Scroll complete view above keypad

i am creating an ios app, i have designed a view which have some controls on it like text fields, buttons and image etc.

When i clicks in text field keypad appears. now what i want is scroll complete view above keypad top when keypad get opened.

By default it is scrolling upto text field in which i have clicked, but i have buttons below the text boxes they are not visible.

Can anyone suggest how can i do this ?