Dismissing the keyboard in a UIScrollView

Here is the cleanest way to achieve this in iOS 7.0 and above.

scrollView.keyboardDismissMode = UIScrollViewKeyboardDismissModeOnDrag;

Or

scrollView.keyboardDismissMode = UIScrollViewKeyboardDismissModeInteractive;

In Swift:

scrollView.keyboardDismissMode = .onDrag

Or

scrollView.keyboardDismissMode = .interactive