Handle UIKeyboard for form screens on iOS

keyboard.swift

    func keyboardShow(notification: NSNotification) {
        let info: NSDictionary = notification.userInfo!
        let frameV: NSValue = info[UIKeyboardFrameEndUserInfoKey] as! NSValue
        let frame: CGRect = frameV.CGRectValue()
        UIView.animateWithDuration(0.2, animations: {
            () in
            self.sview.contentInset = UIEdgeInsetsMake(0, 0, frame.size.height, 0)

        })
    }

    func keyboardHide(notification: NSNotification) {
        UIView.animateWithDuration(0.2, animations: {
            () in
            self.sview.contentInset = UIEdgeInsets(top: 64, left: 0, bottom: 0, right: 0)

        })
    }