Move the screen up when keyboard appears depending of the textView. Swift
<p>I've tried to move the screen up when keyboard appears. I did it with success but I need to know how to scroll the view only when de bottom <code>UITextView</code> is clicked, and not with the top <code>TextView</code> because keyboard just touches the <code>TextView</code> below.</p>

<p>App is this:</p>

<p><a href="http://i.stack.imgur.com/JuPyX.png" rel="nofollow">Our view</a></p>

<pre><code>class viewControllerCuatro: UIViewController, UITextViewDelegate {

 @IBOutlet weak var textViewInteriorUno: UITextView!
@IBOutlet weak var textViewInteriorDos: UITextView!

override func viewDidLoad() {


self.navigationItem.backBarButtonItem = UIBarButtonItem(title: "Atrás", style: UIBarButtonItemStyle.Plain, target: nil, action: nil)


**NSNotificationCenter.defaultCenter().addObserver(self, selector: Selector("keyboardWillShow:"), name:UIKeyboardWillShowNotification, object: self.view.window)
NSNotificationCenter.defaultCenter().addObserver(self, selector: Selector("keyboardWillHide:"), name:UIKeyboardWillHideNotification, object: self.view.window)**




}


 **func keyboardWillShow(sender: NSNotification) {**



// 1
let userInfo: [NSObject : AnyObject] = sender.userInfo!
// 2
let keyboardSize: CGSize = userInfo[UIKeyboardFrameBeginUserInfoKey]!.CGRectValue.size
let offset: CGSize = userInfo[UIKeyboardFrameEndUserInfoKey]!.CGRectValue.size
// 3
if keyboardSize.height == offset.height {
    UIView.animateWithDuration(0.1, animations: { () -&gt; Void in
        self.view.frame.origin.y -= keyboardSize.height
    })
} else {
    UIView.animateWithDuration(0.1, animations: { () -&gt; Void in
        self.view.frame.origin.y += keyboardSize.height - offset.height
    })
    }


}

**func keyboardWillHide(sender: NSNotification)** {
let userInfo: [NSObject : AnyObject] = sender.userInfo!
let keyboardSize: CGSize = userInfo[UIKeyboardFrameBeginUserInfoKey]!.CGRectValue.size
self.view.frame.origin.y += keyboardSize.height
}

**override func viewWillDisappear(animated: Bool)** {
NSNotificationCenter.defaultCenter().removeObserver(self, name: UIKeyboardWillShowNotification, object: self.view.window)
NSNotificationCenter.defaultCenter().removeObserver(self, name: UIKeyboardWillHideNotification, object: self.view.window)
}


  override func touchesBegan(touches: Set&lt;UITouch&gt;, withEvent event: UIEvent?) {

if textViewInteriorUno.text == ""  || textViewInteriorUno.text.isEmpty == true || textViewInteriorDos.text == "" || textViewInteriorDos.text.isEmpty == true {


    textViewInteriorUno.resignFirstResponder()


    textViewInteriorDos.resignFirstResponder()
}
else{

    self.textViewInteriorUno.resignFirstResponder()

    self.textViewInteriorDos.resignFirstResponder()
}
}

   func textView(textView: UITextView, shouldChangeTextInRange range: NSRange, replacementText text: String) -&gt; Bool{

var shouldReplace = true // For most cases, return true, only modify if we have a special case

// If the textView is 'textViewInteriorUno'
if textView.isEqual(textViewInteriorUno) {

let newLength = textViewInteriorUno.text.utf16.count + text.utf16.count - range.length
shouldReplace = newLength &lt;= 12           // will be true if the length is &lt;= 12

}

else if textView.isEqual(textViewInteriorDos) {

let newLength = textViewInteriorDos.text.utf16.count + text.utf16.count - range.length
shouldReplace = newLength &lt; 13 // Will be true if the length &gt; 6


}

return shouldReplace
}
</code></pre>