Move the screen up when keyboard appears depending of the textView. Swift

Question

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 UITextView is clicked, and not with the top TextView because keyboard just touches the TextView below.

App is this:

Our view

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: { () -> Void in
        self.view.frame.origin.y -= keyboardSize.height
    })
} else {
    UIView.animateWithDuration(0.1, animations: { () -> 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<UITouch>, 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) -> 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 <= 12           // will be true if the length is <= 12

}

else if textView.isEqual(textViewInteriorDos) {

let newLength = textViewInteriorDos.text.utf16.count + text.utf16.count - range.length
shouldReplace = newLength < 13 // Will be true if the length > 6


}

return shouldReplace
}

Answer 1

IQKeyboardManager was a godsend for me!

Step 1:

All you have to do is download the project from https://github.com/hackiftekhar/IQKeyboardManager and move the IQKeyboardManagerSwift directory from the demo project to your project.

Make sure the IQKeyboardManagerSwift directory is the right location in your project once you move it.

Step 2:

Then In AppDelegate.swift, just enable IQKeyboardManager in your application function.

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

var window: UIWindow?

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool 
  {

  // This is the only line of code you need to manually add
  // in order for IQKeybaordManager to work. Thats it.
  IQKeyboardManager.sharedManager().enable = true

  return true
  }
}

That's it! Now your keyboard will slide up and move the view accordingly. Props to the creator of this framework, makes our lives a lot easier.