Move a view up only when the keyboard covers an input field

Your problem is well explained in this document by Apple. Example code on this page (at Listing 4-1) does exactly what you need, it will scroll your view only when the current editing should be under the keyboard. You only need to put your needed controls in a scrollViiew.The only problem is that this is Objective-C and I think you need it in Swift..so..here it is:

Declare a variable

var activeField: UITextField?

then add these methods

 func registerForKeyboardNotifications(){    //Adding notifies on keyboard appearing    NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyboardWasShown:", name: UIKeyboardWillShowNotification, object: nil)    NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyboardWillBeHidden:", name: UIKeyboardWillHideNotification, object: nil)}func deregisterFromKeyboardNotifications(){    //Removing notifies on keyboard appearing    NSNotificationCenter.defaultCenter().removeObserver(self, name: UIKeyboardWillShowNotification, object: nil)    NSNotificationCenter.defaultCenter().removeObserver(self, name: UIKeyboardWillHideNotification, object: nil)}func keyboardWasShown(notification: NSNotification){    //Need to calculate keyboard exact size due to Apple suggestions    self.scrollView.scrollEnabled = true    var info : NSDictionary = notification.userInfo!    var keyboardSize = (info[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.CGRectValue().size    var contentInsets : UIEdgeInsets = UIEdgeInsetsMake(0.0, 0.0, keyboardSize!.height, 0.0)    self.scrollView.contentInset = contentInsets    self.scrollView.scrollIndicatorInsets = contentInsets    var aRect : CGRect = self.view.frame    aRect.size.height -= keyboardSize!.height    if let activeFieldPresent = activeField    {        if (!CGRectContainsPoint(aRect, activeField!.frame.origin))        {            self.scrollView.scrollRectToVisible(activeField!.frame, animated: true)        }    }}func keyboardWillBeHidden(notification: NSNotification){    //Once keyboard disappears, restore original positions    var info : NSDictionary = notification.userInfo!    var keyboardSize = (info[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.CGRectValue().size    var contentInsets : UIEdgeInsets = UIEdgeInsetsMake(0.0, 0.0, -keyboardSize!.height, 0.0)    self.scrollView.contentInset = contentInsets    self.scrollView.scrollIndicatorInsets = contentInsets    self.view.endEditing(true)    self.scrollView.scrollEnabled = false}func textFieldDidBeginEditing(textField: UITextField!){    activeField = textField}func textFieldDidEndEditing(textField: UITextField!){    activeField = nil}

Be sure to declare your ViewController as UITextFieldDelegate and set correct delegates in your initialization methods:ex:

self.you_text_field.delegate = self

And remember to call registerForKeyboardNotifications on viewInit and deregisterFromKeyboardNotifications on exit.

Edit/Update: Swift 4.2 Syntax

func registerForKeyboardNotifications(){    //Adding notifies on keyboard appearing    NotificationCenter.default.addObserver(self, selector: #selector(keyboardWasShown(notification:)), name: NSNotification.Name.UIResponder.keyboardWillShowNotification, object: nil)    NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillBeHidden(notification:)), name: NSNotification.Name.UIResponder.keyboardWillHideNotification, object: nil)}func deregisterFromKeyboardNotifications(){    //Removing notifies on keyboard appearing    NotificationCenter.default.removeObserver(self, name: NSNotification.Name.UIResponder.keyboardWillShowNotification, object: nil)    NotificationCenter.default.removeObserver(self, name: NSNotification.Name.UIResponder.keyboardWillHideNotification, object: nil)}@objc func keyboardWasShown(notification: NSNotification){    //Need to calculate keyboard exact size due to Apple suggestions    self.scrollView.isScrollEnabled = true    var info = notification.userInfo!    let keyboardSize = (info[UIResponder.keyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue.size    let contentInsets : UIEdgeInsets = UIEdgeInsets(top: 0.0, left: 0.0, bottom: keyboardSize!.height, right: 0.0)    self.scrollView.contentInset = contentInsets    self.scrollView.scrollIndicatorInsets = contentInsets    var aRect : CGRect = self.view.frame    aRect.size.height -= keyboardSize!.height    if let activeField = self.activeField {        if (!aRect.contains(activeField.frame.origin)){            self.scrollView.scrollRectToVisible(activeField.frame, animated: true)        }    }}@objc func keyboardWillBeHidden(notification: NSNotification){    //Once keyboard disappears, restore original positions    var info = notification.userInfo!    let keyboardSize = (info[UIResponder.keyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue.size    let contentInsets : UIEdgeInsets = UIEdgeInsets(top: 0.0, left: 0.0, bottom: -keyboardSize!.height, right: 0.0)    self.scrollView.contentInset = contentInsets    self.scrollView.scrollIndicatorInsets = contentInsets    self.view.endEditing(true)    self.scrollView.isScrollEnabled = false}func textFieldDidBeginEditing(_ textField: UITextField){    activeField = textField}func textFieldDidEndEditing(_ textField: UITextField){    activeField = nil}

Here is My 2 cents:

Have you tried: https://github.com/hackiftekhar/IQKeyboardManager

Extremely easy to install Swift or Objective-C.

Here how it works:

IQKeyboardManager (Swift):- IQKeyboardManagerSwift is available through CocoaPods, to install it simply add the following line to your Podfile: (#236)

pod 'IQKeyboardManagerSwift'

In AppDelegate.swift, just import IQKeyboardManagerSwift framework and enable IQKeyboardManager.

import IQKeyboardManagerSwift@UIApplicationMainclass AppDelegate: UIResponder, UIApplicationDelegate {    var window: UIWindow?    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {    IQKeyboardManager.sharedManager().enable = true    // For Swift 4, use this instead    // IQKeyboardManager.shared.enable = true    return true    }}

And that is all. Easy!

The one I found to work perfectly for me was this:

func textFieldDidBeginEditing(textField: UITextField) {    if textField == email || textField == password {        animateViewMoving(true, moveValue: 100)    }}func textFieldDidEndEditing(textField: UITextField) {    if textField == email || textField == password {        animateViewMoving(false, moveValue: 100)    }}func animateViewMoving (up:Bool, moveValue :CGFloat){    let movementDuration:NSTimeInterval = 0.3    let movement:CGFloat = ( up ? -moveValue : moveValue)    UIView.beginAnimations("animateView", context: nil)    UIView.setAnimationBeginsFromCurrentState(true)    UIView.setAnimationDuration(movementDuration)    self.view.frame = CGRectOffset(self.view.frame, 0, movement)    UIView.commitAnimations()}

You can also change the height values. Remove the "if statement" if you want to use it for all text fields.

You can even use this for all controls that require user input like TextView.