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

Question

I am trying to build an input screen for the iPhone  The screen has a number of input fields  Most of them on the top of the screen  but two fields are at the bottom   When the user tries to edit the text on the bottom of the screen  the keyboard will pop up and it will cover the screen   I found a simple solution to move the screen up when this happens  but the result is that the screen always moves up and the fields on top of the screen move out of reach when the user tries to edit those    Is there a way to have the screen only move when the bottom fields are edited   I have used this code I found here    override func viewDidLoad         super viewDidLoad               NSNotificationCenter defaultCenter   addObserver self  selector  Selector  keyboardWillShow     name  UIKeyboardWillShowNotification  object  nil      NSNotificationCenter defaultCenter   addObserver self  selector  Selector  keyboardWillHide     name  UIKeyboardWillHideNotification  object  nil     func keyboardWillShow sender  NSNotification        self view frame origin y -  150    func keyboardWillHide sender  NSNotification        self view frame origin y    150

User · Answer

Here s my version after reading the documentation provided by Apple and the previous posts  One thing I noticed is that the textView was not handled when covered by the keyboard  Unfortunately  Apple s documentation won t work because  for whatever reason  the keyboard is called AFTER the textViewDidBeginEditing is called  I handled this by calling a central method that checks if the keyboard is displayed AND if a textView or textField is being edited  This way  the process is only fired when BOTH conditions exists   Another point with textViews is that their height may be such that the keyboard clips the bottom of the textView and would not adjust if the Top-Left point of the was in view  So  the code I wrote actually takes the screen-referenced Bottom-Left point of any textView or textField and sees if it falls in the screen-referenced coordinates of the presented keyboard implying that the keyboard covers some portion of it   let aRect   CGRect   scrollView convertRect activeFieldRect   toView  nil      if  CGRectContainsPoint keyboardRect   CGPointMake aRect origin x  aRect maxY                 scroll textView textField into view         If you re using a navigation controller  the subclass also sets the scroll view automatic adjustment for insets to false   self automaticallyAdjustsScrollViewInsets   false   It walks through each textView and textField to set delegates for handling      for view in self view subviews           if view is UITextView               let tv   view as  UITextView             tv delegate   self           else if view is UITextField               let tf   view as  UITextField             tf delegate   self                   Simply set your base class to the subclass created here for results   import UIKit  class ScrollingFormViewController  UIViewController  UITextViewDelegate  UITextFieldDelegate    var activeFieldRect  CGRect  var keyboardRect  CGRect  var scrollView  UIScrollView   override func viewDidLoad          self automaticallyAdjustsScrollViewInsets   false      super viewDidLoad           Do any additional setup after loading the view      self registerForKeyboardNotifications       for view in self view subviews           if view is UITextView               let tv   view as  UITextView             tv delegate   self           else if view is UITextField               let tf   view as  UITextField             tf delegate   self                     scrollView   UIScrollView frame  self view frame      scrollView scrollEnabled   false     scrollView showsVerticalScrollIndicator   false     scrollView showsHorizontalScrollIndicator   false     scrollView addSubview self view      self view   scrollView    override func viewDidLayoutSubviews         scrollView sizeToFit       scrollView contentSize   scrollView frame size     super viewDidLayoutSubviews      deinit       self deregisterFromKeyboardNotifications      override func didReceiveMemoryWarning         super didReceiveMemoryWarning          Dispose of any resources that can be recreated      func registerForKeyboardNotifications           Adding notifies on keyboard appearing     NSNotificationCenter defaultCenter   addObserver self  selector   selector ScrollingFormViewController keyboardWasShown   name  UIKeyboardWillShowNotification  object  nil      NSNotificationCenter defaultCenter   addObserver self  selector   selector ScrollingFormViewController 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        let info   NSDictionary   notification userInfo      keyboardRect    info UIKeyboardFrameEndUserInfoKey  as  NSValue   CGRectValue       adjustForKeyboard       func keyboardWillBeHidden notification  NSNotification        keyboardRect   nil     adjustForKeyboard      func adjustForKeyboard         if keyboardRect    nil  amp  amp  activeFieldRect    nil           let aRect   CGRect   scrollView convertRect activeFieldRect   toView  nil          if  CGRectContainsPoint keyboardRect   CGPointMake aRect origin x  aRect maxY                          scrollView scrollEnabled   true             let contentInsets   UIEdgeInsets   UIEdgeInsetsMake 0 0  0 0  keyboardRect  size height  0 0              scrollView contentInset   contentInsets             scrollView scrollIndicatorInsets   contentInsets             scrollView scrollRectToVisible activeFieldRect   animated  true                  else           let contentInsets   UIEdgeInsets   UIEdgeInsetsZero         scrollView contentInset   contentInsets         scrollView scrollIndicatorInsets   contentInsets         scrollView scrollEnabled   false          func textViewDidBeginEditing textView  UITextView        activeFieldRect   textView frame     adjustForKeyboard      func textViewDidEndEditing textView  UITextView        activeFieldRect   nil     adjustForKeyboard      func textFieldDidBeginEditing textField  UITextField        activeFieldRect   textField frame     adjustForKeyboard      func textFieldDidEndEditing textField  UITextField        activeFieldRect   nil     adjustForKeyboard

User · Answer

Swift 3 syntax    func textFieldDidBeginEditing   textField  UITextField           add if for some desired textfields         animateViewMoving up  true  moveValue  100     func textFieldDidEndEditing   textField  UITextField           add if for some desired textfields         animateViewMoving up  false  moveValue  100     func animateViewMoving  up Bool  moveValue  CGFloat        textFieldDidEndEditing   textField  UITextField         let movementDuration TimeInterval   0 5      let movement CGFloat     up   -moveValue   moveValue       UIView beginAnimations  animateView   context  nil       UIView setAnimationBeginsFromCurrentState true       UIView setAnimationDuration movementDuration       self view frame   self view frame offsetBy dx  0  dy  movement       UIView commitAnimations       this is a nice method to get what you want  you can add  if  conditions for certain textfields  but this type works for all    Hope it can be useful for everyone

User · Answer

I use SwiftLint  which had a few issues with the formatting of the accepted answer  Specifically   no space before the colon  no force casting  prefer UIEdgeInset top  etc    instead of UIEdgeInsetMake    so here are those updates for Swift 3  func registerForKeyboardNotifications           Adding notifies on keyboard appearing     NotificationCenter default addObserver self  selector   selector keyboardWasShown notification     name  NSNotification Name UIKeyboardWillShow  object  nil      NotificationCenter default addObserver self  selector   selector keyboardWillBeHidden notification     name  NSNotification Name UIKeyboardWillHide  object  nil     func deregisterFromKeyboardNotifications           Removing notifies on keyboard appearing     NotificationCenter default removeObserver self  name  NSNotification Name UIKeyboardWillShow  object  nil      NotificationCenter default removeObserver self  name  NSNotification Name UIKeyboardWillHide  object  nil     func keyboardWasShown notification  NSNotification          Need to calculate keyboard exact size due to Apple suggestions     scrollView  isScrollEnabled   true     var info   notification userInfo      if let keyboardSize    info UIKeyboardFrameBeginUserInfoKey  as  NSValue   cgRectValue size           let contentInsets  UIEdgeInsets   UIEdgeInsets top  0 0  left  0 0  bottom  keyboardSize height  right  0 0           scrollView  contentInset   contentInsets         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                                   func keyboardWillBeHidden notification  NSNotification          Once keyboard disappears  restore original positions     var info   notification userInfo      if let keyboardSize    info UIKeyboardFrameBeginUserInfoKey  as  NSValue   cgRectValue size           let contentInsets  UIEdgeInsets   UIEdgeInsets top  0 0  left  0 0  bottom  -keyboardSize height  right  0 0          scrollView  contentInset   contentInsets         scrollView  scrollIndicatorInsets   contentInsets            view endEditing true      scrollView  isScrollEnabled   false    func textFieldDidBeginEditing   textField  UITextField        activeField   textField    func textFieldDidEndEditing   textField  UITextField        activeField   nil

User · Answer

Swift 4  You Can Easily Move Up And Down UITextField With Keyboard With Animation    import UIKit  class ViewController  UIViewController         IBOutlet var textField  UITextField       override func viewDidLoad             super viewDidLoad           NotificationCenter default addObserver self  selector   selector keyboardWillChange   name   UIKeyboardWillChangeFrame  object  nil             override func touchesBegan   touches  Set lt UITouch gt   with event  UIEvent             textField resignFirstResponder               objc func keyboardWillChange notification  NSNotification             let duration   notification userInfo  UIKeyboardAnimationDurationUserInfoKey  as  Double         let curve   notification userInfo  UIKeyboardAnimationCurveUserInfoKey  as  UInt         let curFrame    notification userInfo  UIKeyboardFrameBeginUserInfoKey  as  NSValue  cgRectValue         let targetFrame    notification userInfo  UIKeyboardFrameEndUserInfoKey  as  NSValue  cgRectValue         let deltaY   targetFrame origin y - curFrame origin y          UIView animateKeyframes withDuration  duration  delay  0 0  options  UIViewKeyframeAnimationOptions rawValue  curve   animations                self textField frame origin y  deltaY            completion  nil

User · Answer

Awesome answers are already given but this is a different way to deal with this situation  using Swift 3x    First of all call the following method in viewWillAppear    func registerForKeyboardNotifications      NotificationCenter default addObserver self  selector   selector self keyboardWasShown   name  NSNotification Name UIKeyboardDidShow  object  nil  NotificationCenter default addObserver self  selector   selector self keyboardWillBeHidden   name  NSNotification Name UIKeyboardWillHide  object  nil       Now take one IBOutlet of UIView s top constraints of your UIViewcontroller like this   here the UIView is the subview of UIScrollView that means you should have a UIScrollView for all your subViews    IBOutlet weak var loginViewTopConstraint  NSLayoutConstraint    And an another variable like following and add a delegate i e  UITextFieldDelegate   var activeTextField   UITextField     This is to keep the reference of UITextField currently active   After that here is the magical part just paste this below snippet   func keyboardWasShown   notification  Notification     let keyboardInfo    notification userInfo as NSDictionary     print keyboardInfo    let keyboardFrameEnd  NSValue     keyboardInfo  value forKey  UIKeyboardFrameEndUserInfoKey  as  NSValue   let keyboardFrameEndRect  CGRect    keyboardFrameEnd  cgRectValue   if activeTextField frame origin y   activeTextField frame size height   10  gt   keyboardFrameEndRect  origin y          UIView animate withDuration  0 3  delay  0  options   transitionFlipFromTop  animations      - gt  Void in            code with animation            Print some stuff to know what is actually happening           print self activeTextField frame origin y            print self activeTextField frame size height            print self activeTextField frame size height           self loginViewTopConstraint constant   - self activeTextField frame origin y   self activeTextField frame size height -  keyboardFrameEndRect  origin y    - 30 0          self view layoutIfNeeded           completion      finished  Bool  - gt  Void in           code for completion              func keyboardWillBeHidden   notification  Notification     UIView animate withDuration  0 3  animations      - gt  Void in      self loginViewTopConstraint constant   self view frame origin y     self view layoutIfNeeded            MARK  textfield delegates func textFieldShouldBeginEditing   textField  UITextField  - gt  Bool       activeTextField   textField     return true    func textFieldShouldReturn   textField  UITextField  - gt  Bool               switch textField       case YOUR TEXTFIELD ONE          YOUR TEXTFIELD TWO becomeFirstResponder           break     case YOUR TEXTFIELD TWO          YOUR TEXTFIELD THREE becomeFirstResponder           break     default          textField resignFirstResponder           break           return true     Now the last snippet     Remove Keyboard Observers override func viewWillDisappear   animated  Bool     NotificationCenter default removeObserver self  name  NSNotification Name UIKeyboardDidShow  object  nil   NotificationCenter default removeObserver self  name  NSNotification Name UIKeyboardWillHide  object  nil      Don t forget to assign delegates to all your UITextFields  in UIStoryboard  Good luck

User · Answer

for swift 4 2  This will apply to any form  No need of scrollview  do not forget to set delegate   Make a var of uitextfield var clickedTextField   UITextField    In your viewdid load NotificationCenter default addObserver self  selector   selector keyboardWillShow   name NSNotification Name UIKeyboardWillShow  object  nil   NotificationCenter default addObserver self  selector   selector keyboardWillHide   name NSNotification Name UIKeyboardWillHide  object  nil    Know the clicked text field  probably you are having textfields on the entire screen  func textFieldDidBeginEditing   textField  UITextField        clickedTextField   textField    Check if the keyboard is covering textfield or not   objc func keyboardWillShow sender  NSNotification   textField   UITextField        if let keyboardSize    sender userInfo  UIKeyboardFrameEndUserInfoKey  as  NSValue   cgRectValue            if clickedTextField frame origin y  gt  keyboardSize origin y               self view frame origin y   keyboardSize origin y - clickedTextField center y - 20                     objc func keyboardWillHide sender  NSNotification        self view frame origin y   0    Return to close keyboard func textFieldShouldReturn   textField  UITextField  - gt  Bool       delegate method     textField resignFirstResponder       return true    UPDATE   NSNotification Name UIKeyboardWillShow  amp  NSNotification Name UIKeyboardWillHide are renamed to UIResponder keyboardWillShowNotification  amp  UIResponder keyboardWillHideNotification respectively

User · Answer

For Swift 4 2  This code will allow you to control the Y axis moment of the frame for a specific device screen size    PS  This code will not intelligently move the frame based on the location of TextField    Create an extension for UIDevice  extension UIDevice       enum ScreenType  String           case iPhone4 4S    iPhone 4 or iPhone 4s          case iPhones 5 5s 5c SE    iPhone 5  iPhone 5s  iPhone 5c or iPhone SE          case iPhones 6 6s 7 8    iPhone 6  iPhone 6s  iPhone 7 or iPhone 8          case iPhones 6Plus 6sPlus 7Plus 8Plus    iPhone 6 Plus  iPhone 6s Plus  iPhone 7 Plus or iPhone 8 Plus          case iPhoneX Xs    iPhone X  iPhone Xs          case iPhoneXR    iPhone XR          case iPhoneXSMax    iPhone Xs Max          case unknown           var screenType  ScreenType           switch UIScreen main nativeBounds height           case 960              return  iPhone4 4S         case 1136              return  iPhones 5 5s 5c SE         case 1334              return  iPhones 6 6s 7 8         case 1920  2208              return  iPhones 6Plus 6sPlus 7Plus 8Plus         case 1792              return  iPhoneXR         case 2436              return  iPhoneX Xs         case 2688              return  iPhoneXSMax         default              return  unknown                     Add NotificationObserver on viewDidLoad  NotificationCenter default addObserver self  selector   selector keyboardWillShow   name  UIResponder keyboardWillShowNotification  object  nil  NotificationCenter default addObserver self  selector   selector keyboardWillHide   name  UIResponder keyboardWillHideNotification  object  nil    Selector   objc func keyboardWillShow notification  NSNotification        if   notification userInfo  UIResponder keyboardFrameBeginUserInfoKey  as  NSValue   cgRectValue     nil           if self view frame origin y    0               switch  UIDevice current screenType rawValue                case  UIDevice ScreenType iPhones 5 5s 5c SE rawValue                   self view frame origin y -  210             case  UIDevice ScreenType iPhones 6 6s 7 8 rawValue                   self view frame origin y -  110             case  UIDevice ScreenType iPhones 6Plus 6sPlus 7Plus 8Plus rawValue                   self view frame origin y -  80             case  UIDevice ScreenType iPhoneX Xs rawValue                   self view frame origin y -  70             case  UIDevice ScreenType iPhoneXR rawValue                   self view frame origin y -  70             case  UIDevice ScreenType iPhoneXSMax rawValue                   self view frame origin y -  70             default                  self view frame origin y -  150                                   objc func keyboardWillHide notification  NSNotification        if   notification userInfo  UIResponder keyboardFrameBeginUserInfoKey  as  NSValue   cgRectValue     nil           if self view frame origin y    0               switch  UIDevice current screenType rawValue                case  UIDevice ScreenType iPhones 5 5s 5c SE rawValue                   self view frame origin y    210             case  UIDevice ScreenType iPhones 6 6s 7 8 rawValue                   self view frame origin y    110             case  UIDevice ScreenType iPhones 6Plus 6sPlus 7Plus 8Plus rawValue                   self view frame origin y    80             case  UIDevice ScreenType iPhoneX Xs rawValue                   self view frame origin y    70             case  UIDevice ScreenType iPhoneXR rawValue                   self view frame origin y    70             case  UIDevice ScreenType iPhoneXSMax rawValue                   self view frame origin y    70             default                  self view frame origin y    150

User · Answer

Why not implement this in a UITableViewController instead  The keyboard won t hide any text fields when its shown

User · Answer

I think this clause is wrong   if   CGRectContainsPoint aRect  activeField  frame origin     While the activeField s origin may well be above the keyboard  the maxY might not     I would create a  max  point for the activeField and check if that is in the keyboard Rect

User · Answer

Rewritten for swift 4 2  In ViewDidLoad     NotificationCenter default addObserver self  selector   selector trailViewController keyboardWasShown   name  UIResponder keyboardWillShowNotification  object  nil   NotificationCenter default addObserver self  selector   selector trailViewController keyboardWillBeHidden   name  UIResponder keyboardWillHideNotification  object  nil    Remaining Funtions  func registerForKeyboardNotifications          Adding notifies on keyboard appearing     NotificationCenter default addObserver self  selector   selector keyboardWasShown notification     name  UIResponder keyboardWillShowNotification  object  nil      NotificationCenter default addObserver self  selector   selector keyboardWillBeHidden notification     name  UIResponder keyboardWillHideNotification  object  nil     func deregisterFromKeyboardNotifications          Removing notifies on keyboard appearing     NotificationCenter default removeObserver self  name  UIResponder keyboardWillShowNotification  object  nil      NotificationCenter default removeObserver self  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

User · Answer

Just use this extension to move any UIView when keyboard is presented   extension UIView       func bindToKeyboard            NotificationCenter default addObserver self  selector   selector self keyboardWillChange       name  NSNotification Name UIKeyboardWillChangeFrame  object  nil              objc func keyboardWillChange   notification  NSNotification           let duration   notification userInfo  UIKeyboardAnimationDurationUserInfoKey  as  Double         let curve   notification userInfo  UIKeyboardAnimationCurveUserInfoKey  as  UInt         let beginningFrame    notification userInfo  UIKeyboardFrameBeginUserInfoKey  as  NSValue  cgRectValue         let endFrame    notification userInfo  UIKeyboardFrameEndUserInfoKey  as  NSValue  cgRectValue          let deltaY   endFrame origin y - beginningFrame origin y          UIView animateKeyframes withDuration  duration  delay  0 0  options  UIViewKeyframeAnimationOptions rawValue  curve   animations                self frame origin y    deltaY            completion  nil            Then in your viewdidload bind your view to the keyboard   UiView bindToKeyboard

User · Answer

Swift  You can do this by checking which textField is being presented    objc func keyboardWillShow notification  NSNotification        if self textField isFirstResponder    true           self view frame origin y -  150            objc func keyboardWillHide notification  NSNotification       if self textField isFirstResponder    true          self view frame origin y    150

User · Answer

This code moves up the text field you are editing so that you can view it in Swift 3 for this answer you also have to make your view a UITextFieldDelegate   var moveValue  CGFloat  var moved  Bool   false var activeTextField   UITextField    func textFieldDidBeginEditing   textField  UITextField        self activeTextField   textField   func textFieldDidEndEditing   textField  UITextField        if moved    true      self animateViewMoving up  false  moveValue  moveValue           moved   false         func animateViewMoving  up Bool  moveValue  CGFloat       let movementDuration TimeInterval   0 3     let movement CGFloat     up   -moveValue   moveValue       UIView beginAnimations  animateView   context  nil      UIView setAnimationBeginsFromCurrentState true      UIView setAnimationDuration movementDuration       self view frame   self view frame offsetBy dx  0  dy  movement      UIView commitAnimations       And then in viewDidLoad   NotificationCenter default addObserver self  selector   selector keyboardWillShow   name   UIKeyboardWillShow  object  nil    Which calls  outside viewDidLoad    func keyboardWillShow notification  Notification        if let keyboardSize    notification userInfo  UIKeyboardFrameBeginUserInfoKey  as  NSValue   cgRectValue           let keyboardHeight   keyboardSize height         if  view frame size height-self activeTextField frame origin y  - self activeTextField frame size height  lt  keyboardHeight              moveValue   keyboardHeight -   view frame size height-self activeTextField frame origin y  - self activeTextField frame size height              self animateViewMoving up  true  moveValue  moveValue               moved   true

User · Answer

The accepted anwser is nearly perfect   But I need to use UIKeyboardFrameEndUserInfoKey instead of UIKeyboardFrameBeginUserInfoKey  because the latter return keyborad height 0  And change the hittest point to the bottom not origin        var aRect   CGRect   self view frame     aRect size height -  keyboardSize  height     if let activeField   self activeField           var point   activeField frame origin         point y    activeField frame size height         if   aRect contains point                self scrollView scrollRectToVisible activeField frame  animated  true

User · Answer

Since there were no answer on how to do this in Combine  here is the approach i used   We create a publisher to listen to both Notifications  show and hide  For show we get the frame of the keyboard from the notifications userInfo and check if the current active responder is contained in it  If it s covered return keyboard frame height  If it is not covered return 0  we don t want to move the frame  For the hide notification we simply return 0   private var keyboardHeightPublisher  AnyPublisher lt CGFloat  Never gt        Publishers Merge          NotificationCenter default              publisher for  UIResponder keyboardWillShowNotification               compactMap    0 userInfo  UIResponder keyboardFrameEndUserInfoKey  as  CGRect                map    0 intersects self view firstResponder  frame     0 height   0                map    0   -1            NotificationCenter default              publisher for  UIResponder keyboardWillHideNotification               map     in CGFloat 0          eraseToAnyPublisher      In the viewDidLoad we simply subscribe to the publisher changing the views frame accordingly  override func viewDidLoad         super viewDidLoad        keyboardHeightPublisher sink   weak self  height in         self  view frame origin y   height       store in   amp cancelables     EDIT Be careful  If the firstResponder is in a subview  you have to calculate the frame corresponding to the whole screen to check if they actually intersect  Example  let myViewGlobalFrame   myView convert myView frame  to  parentView

User · Answer

First of all declare a variable to identify your active UITextField   Step 1 -  Like as var activeTextField  UITextField   Step 2 -  After this add these two lines in viewDidLoad   NotificationCenter default addObserver self  selector   selector self keyboardWillShow       name  NSNotification Name UIKeyboardWillShow  object  nil   NotificationCenter default addObserver self  selector   selector self keyboardWillHide       name  NSNotification Name UIKeyboardWillHide  object  nil    Step 3 -   Now define these two methods in your controller class   func keyboardWillShow   notification  NSNotification         self scrollView isScrollEnabled   true     var info   notification userInfo      let keyboardSize    info UIKeyboardFrameBeginUserInfoKey  as  NSValue   cgRectValue size     let 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 activeField   self activeField           if   aRect contains activeField frame origin                self scrollView scrollRectToVisible activeField frame  animated  true                      func keyboardWillHide   notification  NSNotification         let contentInsets   UIEdgeInsets   UIEdgeInsetsMake 0 0  0 0  0 0  0 0      self scrollView contentInset   contentInsets     self scrollView scrollIndicatorInsets   contentInsets     self view endEditing true      self scrollView isScrollEnabled   true     func textFieldDidBeginEditing   textField  UITextField        activeField   textField    func textFieldDidEndEditing   textField  UITextField        activeField   nil

User · Answer

Is there a way to have the screen only move when the bottom fields are edited    I had a similar problem and found a pretty straightforward solution without using a scrollView  and instead using if statements within the keyboardWillShow Hide methods   func keyboardWillShow notification  NSNotification        if bottomText editing          self view window  frame origin y   -1   getKeyboardHeight notification           func keyboardWillHide notification  NSNotification        if self view window  frame origin y    0           self view window  frame origin y    getKeyboardHeight notification            This was a good solution for me because I only had two text fields   Shifts whole view up  only when certain text fields  bottomText  are edited  Shifts whole view down  only when the view is not at the original location

User · Answer

Swift 4 Updated my solution  with constraint animation on keyboard show hide  enjoy   import Foundation import UIKit  class PhoneController  UIViewController  UITextFieldDelegate       var phoneLayoutYConstraint  NSLayoutConstraint       override func viewDidLoad              super viewDidLoad            view backgroundColor    white          NotificationCenter default addObserver self  selector   selector handleKeyBoardNotification       name  NSNotification Name UIKeyboardWillShow  object  nil          NotificationCenter default addObserver self  selector   selector handleKeyBoardNotification       name  NSNotification Name UIKeyboardWillHide  object  nil          phoneField delegate   self          view addSubview phoneField           NSLayoutConstraint activate  phoneField heightAnchor constraint equalToConstant  50                                        phoneField centerXAnchor constraint equalTo  view centerXAnchor                                        phoneField leadingAnchor constraint equalTo  view leadingAnchor  constant  20                                        phoneField trailingAnchor constraint equalTo  view trailingAnchor  constant  -20             phoneLayoutYConstraint   NSLayoutConstraint item  phoneField  attribute   bottom  relatedBy   equal  toItem  view  attribute   bottom  multiplier  1  constant  0          phoneLayoutYConstraint  isActive   true             let phoneField  UITextField             let text   UITextField           text translatesAutoresizingMaskIntoConstraints   false         text keyboardType    numberPad         text font   UIFont systemFont ofSize  30          text layer cornerRadius   5 0         text layer masksToBounds   true         text layer borderColor   UIColor darkGray cgColor         text layer borderWidth   2 0          return text               override func viewDidDisappear   animated  Bool            super viewWillDisappear animated          NotificationCenter default removeObserver self             func textFieldDidBeginEditing   textField  UITextField                 func textFieldDidEndEditing   textField  UITextField                func textFieldShouldReturn   textField  UITextField  - gt  Bool           textField resignFirstResponder           return true             objc func handleKeyBoardNotification   notification  NSNotification             if let info   notification userInfo                let keyboardSize    info UIKeyboardFrameBeginUserInfoKey  as  NSValue   cgRectValue size             let isKeyBoardShowing   notification name    NSNotification Name UIKeyboardWillShow              var aRect   CGRect   self phoneField frame             aRect size height -  keyboardSize  height               phoneLayoutYConstraint  constant   isKeyBoardShowing   -keyboardSize  height   0              UIView animate withDuration  0  delay  0  options   curveEaseOut  animations                    self view layoutIfNeeded                  completion     boo  in

User · Answer

Swift 3   IBOutlet var scrollView  UIScrollView   IBOutlet var edtEmail  UITextField   IBOutlet var bottomTextfieldConstrain  NSLayoutConstraint      lt - this guy is the constrain that connect the bottom of textField to lower object or bottom of page     IBAction func edtEmailEditingDidBegin   sender  Any             self bottomTextfieldConstrain constant   200         let point   CGPoint x  0  y  200          scrollView contentOffset   point         IBAction func edtEmailEditingDidEnd   sender  Any         self bottomTextfieldConstrain constant   50

User · Answer

I forgot to mention that I am new to Swift    What would be the correct syntax to check this   how do I get the field name in this function      Ok   First confirm to the UITextFieldDelegate protocol  class YourClass UITextFieldDelegate   Then implement the function  func textFieldDidBeginEditing textField  UITextField          if textField    txtOne               println  TextOne             if textField    txtTwo               println  TextTwo             You should note that the proper approach is to use a scrollview and place the view that should be shifted up down inside the scroll view and handle keyboard events accordingly

User · Answer

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

User · Answer

Swift 4 2  My solution will  vertically  center the view on a UITextField if its position is under the keyboard   Step 1  Create new swift file and copy-paste UIViewWithKeyboard class  Step 2  In Interface Builder set it as a Custom Class for your top most UIView   import UIKit  class UIViewWithKeyboard  UIView        IBInspectable var offsetMultiplier  CGFloat   0 75     private var keyboardHeight   0 as CGFloat     private weak var activeTextField  UITextField      override func awakeFromNib             super awakeFromNib           NotificationCenter default addObserver self  selector   selector UIViewWithKeyboard textDidBeginEditing                                                  name  UITextField textDidBeginEditingNotification  object  nil          NotificationCenter default addObserver self  selector   selector UIViewWithKeyboard keyboardWillShow                                                  name  UIResponder keyboardWillShowNotification  object  nil          NotificationCenter default addObserver self  selector   selector UIViewWithKeyboard keyboardWillHide                                                  name  UIResponder keyboardWillHideNotification  object  nil              objc func textDidBeginEditing   notification  NSNotification            self activeTextField   notification object as  UITextField             objc func keyboardWillShow   notification  Notification            if let frameValue   notification userInfo  UIResponder keyboardFrameEndUserInfoKey  as  NSValue               keyboardHeight   frameValue cgRectValue size height             if let textField   self activeTextField                   let offset   textField frame maxY  lt  frame maxY - keyboardHeight   0                              textField frame maxY -  frame maxY - keyboardHeight    offsetMultiplier                 self setView offset  offset                                      objc func keyboardWillHide   notification  NSNotification            self setView offset  0             func setView offset  CGFloat            UIView animate withDuration  0 25                self bounds origin y   offset

User · Answer

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

User · Answer

Swift 4    updated  with extension     add the buttons in one container connect bottom constraint of the container with IBOutlet containerBtmConstrain inViewDidLoad     self containerDependOnKeyboardBottomConstrain   containerBtmConstrain self watchForKeyboard     add the following extension  import UIKit  private var xoAssociationKeyForBottomConstrainInVC  UInt8   0  extension UIViewController        var containerDependOnKeyboardBottomConstrain  NSLayoutConstraint            get               return objc getAssociatedObject self   amp xoAssociationKeyForBottomConstrainInVC  as  NSLayoutConstraint                   set newValue                objc setAssociatedObject self   amp xoAssociationKeyForBottomConstrainInVC  newValue  objc AssociationPolicy OBJC ASSOCIATION RETAIN                       func watchForKeyboard             NotificationCenter default addObserver self  selector   selector self keyboardWasShown notification     name UIResponder keyboardWillShowNotification  object  nil           NotificationCenter default addObserver self  selector   selector self keyboardWillHide notification     name UIResponder keyboardWillHideNotification  object  nil               objc func keyboardWasShown notification  NSNotification            let info   notification userInfo          guard let keyboardFrame  CGRect    info UIResponder keyboardFrameEndUserInfoKey  as  NSValue   cgRectValue else             return                    UIView animate withDuration  0 3  animations       - gt  Void in             self containerDependOnKeyboardBottomConstrain constant   -keyboardFrame height             self view layoutIfNeeded                          objc func keyboardWillHide notification  NSNotification            UIView animate withDuration  0 3  animations       - gt  Void in             self containerDependOnKeyboardBottomConstrain constant   0             self view layoutIfNeeded

User · Answer

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   UIApplicationMain class AppDelegate  UIResponder  UIApplicationDelegate        var window  UIWindow       func application application  UIApplication  didFinishLaunchingWithOptions launchOptions   NSObject  AnyObject    - gt  Bool        IQKeyboardManager sharedManager   enable   true        For Swift 4  use this instead        IQKeyboardManager shared enable   true       return true           And that is all  Easy

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

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