How to get height of Keyboard

Question

The height of a keyboard on varying iOS devices is different  Does anybody know how I can get height of a device s keyboard programmatically

User · Accepted Answer

Swift You can get the keyboard height by subscribing to the UIKeyboardWillShowNotification notification   Assuming you want to know what the height will be before it s shown   Swift 4 NotificationCenter default addObserver      self      selector   selector keyboardWillShow       name  UIResponder keyboardWillShowNotification      object  nil     objc func keyboardWillShow   notification  Notification        if let keyboardFrame  NSValue   notification userInfo  UIResponder keyboardFrameEndUserInfoKey  as  NSValue           let keyboardRectangle   keyboardFrame cgRectValue         let keyboardHeight   keyboardRectangle height          Swift 3 NotificationCenter default addObserver      self      selector   selector keyboardWillShow       name  NSNotification Name UIKeyboardWillShow      object  nil     objc func keyboardWillShow   notification  Notification        if let keyboardFrame  NSValue   notification userInfo  UIKeyboardFrameEndUserInfoKey  as  NSValue           let keyboardRectangle   keyboardFrame cgRectValue         let keyboardHeight   keyboardRectangle height          Swift 2 NSNotificationCenter defaultCenter   addObserver self  selector   quot keyboardWillShow  quot   name  UIKeyboardWillShowNotification  object  nil   func keyboardWillShow notification  NSNotification            let userInfo  NSDictionary   notification userInfo          let keyboardFrame  NSValue   userInfo valueForKey UIKeyboardFrameEndUserInfoKey  as  NSValue         let keyboardRectangle   keyboardFrame CGRectValue           let keyboardHeight   keyboardRectangle height

User · Answer

Step 1  - Register NotificationCenter  ViewDidLoad         self yourtextfield becomefirstresponder          Register your Notification  To know When Key Board Appears      NotificationCenter default addObserver self  selector   selector SelectVendorViewController keyboardWillShow notification     name  NSNotification Name UIKeyboardWillShow  object  nil         Register your Notification  To know When Key Board Hides      NotificationCenter default addObserver self  selector   selector SelectVendorViewController keyboardWillHide notification     name  NSNotification Name UIKeyboardWillHide  object  nil         Step 2  -     These Methods will be called Automatically when Keyboard appears Or Hides      func keyboardWillShow notification NSNotification            let userInfo NSDictionary   notification userInfo  as NSDictionary         let keyboardFrame NSValue   userInfo value forKey  UIKeyboardFrameEndUserInfoKey  as  NSValue         let keyboardRectangle   keyboardFrame cgRectValue         let keyboardHeight   keyboardRectangle height         tblViewListData frame size height   fltTblHeight-keyboardHeight            func keyboardWillHide notification NSNotification            tblViewListData frame size height   fltTblHeight

User · Answer

I uses below code   override func viewDidLoad         super viewDidLoad       self registerObservers      func registerObservers         NotificationCenter default addObserver self  selector   selector keyboardWillAppear notification     name  UIResponder keyboardWillShowNotification  object  nil      NotificationCenter default addObserver self  selector   selector keyboardWillHide notification     name  UIResponder keyboardWillHideNotification  object  nil      override func touchesBegan   touches  Set lt UITouch gt   with event  UIEvent         self view endEditing true      objc func keyboardWillAppear notification  Notification       if let keyboardFrame  NSValue   notification userInfo  UIResponder keyboardFrameEndUserInfoKey  as  NSValue           let keyboardRectangle   keyboardFrame cgRectValue         let keyboardHeight   keyboardRectangle height         self view transform   CGAffineTransform translationX  0  y  -keyboardHeight            objc func keyboardWillHide notification  Notification           self view transform    identity

User · Answer

Swift 4      Simplest Method  override func viewDidLoad           super viewDidLoad         NotificationCenter default addObserver self  selector   selector keyboardWillShow   name   UIKeyboardWillShow  object  nil     func keyboardWillShow notification  NSNotification             if let keyboardSize    notification userInfo  UIKeyboardFrameBeginUserInfoKey  as  NSValue   cgRectValue                let keyboardHeight   Int   Int keyboardSize height               print  keyboardHeight  keyboardHeight

User · Answer

Swift 4 and Constraints   To your tableview add a bottom constraint relative to the bottom safe area  In my case the constraint is called tableViewBottomLayoutConstraint    IBOutlet weak var tableViewBottomLayoutConstraint  NSLayoutConstraint   override func viewWillAppear   animated  Bool        super viewWillAppear animated       NotificationCenter default addObserver self  selector   selector keyboardWillAppear notification     name   UIKeyboardWillShow  object  nil      NotificationCenter default addObserver self  selector   selector keyboardWillDisappear notification     name   UIKeyboardWillHide  object  nil     override func viewWillDisappear   animated  Bool        super viewWillDisappear animated       NotificationCenter default removeObserver self  name   UIKeyboardWillShow   object  nil      NotificationCenter default removeObserver self  name   UIKeyboardWillHide   object  nil      objc  func keyboardWillAppear notification  NSNotification          guard let keyboardFrame   notification  userInfo  UIKeyboardFrameEndUserInfoKey  as  NSValue else           return            let keyboardHeight  CGFloat     if  available iOS 11 0               keyboardHeight   keyboardFrame cgRectValue height - self view safeAreaInsets bottom       else           keyboardHeight   keyboardFrame cgRectValue height            tableViewBottomLayoutConstraint constant   keyboardHeight     objc  func keyboardWillDisappear notification  NSNotification         tableViewBottomLayoutConstraint constant   0 0

User · Answer

Update Swift 4 2  private func setUpObserver         NotificationCenter default addObserver self  selector   keyboardWillShow  name  UIResponder keyboardWillShowNotification  object  nil      selector method    objc fileprivate func keyboardWillShow notification NSNotification        if let keyboardRectValue    notification userInfo  UIResponder keyboardFrameEndUserInfoKey  as  NSValue   cgRectValue           let keyboardHeight   keyboardRectValue height           extension   private extension Selector       static let keyboardWillShow    selector YourViewController keyboardWillShow notification         Update Swift 3 0  private func setUpObserver         NotificationCenter default addObserver self  selector   keyboardWillShow  name   UIKeyboardWillShow  object  nil      selector method    objc fileprivate func keyboardWillShow notification NSNotification        if let keyboardRectValue    notification userInfo  UIKeyboardFrameEndUserInfoKey  as  NSValue   cgRectValue           let keyboardHeight   keyboardRectValue height           extension   private extension Selector       static let keyboardWillShow    selector YourViewController keyboardWillShow notification         Tip  UIKeyboardDidShowNotification or UIKeyboardWillShowNotification might called twice and got different result  this article explained why called twice   In Swift 2 2  Swift 2 2 deprecates using strings for selectors and instead introduces new syntax   selector   Something like   private func setUpObserver          NSNotificationCenter defaultCenter   addObserver self  selector   keyboardWillShow  name  UIKeyboardWillShowNotification  object  nil      selector method    objc private func keyboardWillShow notification NSNotification         let userInfo NSDictionary   notification userInfo      let keyboardFrame NSValue   userInfo valueForKey UIKeyboardFrameEndUserInfoKey  as  NSValue     let keyboardRectangle   keyboardFrame CGRectValue       let keyboardHeight   keyboardRectangle height     editorBottomCT constant   keyboardHeight     extension       private extension Selector        static let keyboardWillShow    selector YourViewController keyboardWillShow

User · Answer

Swift 3 0 and Swift 4 1 1- Register the notification in the viewWillAppear method  NotificationCenter default addObserver self  selector   selector keyboardWillShow   name   UIKeyboardWillShow  object  nil   2- Method to be called   objc func keyboardWillShow notification  NSNotification        if let keyboardSize    notification userInfo  UIKeyboardFrameEndUserInfoKey  as  NSValue   cgRectValue           let keyboardHeight   keyboardSize height         print keyboardHeight

User · Answer

Swift 5 override func viewDidLoad             Registering for keyboard notification      NotificationCenter default addObserver self  selector   selector self keyboardWillShow       name  UIResponder keyboardWillShowNotification  object  nil          UIKeyboardWillShowNotification          objc internal func keyboardWillShow   notification   Notification   - gt  Void                    var  kbSize CGSize                   if let info   notification  userInfo                let frameEndUserInfoKey   UIResponder keyboardFrameEndUserInfoKey                              Getting UIKeyboardSize              if let kbFrame   info frameEndUserInfoKey  as  CGRect                                    let screenSize   UIScreen main bounds                                    Calculating actual keyboard displayed size  keyboard frame may be different when hardware keyboard is attached  Bug ID   469   Bug ID   381                  let intersectRect   kbFrame intersection screenSize                                   if intersectRect isNull                        kbSize   CGSize width  screenSize size width  height  0                    else                        kbSize   intersectRect size                                   print  quot Your Keyboard Size    kbSize  quot

User · Answer

I had to do this  this is a bit of hackery  not suggested  but i found this very helpful I made extension and struct  ViewController Extension   Struct  import UIKit struct viewGlobal      static var bottomConstraint   NSLayoutConstraint   NSLayoutConstraint      extension UIViewController    keyboardHandler  func hideKeyboardWhenTappedAround         let tap  UITapGestureRecognizer   UITapGestureRecognizer target  self  action   selector dismissKeyboard       tap cancelsTouchesInView   false     view addGestureRecognizer tap      func listenerKeyboard bottomConstraint  NSLayoutConstraint        viewGlobal bottomConstraint   bottomConstraint     NotificationCenter default addObserver self  selector   selector keyboardWillShow notification     name  UIResponder keyboardWillShowNotification  object  nil         Register your Notification  To know When Key Board Hides      NotificationCenter default addObserver self  selector   selector keyboardWillHide notification     name  UIResponder keyboardWillHideNotification  object  nil        Dismiss Keyboard   objc func dismissKeyboard         view endEditing true       objc func keyboardWillShow notification NSNotification        let userInfo NSDictionary   notification userInfo  as NSDictionary     let keyboardFrame NSValue   userInfo value forKey  UIResponder keyboardFrameEndUserInfoKey  as  NSValue     let keyboardRectangle   keyboardFrame cgRectValue     let keyboardHeight   keyboardRectangle height     UIView animate withDuration  0 5           viewGlobal bottomConstraint constant   keyboardHeight             objc func keyboardWillHide notification NSNotification        UIView animate withDuration  0 5           viewGlobal bottomConstraint constant   0              Usage  get most bottom constraint   IBOutlet weak var bottomConstraint  NSLayoutConstraint     default 0   call the function inside viewDidLoad    override func viewDidLoad         super viewDidLoad        hideKeyboardWhenTappedAround       listenerKeyboard bottomConstraint  bottomConstraint          Do any additional setup after loading the view      Hope this help  -you keyboard will now auto close when user tap outside of textfield and -it will push all view to above keyboard when keyboard appear -you could also used dismissKeyboard   when ever you need it

User · Answer

Shorter version here   func keyboardWillShow notification  NSNotification             if let keyboardSize    notification userInfo  UIKeyboardFrameBeginUserInfoKey  as  NSValue   cgRectValue               let keyboardHeight   keyboardSize height

User · Answer

The method by ZAFAR007 updated for Swift 5 in Xcode 10  override func viewDidLoad         super viewDidLoad        NotificationCenter default addObserver self  selector   selector keyboardWillShow   name  UIResponder keyboardWillShowNotification  object  nil          objc func keyboardWillShow notification  NSNotification         if let keyboardSize    notification userInfo  UIResponder keyboardFrameBeginUserInfoKey  as  NSValue   cgRectValue           let keyboardHeight   Int   Int keyboardSize height          print  keyboardHeight  keyboardHeight

[ios] How to get height of Keyboard?

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