How to get the screen width and height in iOS

Question

How can one get the dimensions of the screen in iOS   Currently  I use   lCurrentWidth   self view frame size width  lCurrentHeight   self view frame size height    in viewWillAppear  and willAnimateRotationToInterfaceOrientation duration   The first time I get the entire screen size  The second time i get the screen minus the nav bar

User · Answer

It s very  very easy to get your device size as well as take into account the orientation      grab the window frame and adjust it for orientation UIView  rootView      UIApplication sharedApplication  keyWindow                                      rootViewController  view  CGRect originalFrame     UIScreen mainScreen  bounds   CGRect adjustedFrame    rootView convertRect originalFrame fromView nil

User · Answer

How can one get the dimensions of the screen in iOS    The problem with the code that you posted is that you re counting on the view size to match that of the screen  and as you ve seen that s not always the case  If you need the screen size  you should look at the object that represents the screen itself  like this   CGRect screenRect     UIScreen mainScreen  bounds   CGFloat screenWidth   screenRect size width  CGFloat screenHeight   screenRect size height    Update for split view  In comments  Dmitry asked      How can I get the size of the screen in the split view    The code given above reports the size of the screen  even in split screen mode  When you use split screen mode  your app s window changes  If the code above doesn t give you the information you expect  then like the OP  you re looking at the wrong object  In this case  though  you should look at the window instead of the screen  like this   CGRect windowRect   self view window frame  CGFloat windowWidth   windowRect size width  CGFloat windowHeight   windowRect size height    Swift 4 2  let screenRect   UIScreen main bounds let screenWidth   screenRect size width let screenHeight   screenRect size height     split screen             let windowRect   self view window  frame let windowWidth   windowRect  size width let windowHeight   windowRect  size height

User · Answer

I realize that this is an old post  but sometimes I find it useful to  define constants like these so I do not have to worry about it    define DEVICE SIZE     UIApplication sharedApplication  keyWindow  rootViewController  view convertRect   UIScreen mainScreen  bounds  fromView nil  size   The above constant should return the correct size no matter the device orientation  Then getting the dimensions is as simple as   lCurrentWidth   DEVICE SIZE width  lCurrentHeight   DEVICE SIZE height

User · Answer

You can place these macros in your pch file and used at anywhere in project by using  SCREEN WIDTH     define SCREEN WIDTH                    UIApplication sharedApplication  statusBarOrientation    UIInterfaceOrientationPortrait       UIApplication sharedApplication  statusBarOrientation    UIInterfaceOrientationPortraitUpsideDown       UIScreen mainScreen  bounds  size width     UIScreen mainScreen  bounds  size height    and  SCREEN HEIGHT    define SCREEN HEIGHT                   UIApplication sharedApplication  statusBarOrientation    UIInterfaceOrientationPortrait       UIApplication sharedApplication  statusBarOrientation      UIInterfaceOrientationPortraitUpsideDown       UIScreen mainScreen  bounds  size height     UIScreen mainScreen  bounds  size width    Example of using   CGSize calCulateSizze   calCulateSizze width   SCREEN WIDTH 2-8  calCulateSizze height   SCREEN WIDTH 2-8

User · Answer

The modern answer   if your app support split view on iPad  this problem becomes a little complicated  You need window s size  not the screen s  which may contain 2 apps  Window s size may also vary while running   Use app s main window s size   UIApplication shared delegate  window   bounds size     zero   Note  The method above may get wrong value before window becoming key window when starting up  if you only need width  method below is very recommended   UIApplication shared statusBarFrame width     The old solution using UIScreen main bounds will return the device s bounds  If your app running in split view mode  it get the wrong dimensions    self view window in the hottest answer may get wrong size when app contains 2 or more windows and the window have small size

User · Answer

Careful   UIScreen mainScreen  contains status bar as well  if you want to retrieve the frame for your application  excluding status bar  you should use     CGFloat  window height         return  UIScreen mainScreen  applicationFrame size height        CGFloat  window width         return  UIScreen mainScreen  applicationFrame size width

User · Answer

Here is a Swift way to get screen sizes   print screenWidth  print screenHeight   var screenWidth  CGFloat       if UIInterfaceOrientationIsPortrait screenOrientation            return UIScreen mainScreen   bounds size width       else           return UIScreen mainScreen   bounds size height          var screenHeight  CGFloat       if UIInterfaceOrientationIsPortrait screenOrientation            return UIScreen mainScreen   bounds size height       else           return UIScreen mainScreen   bounds size width          var screenOrientation  UIInterfaceOrientation       return UIApplication sharedApplication   statusBarOrientation     These are included as a standard function in   https   github com goktugyil EZSwiftExtensions

User · Answer

If you want screen width height regardless of device orientation  good for sizing portrait only view controllers being launched from landscape orientations    CGFloat screenWidthInPoints    UIScreen mainScreen  nativeBounds size width  UIScreen mainScreen  nativeScale  CGFloat screenHeightInPoints    UIScreen mainScreen  nativeBounds size height  UIScreen mainScreen  nativeScale        UIScreen mainScreen  nativeBounds  lt -- From the docs --  The bounding rectangle of the physical screen  measured in pixels  This rectangle is based on the device in a portrait-up orientation  This value does not change as the device rotates

User · Answer

NSLog     0f     UIScreen mainScreen  bounds  size width   NSLog     0f     UIScreen mainScreen  bounds  size height

User · Answer

swift 3 0  for width  UIScreen main bounds size width   for height  UIScreen main bounds size height

User · Answer

I ve translated some of the above Objective-C answers into Swift code  Each translation is proceeded with a reference to the original answer  Main Answer let screen   UIScreen main bounds let screenWidth   screen size width let screenHeight   screen size height    Simple Function Answer func windowHeight   - gt  CGFloat       return UIScreen main bounds size height    func windowWidth   - gt  CGFloat       return UIScreen main bounds size width      Device Orientation Answer let screenHeight  CGFloat let statusBarOrientation   UIApplication shared statusBarOrientation    it is important to do this after presentModalViewController animated  if  statusBarOrientation     portrait      amp  amp  statusBarOrientation     portraitUpsideDown        screenHeight   UIScreen main bounds size width   else       screenHeight   UIScreen main bounds size height      Log Answer let screenWidth   UIScreen main bounds size width let screenHeight   UIScreen main bounds size height println  quot width    screenWidth  quot   println  quot height    screenHeight  quot

User · Answer

I have used these convenience methods before   -  CGRect getScreenFrameForCurrentOrientation       return  self getScreenFrameForOrientation  UIApplication sharedApplication  statusBarOrientation      -  CGRect getScreenFrameForOrientation  UIInterfaceOrientation orientation        CGRect fullScreenRect     UIScreen mainScreen  bounds           implicitly in Portrait orientation      if  UIInterfaceOrientationIsLandscape orientation           CGRect temp   CGRectZero        temp size width   fullScreenRect size height        temp size height   fullScreenRect size width        fullScreenRect   temp             if     UIApplication sharedApplication  statusBarHidden           CGFloat statusBarHeight   20     Needs a better solution  FYI statusBarFrame reports wrong in some cases         fullScreenRect size height -  statusBarHeight             return fullScreenRect

User · Answer

We have to consider the orientation of device too      CGFloat screenHeight     it is important to do this after presentModalViewController animated  if    UIApplication sharedApplication  statusBarOrientation     UIDeviceOrientationPortrait      UIApplication sharedApplication  statusBarOrientation     UIDeviceOrientationPortraitUpsideDown       screenHeight    UIScreen mainScreen  applicationFrame size height    else      screenHeight    UIScreen mainScreen  applicationFrame size width

User · Answer

CGFloat width     UIScreen mainScreen  bounds  size width  CGFloat height     UIScreen mainScreen bounds   size height

User · Answer

Here i have updated for swift 3  applicationFrame  deprecated from iOS 9  In swift three they have removed    and they have changed few naming convention  you can refer here Link  func windowHeight   - gt  CGFloat       return UIScreen main bounds size height    func windowWidth   - gt  CGFloat       return UIScreen main bounds size width

User · Answer

Make use of these Structs to know useful info about the current device in Swift 3 0  struct ScreenSize      Answer to OP s question      static let SCREEN WIDTH           UIScreen main bounds size width     static let SCREEN HEIGHT          UIScreen main bounds size height     static let SCREEN MAX LENGTH      max ScreenSize SCREEN WIDTH  ScreenSize SCREEN HEIGHT      static let SCREEN MIN LENGTH      min ScreenSize SCREEN WIDTH  ScreenSize SCREEN HEIGHT      struct DeviceType     Use this to check what is the device kind you re working with      static let IS IPHONE 4 OR LESS    UIDevice current userInterfaceIdiom     phone  amp  amp  ScreenSize SCREEN MAX LENGTH  lt  568 0     static let IS IPHONE SE           UIDevice current userInterfaceIdiom     phone  amp  amp  ScreenSize SCREEN MAX LENGTH    568 0     static let IS IPHONE 7            UIDevice current userInterfaceIdiom     phone  amp  amp  ScreenSize SCREEN MAX LENGTH    667 0     static let IS IPHONE 7PLUS        UIDevice current userInterfaceIdiom     phone  amp  amp  ScreenSize SCREEN MAX LENGTH    736 0     static let IS IPHONE X            UIDevice current userInterfaceIdiom     phone  amp  amp  ScreenSize SCREEN MAX LENGTH    812 0     static let IS IPAD                UIDevice current userInterfaceIdiom     pad  amp  amp  ScreenSize SCREEN MAX LENGTH    1024 0      struct iOSVersion     Get current device s iOS version      static let SYS VERSION FLOAT     UIDevice current systemVersion as NSString  floatValue     static let iOS7                  iOSVersion SYS VERSION FLOAT  gt   7 0  amp  amp  iOSVersion SYS VERSION FLOAT  lt  8 0      static let iOS8                  iOSVersion SYS VERSION FLOAT  gt   8 0  amp  amp  iOSVersion SYS VERSION FLOAT  lt  9 0      static let iOS9                  iOSVersion SYS VERSION FLOAT  gt   9 0  amp  amp  iOSVersion SYS VERSION FLOAT  lt  10 0      static let iOS10                 iOSVersion SYS VERSION FLOAT  gt   10 0  amp  amp  iOSVersion SYS VERSION FLOAT  lt  11 0      static let iOS11                 iOSVersion SYS VERSION FLOAT  gt   11 0  amp  amp  iOSVersion SYS VERSION FLOAT  lt  12 0      static let iOS12                 iOSVersion SYS VERSION FLOAT  gt   12 0  amp  amp  iOSVersion SYS VERSION FLOAT  lt  13 0

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