How to present popover properly in iOS 8

Question

I m trying to add a UIPopoverView to my Swift iOS 8 app  but I am unable to access the PopoverContentSize property  as the popover does not show in the correct shape  my code   var popover  UIPopoverController    nil       func addCategory          var newCategory   storyboard instantiateViewControllerWithIdentifier  NewCategory   as UIViewController     var nav   UINavigationController rootViewController  newCategory      popover   UIPopoverController contentViewController  nav      popover  setPopoverContentSize CGSizeMake 550  600   animated  true      popover  delegate   self     popover  presentPopoverFromBarButtonItem self navigationItem rightBarButtonItem  permittedArrowDirections  UIPopoverArrowDirection Any  animated  true      output     When I am doing the same thing through UIPopoverPresentationController  I still don t get it done  this is my code   func addCategory          var popoverContent   self storyboard instantiateViewControllerWithIdentifier  NewCategory   as UIViewController     var nav   UINavigationController rootViewController  popoverContent      nav modalPresentationStyle   UIModalPresentationStyle Popover     var popover   nav popoverPresentationController as UIPopoverPresentationController     popover delegate   self     popover popoverContentSize   CGSizeMake 1000  300      popover sourceView   self view     popover sourceRect   CGRectMake 100 100 0 0       self presentViewController nav  animated  true  completion  nil       I get the exact same output    How do I customize the size of my popover  Any help would be highly appreciated

User · Answer

Here i Convert  Joris416  Swift Code to Objective-c   - void  popoverstart       ViewController  controller    self storyboard instantiateViewControllerWithIdentifier   PopoverView        UINavigationController  nav     UINavigationController alloc initWithRootViewController controller       nav modalPresentationStyle   UIModalPresentationPopover      UIPopoverPresentationController  popover   nav popoverPresentationController      controller preferredContentSize   CGSizeMake 300  200       popover delegate   self      popover sourceView   self view      popover sourceRect   CGRectMake 100  100  0  0       popover permittedArrowDirections   UIPopoverArrowDirectionAny       self presentViewController nav animated YES completion nil      - UIModalPresentationStyle  adaptivePresentationStyleForPresentationController   UIPresentationController     controller       return UIModalPresentationNone      Remember to ADD UIPopoverPresentationControllerDelegate  UIAdaptivePresentationControllerDelegate

User · Answer

For those who wants to study  I created an Open Source project for those who want to study and use Popover view for anypurpose  You can find the project here  https   github com tryWabbit KTListPopup

User · Answer

Implement UIAdaptivePresentationControllerDelegate in your Viewcontroller  Then add     func adaptivePresentationStyle for controller  UIPresentationController  traitCollection  UITraitCollection  - gt  UIModalPresentationStyle      return  none

User · Answer

Swift 2 0  Well I worked out  Have a look  Made a ViewController in StoryBoard  Associated with PopOverViewController class       import UIKit  class PopOverViewController  UIViewController       override func viewDidLoad             super viewDidLoad               self preferredContentSize   CGSizeMake 200  200              self navigationItem leftBarButtonItem   UIBarButtonItem barButtonSystemItem   Done  target  self  action   dismiss                      func dismiss sender  AnyObject            self dismissViewControllerAnimated true  completion  nil                  See ViewController       ViewController swift  import UIKit  class ViewController  UIViewController  UIPopoverPresentationControllerDelegate       func showPopover base  UIView                if let viewController   self storyboard  instantiateViewControllerWithIdentifier  popover   as  PopOverViewController                    let navController   UINavigationController rootViewController  viewController              navController modalPresentationStyle    Popover              if let pctrl   navController popoverPresentationController                   pctrl delegate   self                  pctrl sourceView   base                 pctrl sourceRect   base bounds                  self presentViewController navController  animated  true  completion  nil                                        override func viewDidLoad            super viewDidLoad                  IBAction func onShow sender  UIButton                self showPopover sender                func adaptivePresentationStyleForPresentationController controller  UIPresentationController  - gt  UIModalPresentationStyle           return  None             Note  The func showPopover base  UIView  method should be placed before ViewDidLoad  Hope it helps

User · Answer

I found a complete example of how to get this all to work so that you can always display a popover no matter the device orientation https   github com frogcjn AdaptivePopover iOS8 Swift   The key is to implement UIAdaptivePresentationControllerDelegate  func adaptivePresentationStyleForPresentationController PC  UIPresentationController   - gt  UIModalPresentationStyle          This  forces  a popover to be displayed on the iPhone     return  None     Then extend the example above  from Imagine Digital    nav popoverPresentationController  delegate   implOfUIAPCDelegate

User · Answer

In iOS9 UIPopoverController is depreciated  So can use the below code for Objective-C version above iOS9 x   -  IBAction onclickPopover  id sender   UIStoryboard  sb    UIStoryboard storyboardWithName   Main  bundle  NSBundle mainBundle    UIViewController  viewController    sb instantiateViewControllerWithIdentifier   popover     viewController modalPresentationStyle   UIModalPresentationPopover  viewController popoverPresentationController sourceView   self popOverBtn  viewController popoverPresentationController sourceRect   self popOverBtn bounds  viewController popoverPresentationController permittedArrowDirections   UIPopoverArrowDirectionAny   self presentViewController viewController animated YES completion nil

User · Answer

Okay  A housemate took a look at it and figured it out    func addCategory          var popoverContent   self storyboard  instantiateViewControllerWithIdentifier  NewCategory   as UIViewController     var nav   UINavigationController rootViewController  popoverContent      nav modalPresentationStyle   UIModalPresentationStyle Popover     var popover   nav popoverPresentationController     popoverContent preferredContentSize   CGSizeMake 500 600      popover delegate   self     popover sourceView   self view     popover sourceRect   CGRectMake 100 100 0 0       self presentViewController nav  animated  true  completion  nil       That s the way    You don t talk to the popover itself anymore  you talk to the view controller inside of it to set the content size  by calling the property preferredContentSize

User · Answer

Actually it is much simpler than that  In the storyboard you should make the viewcontroller you want to use as popover and make a viewcontroller class for it as usual  Make a segue as shown below from the object you want to open the popover  in this case the UIBarButton named  Config      In the  mother viewcontroller  implement the UIPopoverPresentationControllerDelegate and the delegate method   func popoverPresentationControllerDidDismissPopover popoverPresentationController  UIPopoverPresentationController          do som stuff from the popover     Override the prepareForSeque method like this   override func prepare for segue  UIStoryboardSegue  sender  Any            segue for the popover configuration window     if segue identifier     yourSegueIdentifierForPopOver            if let controller   segue destinationViewController as  UIViewController               controller popoverPresentationController  delegate   self             controller preferredContentSize   CGSize width  320  height  186                      And you re done  And you can now treat the popover view as any other view  ie  add fields and what not  And you get hold of the the content controller by using the popoverPresentationController presentedViewController method in the UIPopoverPresentationController   Also on an iPhone you would have to overwrite   func adaptivePresentationStyle for controller  UIPresentationController  - gt  UIModalPresentationStyle            return UIModalPresentationStyle none

User · Answer

I made an Objective-C version of Imagine Digitals swift answer above  I don t think I missed anything as it seems to work under preliminary testing  if you spot something let me know  and I ll update it  - void  presentPopover       YourViewController  popoverContent     YourViewController alloc  init     this will be a subclass of UIViewController     UINavigationController  nav      UINavigationController alloc  initWithRootViewController popoverContent       nav modalPresentationStyle   UIModalPresentationPopover      UIPopoverPresentationController  popover   nav popoverPresentationController      popoverContent preferredContentSize   CGSizeMake 500 600       popover delegate   self      popover sourceRect   CGRectMake 100 100 0 0     I actually used popover barButtonItem   self myBarButton        self presentViewController nav animated YES completion nil

User · Answer

This is best explained on the iOS8 Day-by-Day blog  In short  once you ve set your UIViewController s modalPresentationStyle to  Popover  you can get hold of a UIPopoverPresentationClass  a new iOS8 class  via the controller s popoverPresentationController property

User · Answer

my two cents for xcode 9 1   swift 4   class ViewController  UIViewController  UIPopoverPresentationControllerDelegate        override func viewDidLoad            super viewDidLoad            let when   DispatchTime now     0 5          DispatchQueue main asyncAfter deadline  when  execute       - gt  Void in                to test after 05 secs                   self showPopover base  self view                   func showPopover base  UIView        if let viewController   self storyboard  instantiateViewController withIdentifier   popover   as  PopOverViewController            let navController   UINavigationController rootViewController  viewController          navController modalPresentationStyle    popover          if let pctrl   navController popoverPresentationController               pctrl delegate   self              pctrl sourceView   base             pctrl sourceRect   base bounds              self present navController  animated  true  completion  nil                       IBAction func onShow sender  UIButton       self showPopover base  sender     func adaptivePresentationStyle for controller  UIPresentationController  traitCollection  UITraitCollection  - gt  UIModalPresentationStyle      return  none     and experiment in   func adaptivePresentationStyle         return  popover   or          return  pageSheet     and so on

User · Answer

The following has a pretty comprehensive guide on how to configure and present popovers  https   www appcoda com presentation-controllers-tutorial   In summary  a viable implementation  with some updates from the original article syntax for Swift 4 2   to then be called from elsewhere  would be something like the following   func showPopover ofViewController popoverViewController  UIViewController  originView  UIView        popoverViewController modalPresentationStyle   UIModalPresentationStyle popover     if let popoverController   popoverViewController popoverPresentationController           popoverController delegate   self         popoverController sourceView   originView         popoverController sourceRect   originView bounds         popoverController permittedArrowDirections   UIPopoverArrowDirection any           self present popoverViewController  animated  true      A lot of this was already covered in the answer from  mmc  but the article helps to explain some of those code elements used  and also show how it could be expanded   It also provides a lot of additional detail about using delegation to handle the presentation style for iPhone vs  iPad  and to allow dismissal of the popover if it s ever shown full-screen  Again  updated for Swift 4 2   func adaptivePresentationStyle for  UIPresentationController  - gt  UIModalPresentationStyle         return UIModalPresentationStyle fullScreen     return UIModalPresentationStyle none    func adaptivePresentationStyle for controller  UIPresentationController  traitCollection  UITraitCollection  - gt  UIModalPresentationStyle       if traitCollection horizontalSizeClass     compact           return UIModalPresentationStyle none           return UIModalPresentationStyle fullScreen             return UIModalPresentationStyle fullScreen     return UIModalPresentationStyle none    func presentationController   controller  UIPresentationController  viewControllerForAdaptivePresentationStyle style  UIModalPresentationStyle  - gt  UIViewController        switch style       case  fullScreen          let navigationController   UINavigationController rootViewController  controller presentedViewController          let doneButton   UIBarButtonItem barButtonSystemItem  UIBarButtonItem SystemItem done  target  self  action   selector doneWithPopover           navigationController topViewController  navigationItem rightBarButtonItem   doneButton         return navigationController     default          return controller presentedViewController             As of Swift 4  functions used in selectors must be declared as  objc  objc private func doneWithPopover         self dismiss animated  true  completion  nil      Hope this helps

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