iOS Modal ViewController with transparent background

Question

I m trying to present a view controller modally  with a transparent background  My goal is to let both the presenting and presented view controllers s view to be displayed at the same time  The problem is  when the presenting animation finishes  the presenting view controller s view disappears   -  IBAction pushModalViewControllerButtonPressed  id sender       ModalViewController  modalVC     ModalViewController alloc  init        self presentViewController modalVC animated YES completion nil       I know I could just add the view as a subview  but I d like to avoid this solution for some reason  How could I fix it

User · Answer

Swift 4 2  guard let someVC   UIStoryboard name   Main   bundle  nil  instantiateViewController withIdentifier   someVC   as  someVC else       return   someVC modalPresentationStyle    overCurrentContext  present someVC  animated  true  completion  nil

User · Answer

I have created an object to handle the presentation of what I call a  superposed modal   meaning it retains the background s view and allows you to have a modal with a transparent background   It has a single  simple method that does this   -  void presentViewController  UIViewController   presentedViewController        fromViewController  UIViewController   presentingViewController       presentedViewController modalPresentationStyle   UIModalPresentationCustom      presentedViewController transitioningDelegate   self      presentedViewController modalPresentationCapturesStatusBarAppearance   YES        presentedViewController setNeedsStatusBarAppearanceUpdate         presentingViewController presentViewController presentedViewController                                        animated YES                                      completion nil       It s important to set the modalPresentationCapturesStatusBarAppearance property to YES and force the status bar appearance to update  if your presented view controller has a different preferredStatusBarStyle   This object should have a  property  assign  nonatommic  isPresenting  You want this object to comply to the UIViewControllerAnimatedTransitioning and UIViewControllerTransitioningDelegate protocols and implement the following methods   -  id animationControllerForPresentedController  UIViewController   presented                            presentingController  UIViewController   presenting                                sourceController  UIViewController   source       self isPresenting   YES       return self     -  id animationControllerForDismissedController  UIViewController   dismissed       self isPresenting   NO       return self      and   -  NSTimeInterval transitionDuration  id transitionContext       return 0 25     -  void animateTransition  id transitionContext       UIViewController  firstVC    transitionContext viewControllerForKey UITransitionContextFromViewControllerKey       UIViewController  secondVC    transitionContext viewControllerForKey UITransitionContextToViewControllerKey       UIView  containerView    transitionContext containerView       UIView  firstView   firstVC view      UIView  secondView   secondVC view       if  self isPresenting             containerView addSubview secondView           secondView frame    CGRect               containerView frame origin x              containerView frame origin y   containerView frame size height              containerView frame size                     firstView tintAdjustmentMode   UIViewTintAdjustmentModeDimmed           UIView animateWithDuration 0 25 animations                secondView frame   containerView frame            completion   BOOL finished                 transitionContext completeTransition YES                         else            UIView animateWithDuration 0 25 animations                firstView frame    CGRect                   containerView frame origin x                  containerView frame origin y   containerView frame size height                  containerView frame size                       completion   BOOL finished                 transitionContext completeTransition YES                         This does a slide-in-from-the-bottom animation mimicking the default modal animation  but you can make it whatever you want   The important thing is that the presenting view controller s view will remain in the back  letting you create a transparent effect   This solution works for iOS 7

User · Answer

Of course you should set UIModalPresentationCurrentContext  but the place to set clearColor is very important too  You can t set background in viewDidLoad function  set it before the view did load like in the root view controller or in the init function of the controller that going to present   actionController view backgroundColor    UIColor clearColor    self presentViewController actionController animated YES completion nil     or  -  instancetype init        self    super initWithNibName nil bundle nil        if self            self modalPresentationStyle   UIModalPresentationOverCurrentContext           self view setBackgroundColor  UIColor clearColor               return self

User · Answer

A very simple way of doing this  using Storyboards  for example  is   UIStoryboard  storyboard    UIStoryboard storyboardWithName   SomeStoryboard  bundle nil   UIViewController  vc    storyboard instantiateViewControllerWithIdentifier   SomeStoryboardViewController       the key for what you re looking to do  vc modalPresentationStyle   UIModalPresentationOverCurrentContext  vc view alpha   0 50f    self presentViewController vc animated YES completion           great success       This will present a UIViewController in a Storyboard modally  but with a translucent background

User · Answer

This following code only works on the iPad   self view backgroundColor    UIColor clearColor   self modalPresentationStyle   UIModalPresentationCurrentContext   self presentModalViewController modalVC animated YES     I would go with adding a sub view    Here is a very good discussion  Look at the comments specifically  Not only the answer   Modal View  If I were you I wouldn t do it  I would add a sub view and do it  It seems to give me a better control over things   EDIT    As mentioned by Paul Linsay  since iOS 8 all that s needed is UIModalPresentationOverFullScreen for the modalPresentationStyle of the ViewController being presented  This would also cover of navigationBar and tabBar buttons

User · Answer

PresentViewController with Transparent background - in iOS 8 and iOS 9  MYViewController  myVC    self storyboard   instantiateViewControllerWithIdentifier   MYViewController        myVC providesPresentationContextTransitionStyle   YES      myVC definesPresentationContext   YES       myVC setModalPresentationStyle UIModalPresentationOverCurrentContext        self navigationController presentViewController myVC animated YES completion nil     And in MYViewController set background color black and reduce opacity

User · Answer

This category worked for me  ios 7  8 and 9   H file   interface UIViewController  navigation  -  void  presentTransparentViewController  UIViewController   viewControllerToPresent animated  BOOL flag completion  void     void  completion   end   M file   implementation UIViewController  navigation  -  void presentTransparentViewController  UIViewController   viewControllerToPresent animated  BOOL flag completion  void     void  completion       if SYSTEM VERSION LESS THAN   8 0               self presentIOS7TransparentController viewControllerToPresent withCompletion completion         else          viewControllerToPresent modalPresentationStyle   UIModalPresentationOverCurrentContext            self presentViewController viewControllerToPresent animated YES completion completion           - void presentIOS7TransparentController  UIViewController   viewControllerToPresent withCompletion  void    void  completion       UIViewController  presentingVC   self      UIViewController  root   self      while  root parentViewController            root   root parentViewController            UIModalPresentationStyle orginalStyle   root modalPresentationStyle      root modalPresentationStyle   UIModalPresentationCurrentContext       presentingVC presentViewController viewControllerToPresent animated YES completion            root modalPresentationStyle   orginalStyle             end

User · Answer

Create a segue to present modally and set Presentation property of that segue to over current context it will work 100

User · Answer

This code works fine on iPhone under iOS6 and iOS7   presentedVC view backgroundColor   YOUR COLOR     can be with  alpha  presentingVC modalPresentationStyle   UIModalPresentationCurrentContext   presentingVC presentViewController presentedVC animated YES completion NULL     In this case you miss slide-on animation  To retain animation you still can use the following  non-elegant  extension    presentingVC presentViewController presentedVC animated YES completion         presentedVC dismissViewControllerAnimated NO completion            presentingVC modalPresentationStyle   UIModalPresentationCurrentContext           presentingVC presentViewController presentedVC animated NO completion NULL                 If our presentingV is located inside of UINavigationController or UITabbarController you need to operate with that controllers as presentingVC   Further  in iOS7 you can implement custom transition animation applying UIViewControllerTransitioningDelegate protocol  Of course  in this case you can get transparent background   interface ModalViewController   UIViewController  lt UIViewControllerTransitioningDelegate gt    First  before presenting you have to set modalPresentationStyle  modalViewController modalPresentationStyle   UIModalPresentationCustom    Then you have to implement two protocol methods  -  id lt UIViewControllerAnimatedTransitioning gt  animationControllerForPresentedController  UIViewController   presented presentingController  UIViewController   presenting sourceController  UIViewController   source       CustomAnimatedTransitioning  transitioning    CustomAnimatedTransitioning new       transitioning presenting   YES      return transitioning     -  id lt UIViewControllerAnimatedTransitioning gt  animationControllerForDismissedController  UIViewController   dismissed       CustomAnimatedTransitioning   transitioning    CustomAnimatedTransitioning new       transitioning presenting   NO      return transitioning      The last thing is to define your custom transition in CustomAnimatedTransitioning class   interface CustomAnimatedTransitioning   NSObject  lt UIViewControllerAnimatedTransitioning gt   property  nonatomic  BOOL presenting   end   implementation CurrentContextTransitionAnimator  -  NSTimeInterval transitionDuration  id  lt UIViewControllerContextTransitioning gt  transitionContext        return 0 25     -  void animateTransition  id  lt UIViewControllerContextTransitioning gt  transitionContext        UIViewController  fromViewController    transitionContext viewControllerForKey UITransitionContextFromViewControllerKey       UIViewController  toViewController    transitionContext viewControllerForKey UITransitionContextToViewControllerKey        if  self presenting               custom presenting animation           else              custom dismissing animation

User · Answer

I struggled a bit with the Interface Builder of XCode 7 to set the Presentation Style as  VenuGopalTewari suggested  In this version  there seems to be no Over Current Context or Over Full Screen presentation mode for the segue  Thus  to make it work  I set the mode to Default    with    Additionally I set the presentation mode of the modally presented view controller to Over Full Screen

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I added these three lines in the init method in the presented view controller  and works like a charm   self providesPresentationContextTransitionStyle   YES  self definesPresentationContext   YES   self setModalPresentationStyle UIModalPresentationOverCurrentContext     EDIT  working on iOS 9 3    self modalPresentationStyle   UIModalPresentationOverFullScreen    As per documentation      UIModalPresentationOverFullScreen   A view presentation style in which the presented view covers the screen  The views beneath the presented content are not removed from the view hierarchy when the presentation finishes  So if the presented view controller does not fill the screen with opaque content  the underlying content shows through    Available in iOS 8 0 and later

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In iOS 8 0 and above it can be done by setting the property modalPresentationStyle to UIModalPresentationOverCurrentContext    Set property   definesPresentationContext   YES to avoid presenting over presenting-viewController s navigation bar  self definesPresentationContext   YES    self is presenting view controller presentedController view backgroundColor    YOUR COLOR with alpha OR clearColor  presentedController modalPresentationStyle   UIModalPresentationOverCurrentContext    self presentViewController presentedController animated YES completion nil

User · Answer

If you are using modal segue  make sure to set it as this image  you can turn off animation if you want

User · Answer

For those trying to get this to work in iOS 8  the  Apple-approved  way to display a transparent modal view controller is by setting modalPresentationStyle on the presented controller to  UIModalPresentationOverCurrentContext   This can be done in code  or by setting the properties of the segue in the storyboard   From the UIViewController documentation      UIModalPresentationOverCurrentContext      A presentation style where the content is displayed over only the   parent view controller   s content  The views beneath the presented   content are not removed from the view hierarchy when the presentation   finishes  So if the presented view controller does not fill the screen   with opaque content  the underlying content shows through       When presenting a view controller in a popover  this presentation   style is supported only if the transition style is   UIModalTransitionStyleCoverVertical  Attempting to use a different   transition style triggers an exception  However  you may use other   transition styles  except the partial curl transition  if the parent   view controller is not in a popover       Available in iOS 8 0 and later    https   developer apple com documentation uikit uiviewcontroller  The  View Controller Advancements in iOS 8  video from WWDC 2014 goes into this in some detail   Note    Be sure to give your presented view controller a clear background color  lest it not actually be see-through  You have to set this before presenting ie setting this parameter in the viewDidLoad of the presentedViewController won t have any affect

User · Answer

It s a bit of hacky way  but for me this code works  iOS 6     AppDelegate  appDelegate    AppDelegate     UIApplication sharedApplication  delegate     self presentViewController self signInViewController animated YES completion         self signInViewController dismissViewControllerAnimated NO completion            appDelegate window rootViewController modalPresentationStyle   UIModalPresentationCurrentContext           self presentViewController self signInViewController animated NO completion nil           appDelegate window rootViewController modalPresentationStyle   UIModalPresentationFullScreen                 This code works also on iPhone

User · Answer

The Login screen is a modal  meaning that it sits on top of the previous screen  So far we have Blurred Background  but it   s not blurring anything  it   s just a grey background    We need to set our Modal properly   image link target   First  we need to change the View Controller   s View background to Clear color  It simply means that it should be transparent  By default  that View is white  Second  we need to select the Segue that leads to the Login screen  and in the Attribute Inspector  set the Presentation to Over Current Context  This option is only available with Auto Layout and Size Classes enabled    image link target

User · Answer

Set navigation s modalPresentationStyle to UIModalPresentationCustom  and set your presented view controller s background color as clear color

User · Answer

Working for iOS 7-10  if  available iOS 8 0           nextVC modalPresentationStyle    OverCurrentContext     self presentViewController nextVC  animated  true  completion  nil    else          Fallback on earlier version     self modalPresentationStyle    Custom               nextVC modalTransitionStyle    CrossDissolve                 self presentViewController nextVC  animated  false  completion  nil

User · Answer

A complete method tested on iOS 7 and iOS 8    interface UIViewController  MBOverCurrentContextModalPresenting        warning Some method of viewControllerToPresent will called twice before iOS 8  e g  viewWillAppear   -  void MBOverCurrentContextPresentViewController  UIViewController   viewControllerToPresent animated  BOOL flag completion  void     void  completion    end   implementation UIViewController  MBOverCurrentContextModalPresenting   -  void MBOverCurrentContextPresentViewController  UIViewController   viewControllerToPresent animated  BOOL flag completion  void     void  completion       UIViewController  presentingVC   self          iOS 8 before     if  floor NSFoundationVersionNumber   lt   NSFoundationVersionNumber iOS 7 1            UIViewController  root   presentingVC          while  root parentViewController                root   root parentViewController                      presentingVC presentViewController viewControllerToPresent animated YES completion                 viewControllerToPresent dismissViewControllerAnimated NO completion                    UIModalPresentationStyle orginalStyle   root modalPresentationStyle                  if  orginalStyle    UIModalPresentationCurrentContext                        root modalPresentationStyle   UIModalPresentationCurrentContext                                     presentingVC presentViewController viewControllerToPresent animated NO completion completion                   if  orginalStyle    UIModalPresentationCurrentContext                        root modalPresentationStyle   orginalStyle                                                        return             UIModalPresentationStyle orginalStyle   viewControllerToPresent modalPresentationStyle      if  orginalStyle    UIModalPresentationOverCurrentContext            viewControllerToPresent modalPresentationStyle   UIModalPresentationOverCurrentContext             presentingVC presentViewController viewControllerToPresent animated YES completion completion       if  orginalStyle    UIModalPresentationOverCurrentContext            viewControllerToPresent modalPresentationStyle   orginalStyle            end

User · Answer

in appdelegate    -  BOOL application  UIApplication   application didFinishLaunchingWithOptions  NSDictionary   launchOptions          window rootViewController setModalPresentationStyle UIModalPresentationCurrentContext       return YES      in you first view controller from where you have to load next view     NextViewController  customvc     NextViewController alloc init        self presentViewController customvc animated YES completion               in your nextViewController which is to be added transparent   -  void viewDidLoad        super viewDidLoad       self view backgroundColor    UIColor clearColor       UIView  backView     UIView alloc  initWithFrame self view frame       backView backgroundColor     UIColor blackColor  colorWithAlphaComponent 0 6        self view insertSubview backView atIndex 0

User · Answer

To recap all the good answers and comments here and to still have an animation while moving to your new ViewController this is what I did   Supports iOS 6 and up   If your using a UINavigationController   UITabBarController this is the way to go       SomeViewController  vcThatWillBeDisplayed    self storyboard instantiateViewControllerWithIdentifier   SomeVC         vcThatWillBeDisplayed view backgroundColor    UIColor colorWithRed  255 255 0 green 255 255 0 blue 255 255 0 alpha 0 50            self navigationController modalPresentationStyle   UIModalPresentationCurrentContext       self presentViewController presentedVC animated YES completion NULL     If you ll do that you will lose your modalTransitionStyle animation  In order to solve it you can easily add to your SomeViewController class this   - void viewDidAppear  BOOL animated        super viewDidAppear animated        UIView animateWithDuration 0 4 animations      self view alpha   1          completion   BOOL finished        -  void viewDidLoad        super viewDidLoad       self view alpha   0

User · Answer

If you re using Storyboard  you can follow this step         Add a view controller  V2   setup the UI the way you want it       add an UIView - set background to black and opacity to 0 5 add another UIView 2  - that will serve as your popup  Pls take note that the UIView and the UIView 2  must have the same level hierarchy  Dont make the imageview the child of the view otherwise the opacity of the uiview will affect the UIView 2           Present V2 Modally   Click the segue  In the Attributes inspector  Set Presentation as Over Full Screen  Remove animation if you like               Select V2  In the Attributes inspector  Set Presentation as Over Full Screen  Check Defines Context and Provides Context               Select the MainView of your V2  Pls  Check image   Set backgroundColor to Clear Color

User · Answer

The solution to this answer using swift would be as follows   let vc   MyViewController   vc view backgroundColor   UIColor clear    or whatever color  vc modalPresentationStyle    overCurrentContext present vc  animated  true  completion  nil

User · Answer

Alternate way is to use a  container view   Just make alpha below 1 and embed with seque  XCode 5  target iOS7  Tested on iPhone     Container view available from iOS6  Link to blog post about that

[ios] iOS: Modal ViewController with transparent background

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