A simple way to present a view controller with keeping the blurred previous one.

It uses UIBlurEffectStyle in iOS 8 SDK, so it is only compatibility with iOS 8 and later.

A demo is better than 100 words.

The easiest way to integrate VVBlurPresentation into your project would be using CocoaPods. Add the snippet to your Podfile under the correct target and run pod install.

pod 'VVBlurPresentation'

Clone the repo and add files under Source folder to your project.

Briefly, make your presented view controller as a subclass of VVBlurViewController, then present it as usual.

You can use it with both code and storyboard.

1. Create or change your presented view controller as a subclass of VVBlurViewController.

   //PresentedViewController.h
   #import "VVBlurViewController.h"
   @interface PresentedViewController : VVBlurViewController
   
   @end
   
   //PresentedViewController.m
   //...

2. Create an instance of PresentedViewController and present it from your presenting view controller.

   //PresentingViewController.m
   
   #import "PresentedViewController.h"
   
   - (void)present {
       PresentedViewController *pvc = [PresentedViewController new];
       [self presentViewController:pvc animated:YES completion:nil];
   }

If you are using storyboard, change the class of your view controller to the subclass of VVBlurViewController (PresentedViewController here). Then use a "Present Modally" segue to present the new view controller.

All three blur styles (UIBlurEffectStyleExtraLight, UIBlurEffectStyleLight and UIBlurEffectStyleDark) are supported. You can set the blurStyle property of presented view controller to change the style. The default is dark.

VVBlurPresentation is released under MIT license.