Here’s an open source component providing a custom UIStoryBoardSegue that allows you to easily set up modal views with a blurred background called AFBlurSegue from Alvaro Franco.
AFBlurSegue allows you to customize the background color, and the blurring effect, and since it’s a UIStoryBoardSegue can be presented with the different UIModalTransition’s.
Here’s an animation from the readme showing AFBlurSegue views presented using different transitions.
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