Dev:UIBackdropView

_UIBackdropView is a private class in UIKit.framework (iOS 7.0+), a subclass of UIView, which is used for the popular blur effects.

It uses a CABackdropLayer with a gaussianBlur CAFilter.

_UIBackdropView uses the settings for its setup. (superclass _UIBackdropViewSettings) Here's all settings class available in iOS 7

There are many ways to create the settings object

Blur Quality
There are only two qualities available.


 * low
 * default (Assumed to be "medium")

You can set it like this:

Applying blur settings
You can config the settings parameter then apply and update the blur view.