Gerry is right about this.
Apple doesn't provide their own blur script to the developers, readily.
I'm not saying that it's not doable with Xcode; just it's not easy one-liner.
Try a search through StackOverFlow; there are a lot of guys discussing how to accomplish this.
There are a couple of plugins for Xcode, though, FXBlurView is one of them.
But neither of them is good for animating backgrounds.
That is; if the background is still, they do a good job;
but if there is a video or moving things in the background, that blur plug-ins' performances drop down significantly.
I'm not sure if it can be done in LiveCode; performance is the key, here.
Using a blurred background for the entire screen {see the attached image} is not that hard, I think.
Calling a blur script from the preOpenCard would do and with use of ImageMagick it may not delay the card's opening time.
But a sliding down-to-top blur view, like the "Control Center"?
Constantly taking snapshots of the screen, and blurring that portion in milliseconds as the blur view slides up with the finger's movement!
Do it with LiveCode and I'll pay for that; many of us would pay for that
~ Ender Nafi
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