Question

I would like to quickly animate a blur on a UIView to use as a transition in my app. I’m having trouble knowing where to start. I believe core image is the proper tool for the job. Can anyone point me to a sample of how to blur a UIView? I’m assuming I will need to convert the view into a single UIImage, but I don’t know where to proceed from there.

Thanks in advance!

Answer 1

rasterizeScale of a uiview’s layer is what you need, Here is the code for adding blur effect to UIVIew:

CALayer *layer = [self.blurView layer];
[layer setRasterizationScale:0.3];
[layer setShouldRasterize:YES];

For details refer to Apple Documentation of CALayer, Also this tutorial might help You, hope that helps