How to apply a CoreImage filter to a view?

Question

Is there a simple way to apply a CoreImage filter to the content of a view? For example make a view look blurry?

I believe you can render your views calayer and then apply the filter to that image. — Simon, May 27 '12 at 16:40
As a note, there are currently no blur filters in Core Image on iOS: http://stackoverflow.com/questions/8528726/does-ios-5-support-blur-coreimage-fiters — Brad Larson, May 27 '12 at 22:21

score 1 · Accepted Answer · edited May 23 '17 at 10:09

you can convert the UIView to UIImage and then apply CoreImage filters on it..

you can use the following code to convert it..

+ (UIImage *) imageWithView:(UIView *)view
{
    UIGraphicsBeginImageContextWithOptions(view.bounds.size, view.opaque, 0.0);
    [view.layer renderInContext:UIGraphicsGetCurrentContext()];

    UIImage * img = UIGraphicsGetImageFromCurrentImageContext();

    UIGraphicsEndImageContext();

    return img;
}

Source

How to apply a CoreImage filter to a view?

1 Answers1