Multi-colored Shadow Swift

Question

In the iOS music app, I've noticed the shadow underneath album artwork changes based on the color of the artwork. This shadow can also be multi-colored based on how the color at the edge of the artwork changes.

Does anyone know how to recreate this effect programmatically?

Answer 1

Thanks to @Josh Homann for pointing me in the right direction, but the answer was actually much more complex.

1. The first (bottom) UIView in the hierarchy should have a plain white background and be pinned to the edges of the screen.

2. The next view should be a UIImageView with an alpha of 0.75.

3. Then you should add a UIVisualEffectView with the same dimensions as the first view.

4. Finally, add another UIImageView that is the same size as the first UIImageView.

Your IB hierarchy should look similar to this:

The final result is this: