I have a UIButton which is very similar to the standard iOS keyboard alphabet button. I am not sure how to create a shadow only for the bottom layer like how iOS have done. I use the below code, but I see a shadow on all the side, not just the bottom: CALayer *buttonLayer = [[CALayer alloc] init]; buttonLayer.shadowColor = [UIColor grayColor].CGColor; buttonLayer.shadowOffset = CGSizeMake(0.f,1.f)
![UIButton bottom shadow](https://cdn-ak-scissors.b.st-hatena.com/image/square/98d6f053a97a87156775f60757c60865d0f2c47d/height=288;version=1;width=512/https%3A%2F%2Fcdn.sstatic.net%2FSites%2Fstackoverflow%2FImg%2Fapple-touch-icon%402.png%3Fv%3D73d79a89bded)