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How to draw a shadow around a view

Paul Hudson    @twostraws   

Updated for Xcode 13.0

SwiftUI gives us a dedicated shadow() modifier to draw shadows around views. You can control the color, radius, and position of the shadow, and you can also control which parts of the view get shadowed by adjusting your modifier order.

In its basic form, you can add a shadow just by specifying the radius of the blur, like this:

Text("Hacking with Swift")

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    .foregroundColor(.black)
    .padding()
    .shadow(radius: 5)
    .border(Color.red, width: 4)
    .background(Color.white)

The text “Hacking with Swift” in black on a white rectangle with a thick red border. The text has a hazy gray shadow behind it.

That adds a very slight shadow with a 5-point blur centered on the text.

You can also specify which color you want along with the X and Y offset from the original view. For example, this creates a strong red shadow with a 5-point blur, centered on the text:

Text("Hacking with Swift")

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    .padding()
    .shadow(color: .red, radius: 5)
    .border(Color.red, width: 4)

The text “Hacking with Swift” with a hazy red shadow behind it.

If you want to specify offsets for the shadow, add x and/or y parameters to the modifier, like this:

Text("Hacking with Swift")

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    .padding()
    .shadow(color: .red, radius: 5, x: 20, y: 20)
    .border(Color.red, width: 4)

The text “Hacking with Swift” centered in a red rectangular outline. Along the rectangle's bottom edge is a hazy red cloud.

Remember, SwiftUI applies modifiers in the order you list them, so if you want you can have your shadow apply to the border as well just by putting the border modifier before the shadow modifier:

Text("Hacking with Swift")

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    .padding()
    .border(Color.red, width: 4)
    .shadow(color: .red, radius: 5, x: 20, y: 20)

The text “Hacking with Swift” centered in a red rectangular outline. Behind and to the bottom right is a blurry shadow of the text and outline.

Tip: If you find your shadow effect isn’t strong enough, add another shadow() modifier – you can stack them up to create more complex shadow effects.

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