SwiftUI SwiftUI Drawing and Graphics

Question 1

Which protocol do you implement to create a custom SwiftUI shape?

Accepted Answer

Shape

Answer

Conforming to the `Shape` protocol and implementing `path(in:)` lets you create fully custom drawable shapes.

Question 2

What type is used to construct a custom drawing path in SwiftUI's Shape protocol?

Accepted Answer

Path

Answer

SwiftUI uses its own `Path` type (wrapping CGPath) in the `path(in rect: CGRect)` method required by the `Shape` protocol.

Question 3

Which modifier fills a SwiftUI Shape with a color?

Accepted Answer

Both B and C work on Shape

Answer

Both `.fill()` (which applies a fill directly) and `.foregroundColor()` (which sets the shape's rendering color) can color a SwiftUI Shape.

Question 4

How do you draw only the outline of a SwiftUI Shape?

Accepted Answer

.stroke()

Answer

`.stroke()` renders only the outline of a shape with a configurable line width and style.

Question 5

Which SwiftUI type provides a canvas for immediate-mode drawing similar to Core Graphics?

Accepted Answer

Canvas

Answer

`Canvas` (iOS 15+) accepts a closure receiving a `GraphicsContext` and `CGSize`, enabling 2D immediate-mode drawing.

SwiftUI Practice Test