SwiftUI SwiftUI Drawing and Graphics 2

Question 1

How do you apply a linear gradient as a fill in SwiftUI?

Accepted Answer

Both A and C work

Answer

You can apply a LinearGradient via `.fill()` on a Shape or via `.background()` on any view.

Question 2

What is `TimelineView` used for in SwiftUI?

Accepted Answer

Updating a view on a schedule using a timeline schedule

Answer

`TimelineView` updates its content on a given schedule (e.g., every second), enabling clock, animation, or live data displays.

Question 3

Which SwiftUI modifier applies a visual effect blur to a view?

Accepted Answer

.blur(radius:)

Answer

`.blur(radius:)` applies a Gaussian blur effect to the view's rendered output.

Question 4

What is the purpose of the `symbolVariants` environment value in SwiftUI?

Accepted Answer

Automatically applies a variant (fill, slash, circle) to all SF Symbols in a view hierarchy

Answer

Setting `.symbolVariants()` in the environment propagates a visual variant like `.fill` or `.circle` to all SF Symbols in the hierarchy.

Question 5

How do you render an SF Symbol in SwiftUI?

Accepted Answer

Image(systemName: "star")

Answer

`Image(systemName:)` loads and renders an SF Symbol by its system name.

SwiftUI Practice Test