SwiftUI SwiftUI Views and Layout 3

Question 1

How do you make a SwiftUI image resize to fill its frame?

Accepted Answer

.resizable().scaledToFill()

Answer

You must call `.resizable()` first, then `.scaledToFill()` or `.scaledToFit()` to control how it fills the frame.

Question 2

Which modifier rounds the corners of a SwiftUI view?

Accepted Answer

Both A and B work

Answer

Both `.cornerRadius()` and `.clipShape(RoundedRectangle(cornerRadius:))` produce rounded corners.

Question 3

What is the purpose of `ViewBuilder` in SwiftUI?

Accepted Answer

It allows closures to return multiple views as a single view

Answer

`@ViewBuilder` is a result builder that lets a closure return multiple child views combined into a single view.

Question 4

How do you conditionally show a view in SwiftUI?

Accepted Answer

if condition { view }

Answer

You use a standard Swift `if` statement inside a `@ViewBuilder` body to conditionally include views.

Question 5

What does the `.overlay()` modifier do in SwiftUI?

Accepted Answer

Draws another view on top of the modified view

Answer

`.overlay()` places an additional view layered on top of the modified view, aligned to it.

SwiftUI Practice Test