SwiftUI SwiftUI Navigation 2

Question 1

How do you present a modal sheet in SwiftUI?

Accepted Answer

.sheet(isPresented:content:)

Answer

The `.sheet(isPresented:content:)` modifier presents a modal sheet when the binding's value becomes true.

Question 2

What is the difference between `.sheet` and `.fullScreenCover` in SwiftUI?

Accepted Answer

.fullScreenCover covers the entire screen including the status bar

Answer

`.fullScreenCover` presents a modal that fills the entire screen, while `.sheet` shows a card that can be dismissed by dragging.

Question 3

How can a presented sheet dismiss itself in SwiftUI?

Accepted Answer

Both B and C work

Answer

You can dismiss by using `@Environment(\.dismiss)` to call `dismiss()`, or by toggling the `isPresented` binding to `false`.

Question 4

Which SwiftUI modifier presents an alert?

Accepted Answer

Both work (different iOS versions)

Answer

Both the older `.alert(isPresented:content:)` and the newer `.alert(_:isPresented:actions:)` modifier signatures work depending on the iOS deployment target.

Question 5

What view implements a tab bar in SwiftUI?

Accepted Answer

TabView

Answer

`TabView` renders a tab bar at the bottom and switches between child views based on the selected tab.

SwiftUI Practice Test

SwiftUI Practice Test

SwiftUI SwiftUI Navigation 2