SwiftUI SwiftUI Gestures and Interactions

Question 1

Which SwiftUI modifier is used to add a tap gesture to a view?

Accepted Answer

.onTapGesture { }

Answer

.onTapGesture { } is the SwiftUI modifier that attaches a tap gesture action to a view.

Question 2

How do you detect a double-tap gesture in SwiftUI?

Accepted Answer

.onTapGesture(count: 2) { }

Answer

.onTapGesture(count: 2) specifies the number of taps required before the action fires.

Question 3

Which struct represents a drag gesture in SwiftUI?

Accepted Answer

DragGesture

Answer

DragGesture is the SwiftUI struct that recognizes dragging motion and provides translation and location values.

Question 4

What property of DragGesture.Value provides the offset from the start of the drag?

Accepted Answer

translation

Answer

The translation property of DragGesture.Value is a CGSize representing the total movement from the drag start.

Question 5

Which modifier combines a gesture with a view while letting the gesture coexist with other gestures?

Accepted Answer

.simultaneousGesture()

Answer

.simultaneousGesture() allows multiple gestures to be recognized at the same time rather than giving priority to one.

SwiftUI Practice Test