[Solved] What will be the visible effect when this SwiftUI code runs? withAnimation { self.isExpanded.toggle() } Assuming isExpanded controls the height of a view. | iOS Swift

iOS Swift - Animations

What will be the visible effect when this SwiftUI code runs?

withAnimation {
  self.isExpanded.toggle()
}

Assuming isExpanded controls the height of a view.

AThe view's height changes instantly without animation.

BThe view's height changes smoothly with animation.

CThe view does not change height at all.

DThe app crashes due to missing animation parameters.

Step-by-Step Solution

Solution:

Step 1: Understand withAnimation effect on state change
Using withAnimation around a toggle animates the resulting view changes smoothly.
Step 2: Relate isExpanded to view height
Since isExpanded controls height, toggling it inside withAnimation animates the height change.
Final Answer:
The view's height changes smoothly with animation. -> Option B
Quick Check:
withAnimation toggles state with smooth UI change [OK]

Quick Trick: State changes inside withAnimation animate UI updates [OK]

Common Mistakes:

Master "Animations" in iOS Swift

9 interactive learning modes - each teaches the same concept differently

More iOS Swift Quizzes

What will be the visible effect when this SwiftUI code runs?