[Solved] Given this code snippet, what is the visible effect? let transition = CATransition() transition.type = .moveIn transition.subtype = .... Given this code snippet, what is the visible effect? | iOS Swift

iOS Swift - Animations

Given this code snippet, what is the visible effect?

let transition = CATransition()
transition.type = .moveIn
transition.subtype = .fromTop
transition.duration = 1.0
view.layer.add(transition, forKey: kCATransition)
view.alpha = 0.5

AThe view fades to half transparency without movement

BThe view slides out to the top

CThe view moves in from the top while changing transparency

DNo visible change occurs

Step-by-Step Solution

Solution:

Step 1: Understand transition type and subtype
Type is moveIn, subtype fromTop, so new content moves in from top.
Step 2: Recognize alpha change triggers animation
Changing alpha triggers the transition, so view moves in from top while becoming half transparent.
Final Answer:
The view moves in from the top while changing transparency -> Option C
Quick Check:
moveIn + fromTop = move in from top [OK]

Quick Trick: moveIn slides new content over old from direction [OK]

Common Mistakes:

Ignoring alpha change effect
Confusing moveIn with slide out
Expecting no animation

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More iOS Swift Quizzes

Given this code snippet, what is the visible effect?

Step 1: Understand transition type and subtype

Step 2: Recognize alpha change triggers animation

Final Answer:

Quick Check:

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