[Solved] What will be the visible effect when running this Swift code snippet? let transition = CATransition() transition.... What will be the visible effect when running this Swift code snippet? | iOS Swift

iOS Swift - Animations

What will be the visible effect when running this Swift code snippet?

let transition = CATransition()
transition.type = "push"
transition.subtype = "fromRight"
view.layer.add(transition, forKey: "transition")
view.backgroundColor = .red

AThe view background color changes instantly with no animation

BThe view background color changes with a push animation from the right

CThe view background color fades in smoothly

DThe app crashes due to invalid transition subtype

Step-by-Step Solution

Solution:

Step 1: Analyze transition type and subtype
The transition type is "push" and subtype is "fromRight", meaning the new content will push in from the right side.
Step 2: Understand effect on view background color
Adding the transition to the layer and then changing backgroundColor triggers the push animation showing the color change.
Final Answer:
The view background color changes with a push animation from the right -> Option B
Quick Check:
Push + fromRight = push animation from right [OK]

Quick Trick: Push + fromRight means slide in from right [OK]

Common Mistakes:

Expecting fade instead of push animation
Thinking background changes instantly without animation
Assuming invalid subtype causes crash

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More iOS Swift Quizzes

What will be the visible effect when running this Swift code snippet?

Step 1: Analyze transition type and subtype

Step 2: Understand effect on view background color

Final Answer:

Quick Check:

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