Custom animation timing in iOS Swift - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is custom animation timing in iOS development?

Custom animation timing lets you control how fast or slow an animation runs at different points, instead of moving at a steady speed.

beginner

Which class in Swift lets you create custom timing curves for animations?

The <code>CAMediaTimingFunction</code> class lets you define custom timing curves using control points.

intermediate

What does the controlPoints parameter in CAMediaTimingFunction(controlPoints:_:_:_:) represent?

It represents four floating-point values that define the shape of the cubic Bézier curve controlling animation speed.

intermediate

How does a UIViewPropertyAnimator help with custom animation timing?

It allows you to create animations with custom timing curves and control their progress interactively.

beginner

Why use custom animation timing instead of default easing?

Custom timing makes animations feel more natural or match your app’s style by speeding up or slowing down parts of the animation.

Which class is used to define a custom timing curve for Core Animation?

A CATransaction

B UIViewAnimationOptions

C CAMediaTimingFunction

D UISpringTimingParameters

CAMediaTimingFunction defines custom timing curves using control points.

What shape does the custom timing curve in CAMediaTimingFunction represent?

A Cubic Bézier curve

B Circle

C Linear line

D Parabola

The timing curve is a cubic Bézier curve defined by four control points.

Which Swift class allows interactive control of animation progress with custom timing?

A UIViewPropertyAnimator

B CABasicAnimation

C UIViewAnimationOptions

D CAKeyframeAnimation

UIViewPropertyAnimator supports custom timing and interactive animation control.

What does a timing curve control in an animation?

A The color of the animation

B The speed of the animation over time

C The size of the animated view

D The animation delay

Timing curves control how fast or slow the animation runs at different points.

Which method creates a CAMediaTimingFunction with custom control points?

A CAMediaTimingFunction.init()

B CAMediaTimingFunction(name:)

C CAMediaTimingFunction.default()

D CAMediaTimingFunction(controlPoints:_:_:_:)

The initializer with controlPoints lets you specify custom cubic Bézier control points.

Explain how you would create a custom animation timing curve in Swift using CAMediaTimingFunction.

Think about how control points shape the animation speed.

Describe the benefits of using UIViewPropertyAnimator for animations with custom timing.

Consider how user interaction might affect animation.