Question 1

How do I use MotionBlur with Swift in my iOS project?

Accepted Answer

Since MotionBlur is written in Objective-C, you need to add a bridging header to import 'UIView+MotionBlur.h'. Then, call the methods from Swift by adapting the Objective-C syntax, such as using completion handlers for async operations.

Question 2

MotionBlur vs UIVisualEffectView: which is better for motion blur in animations?

Accepted Answer

MotionBlur is specifically designed for dynamic motion blur during position animations, while UIVisualEffectView is for static blurs or background effects. Use MotionBlur for animated transitions and UIVisualEffectView for stationary blur effects.

Question 3

Can I customize the blur intensity or angle in MotionBlur?

Accepted Answer

Yes, you can set the blur angle when enabling the effect, as shown in the enableBlurWithAngle:completion: method. However, intensity is fixed based on the snapshot, and it cannot be adjusted dynamically during animation.

Question 4

Does MotionBlur work with Auto Layout or constraint-based animations?

Accepted Answer

It works with frame-based animations, so for Auto Layout, you need to update constraints and call layoutIfNeeded within the animation block. The snapshotting might not reflect constraint changes if not handled properly.

Question 5

Is MotionBlur compatible with UIKit dynamics or other animation frameworks?

Accepted Answer

It's designed for standard UIView animations, so integration with UIKit dynamics or third-party frameworks might require additional wrapping or adjustments, as it relies on pre-computed snapshots before animation starts.

Question 6

How to handle multiple animated views with MotionBlur without performance issues?

Accepted Answer

Use it sparingly on key views, as snapshotting multiple complex views simultaneously can cause performance overhead. Optimize by enabling blur only when necessary and testing on target devices.

MotionBlur

What is MotionBlur?

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