18 Questions
What are some features of CALayer that are not exposed by UIView?
3D transforms and positioning
How can you apply a drop shadow to a view in iOS?
By utilizing CALayer's features
What is one way to achieve nonrectangular bounds for a visual element?
Applying a mask to the content
Why would you choose to work with CALayer over UIView for certain effects?
CALayer provides better performance for complex animations
What benefit does CALayer offer in terms of animations compared to UIView?
CALayer allows for non-linear animations
How can you create a colored border around a view in an iOS app?
By using CALayer's features to customize the border
What is responsible for managing rendering, layout, and animation in iOS?
CALayer
Which iOS class is conceptually very similar to UIView in handling rectangular objects arranged hierarchically?
CALayer
What feature of UIView is not handled by CALayer when it comes to user interaction?
User interaction
Which mechanism in iOS propagates touch events through the view hierarchy but is not handled by CALayer?
Responder chain
In terms of managing layers and sublayers, which component is aware of parallel hierarchies in iOS?
UIView
Which element in iOS has methods and properties for animations, transforms, and position management similar to UIView?
CALayer
In Mac OS 10.8, what is a benefit of using a layer-backed view instead of a hosted CALayer?
Access to both low-level CALayer and high-level UIView features
Why might you still want to use a hosted CALayer instead of a layer-backed UIView in a real-world application?
To make cross-platform code compatible with Mac
When might you choose to use a hosted CALayer instead of a layer-backed UIView according to the text?
When developing specialized CALayer subclasses
What makes layer-backed views easier to work with compared to hosted layers?
Integration of high-level UIView APIs
What kind of work might justify the use of a hosted CALayer for performance reasons according to the text?
Complex graphics operations
When is it recommended to use OpenGL for drawing, based on the text?
When doing performance-critical work that involves drawing
Learn about the advanced features of CALayer that are not exposed by UIView. Topics covered include drop shadows, rounded corners, 3D transforms, nonrectangular bounds, alpha masking, and complex animations.
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