Tells the layer to update its layout.
- iOS 2.0+
- macOS 10.5+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
Subclasses can override this method and use it to implement their own layout algorithm. Your implementation must set the frame of each sublayer managed by the receiver.
The default implementation of this method calls the layoutSublayersOfLayer: method of the layer’s delegate object. If there is no delegate object, or the delegate does not implement that method, this method calls the
layoutSublayersOfLayer: method of the object in the
Managing Layer Resizing and Layout
The object responsible for laying out the layer’s sublayers.
Invalidates the layer’s layout and marks it as needing an update.
Returns a Boolean indicating whether the layer has been marked as needing a layout update.
A bitmask defining how the layer is resized when the bounds of its superlayer changes.
Returns the preferred size of the layer in the coordinate space of its superlayer.
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