views:

215

answers:

1

I am not very sure, but I would bet on layer-backed views. That is:

Layer-backed views use Core Animation layers as their backing store,freeing the views from the responsibility of refreshing the screen. The views need to redraw only when the view content actually changes.

Or is it the other method of integration?

+2  A: 

All iPhone views are layer-backed.

Nick Veys
This is the default, but you can make UIViews host a custom CALayer subclass by overriding the +layerClass class method. An example of this would be OpenGL-displaying views that use CAEAGLLayer as their hosted layer.
Brad Larson