Removing all CALayer's sublayers

Question

I have trouble with deleting all of layer\'s sublayers. I currently do this manually, but that brings unnecessary clutter. I found many topics about this in google, but no a

Answer 1

Calling rootLayer.sublayers = nil; can cause a crash (e.g. if, under iOS 8, you call removeFromSuperview twice on the view owning rootLayer).

The right way should be:

[[rootLayer.sublayers copy] makeObjectsPerformSelector:@selector(removeFromSuperlayer)]

The call to copy is needed so that the array on which removeFromSuperlayer is iteratively called is not modified, otherwise an exception is raised.