remove all subLayers from a view

The sublayers property of a CALayer object returns a copy of the array. Setting it no nil does nothing about the sublayers. This however will do:

for (CALayer *layer in self.view.layer.sublayers) {
    [layer removeFromSuperlayer];
}

Or, in Swift

self.view.layer.sublayers?.forEach { $0.removeFromSuperlayer() }

Swift 3.0 & Swift 4.0

Set the sublayers property to nil to remove all sublayers from a view.

view.layer.sublayers = nil

also you can add

.removeAll()

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