remove all subLayers from a view

Beppino66 picture Beppino66 · May 28, 2012 · Viewed 57.7k times · Source

In an animation I added a lot of sublayers to a view, with:

[self.view.layer addSublayer:layer1];
[self.view.layer addSublayer:layer2];

....

I would like to remove all sublayers with an action. I already tried with this suggestion of a similar question:

rootLayer.sublayers = nil;

but it doesn't work...

Could you help me? Than you!

Answer

Svein Halvor Halvorsen picture Svein Halvor Halvorsen · May 28, 2012

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() }