iOS Core Animation: CALayer bringSublayerToFront?

Question

How do I bring a CALayer sublayer to the front of all sublayers, analogous to -[UIView bringSubviewToFront]?

Answer 1

This is variation of @MattDiPasquale's implementation which reflects UIView's logic more precisely:

- (void) bringSublayerToFront:(CALayer *)layer
{
    [layer removeFromSuperlayer];
    [self insertSublayer:layer atIndex:[self.sublayers count]];
}

- (void) sendSublayerToBack:(CALayer *)layer
{
    [layer removeFromSuperlayer];
    [self insertSublayer:layer atIndex:0];
}

Note: if you don't use ARC, you may wish to add [layer retain] at top and [layer release] at bottom of both functions to make sure layer is not accidentally destructed in a case it has retain count = 1.