How to create a CALayer instance by the layer of a UIView instance

Question

I mean, I need a copy of the layer of the current UIView instanse, code as follow:
UIView *aaaView = [[AAAView alloc] initWithFrame:CGRectMake(0.0, 0.0, 320.0, 480.0)];
CALayer *aaaViewLayer = [[CALayer alloc] initWithLayer:aaaView.layer];
[self.view.layer addSublayer:aaa];
but it shows nothing. I also try like this.
CALayer *aaaViewLayer = [CALayer layer];
aaaViewLayer.contents = aaaView.layer.contents;
aaaViewLayer.frame = aaaView.layer.frame;
but it still does not work. why? Is there a way?

Answer 1

Dont give him blind response
OP
What do you want?
New database or new instance?
new instance---Are you setting up RAC?