Multiple drawLayer:

how can i use drawLayer for multiple layers in one class? I was thinking maybe something like this:

- (void)drawLayer:(CALayer *)layer inContext:(CGContextRef)context {
    if(layer == layer1) {
        //do this
    }

    if(layer == layer2) {
        //do someth开发者_JAVA百科ing else
    }
}

how would i do that?