undo redo issues with CGLayer

Question

I am working with unod redo operations on CgLayer, I have tried some code, but not able to get it working, dont know , where I am getting wrong, below is my code, which i ha

Answer 1

- (void)redrawLine
{
    NSDictionary *lineInfo = [m_pathArray lastObject];
    NSValue *val = [lineInfo valueForKey:@"IMAGE"];
    CGContextRef context1 = (CGContextRef) [val pointerValue];
    CGContextDrawLayerAtPoint(context1, CGPointMake(00, 00),layerToShow);
    [self setNeedsDisplayInRect:self.bounds];
}

just update this method with ur code