gistfile1.txt

// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad
{
    [super viewDidLoad];
    
    CALayer *myLayer = [[CALayer alloc] init];
    myLayer.position = CGPointMake(50, 50);
    myLayer.backgroundColor = [[UIColor greenColor] CGColor];
    myLayer.frame = CGRectMake(50, 50, 50, 50);
    
    [[self.view layer] addSublayer:myLayer];
    [myLayer release];
}