Round two corners in UIView

http://stackoverflow.com/questions/4847163/round-two-corners-in-uiview

A little while ago I posted a question about rounding just two corners of a view, and got a great response, but am having problems implementing it. Here is my drawRect: method:

- (void)drawRect:(CGRect)rect { //[super drawRect:rect]; <------Should I uncomment this? int radius = 5; CGContextRef context = UIGraphicsGetCurrentContext(); CGContextBeginPath(context); CGContextAddArc(context, rect.origin.x + radius, rect.origin.y + rect.size.height - radius, radius, M_PI, M_PI / 2, 1); CGContextAddArc(context, rect.origin.x + rect.size.width - radius, rect.origin.y + rect.size.height - radius, radius, M_PI / 2, 0.0f, 1); CGContextClosePath(context); CGContextClip(context); }

The method is being called, but doesn't seem to affect the outcome of the view. Any ideas why?

- (void)viewDidLoad { // set the radius CGFloat radius = 50.0; // set the mask frame, and increase the height by the  // corner radius to hide bottom corners CGRect maskFrame = self.view.bounds; maskFrame.size.height += radius; // create the mask layer CALayer *maskLayer = [CALayer layer]; maskLayer.cornerRadius = radius; maskLayer.backgroundColor = [UIColor blackColor].CGColor; maskLayer.frame = maskFrame; // set the mask self.view.layer.mask = maskLayer; // Add a backaground color just to check if it works self.view.backgroundColor = [UIColor redColor]; // Add a test view to verify the correct mask clipping UIView *testView = [[UIView alloc] initWithFrame:CGRectMake( 0.0, 0.0, 50.0, 50.0 )]; testView.backgroundColor = [UIColor blueColor]; [self.view addSubview:testView]; [testView release]; [super viewDidLoad]; }