UIBezierPath

UIBezierPath is a convenient object for creating rounded-rectangular shapes.

Example

-(void)drawRect:(CGRect)rect {
  UIBezierPath* roundedRect = [UIBezierPath roundedRectBezierPath:CGRectInset(rect, 5, 5)
                                               withRoundedCorners:UIBezierPathRoundedTopLeftCorner|UIBezierPathRoundedTopRightCorner|UIBezierPathRoundedBottomLeftCorner|UIBezierPathRoundedBottomRightCorner
                                                 withCornerRadius:5];
  [[UIColor blackColor] setFill];
  [roundedRect fill];
}

Reference

• Header: http://github.com/kennytm/iphone-private-frameworks/blob/master/UIKit/UIBezierPath.h
• How the different paths look like: http://xa1.xanga.com/70ff567527733256065727/w203670103.png