iOS Draw Rectagle with curved ends

Question

Imagine a long rectangle (maybe with size 200x20). All sides have straight edges. In my iOS app, this is easy for me to draw:

CGContextFillRect(context, CGRe         


        

Answer 1

You may find Jeff LaMarche's RoundedRectView class useful, whether to use instances of directly or even to see how he makes them:

http://iphonedevelopment.blogspot.com/2008/11/creating-transparent-uiviews-rounded.html

Answer 2

Something like this (untested, so beware of bugs!):

- (void)drawRect:(CGRect)rect {
 CGContextRef context = UIGraphicsGetCurrentContext();
 CGContextSetStrokeColorWithColor(context, [[UIColor blackColor] CGColor]);
 CGContextSetRGBFillColor(context, 0.0, 0.0, 1.0, 1.0);

 CGRect rrect = CGRectMake(CGRectGetMinX(rect), CGRectGetMinY(rect), CGRectGetWidth(rect)-30, CGRectGetHeight(rect)-30);
 CGFloat radius = 0.5f;

 CGFloat minx = CGRectGetMinX(rrect), midx = CGRectGetMidX(rrect), maxx = CGRectGetMaxX(rrect);
 CGFloat miny = CGRectGetMinY(rrect), midy = CGRectGetMidY(rrect), maxy = CGRectGetMaxY(rrect);

 CGContextMoveToPoint(context, minx, midy);
 CGContextAddArcToPoint(context, minx, miny, midx, miny, radius);
 CGContextAddArcToPoint(context, maxx, miny, maxx, midy, radius);
 CGContextAddArcToPoint(context, maxx, maxy, midx, maxy, radius);
 CGContextAddArcToPoint(context, minx, maxy, minx, midy, radius);
 CGContextClosePath(context);
 CGContextDrawPath(context, kCGPathFillStroke);
}