- (void)drawRect:(CGRect)rect {
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextMoveToPoint(context, 0, 0);
CGContextAddRect(context,CGRectMake(100, 100, 200 , 150));
CGContextMoveToPoint(context, 200, 175);
CGContextAddArc(context, 200, 175, 50,-3.14/2.0,3.14/2.0, 0);
CGContextAddLineToPoint(context, 200 , 175);
CGContextMoveToPoint(context, 160, 175);
CGContextAddArc(context, 160, 175, 50,-5.0*3.14/6.0,-7.0*3.14/6.0, 1);
CGContextAddLineToPoint(context, 160, 175); //画边框
//CGContextStrokePath(context); //设置填充色
[[UIColor redColor] setFill];
[[UIColor colorWithRed:0.6 green:0.4 blue:0.5 alpha:0.5] setFill]; //设置边框颜色
[[UIColor blackColor] setStroke];
//[[UIColor greenColor] set]; //EVEN-ODD, 奇偶规则填充
CGContextDrawPath(context, kCGPathEOFillStroke); //控制点
CGContextAddCurveToPoint(context, 50, 0, 50, 200, 100, 100);
CGContextAddQuadCurveToPoint(context, 150, 0, 200, 100);
CGContextStrokePath(context);
} @end