iphone - CAShapeLayer 不是圆角，并且笔划不在顶部

Question

大家好，我已经创建了这个框，基本上角半径不起作用，并且笔划也没有显示在形状的顶部。反正有没有让这个工作？

UIBezierPath* conPath = [UIBezierPath bezierPath];
[conPath moveToPoint:CGPointMake(conX, conY)];
[conPath addLineToPoint:CGPointMake(conX, conY+50)];
[conPath addLineToPoint:CGPointMake(conX+220, conY+50)];
[conPath addLineToPoint:CGPointMake(conX+220, conY)];

CAShapeLayer* conLayer = [CAShapeLayer layer];
conLayer.path = conPath.CGPath;
conLayer.cornerRadius = 5.0;
UIColor *bg = [UIColor colorWithWhite:1 alpha:0.7];
[conLayer setFillColor:bg.CGColor];
[conLayer setStrokeColor:[UIColor grayColor].CGColor];
[[self layer] addSublayer:conLayer];