您需要将掩码设置为“是”。
pathLayer.masksToBounds = YES;
试试看:
UIBezierPath *path = [UIBezierPath bezierPath];
[path moveToPoint:CGPointMake(xPaddingFromYAxis +spaceBetweenBar *j, 200)];
[path addLineToPoint:CGPointMake(xPaddingFromYAxis +spaceBetweenBar *j, yLabelValue.center.y )];
CAShapeLayer *pathLayer = [CAShapeLayer layer];
pathLayer.frame = self.bounds;
pathLayer.path = path.CGPath;
pathLayer.strokeColor = [UIColor darkGrayColor].CGColor;
pathLayer.fillColor = nil;
pathLayer.lineWidth = 50;
[pathLayer setCornerRadius:5];
pathLayer.masksToBounds = YES;
[scroll.layer addSublayer:pathLayer];