How to create rounded corners with CAShapeLayer

Question

Is there a way to add rounded corners to a CAShapeLayer? In my case I needed the shape layer to create a dashed border via lineDashPattern.

Answer 1

The answer is simple. Create a bezier path with rounded corners.

self.clipsToBounds = YES; 
self.layer.cornerRadius = 10.0;

self.border = [CAShapeLayer layer];
self.border.fillColor = nil;
self.border.path = [UIBezierPath bezierPathWithRoundedRect:self.bounds cornerRadius:10.0];
self.border.frame = self.bounds;

self.border.strokeColor = [UIColor purpleColor].CGColor;
self.border.lineWidth = borderWidth * 2; // double desired width as half will be clipped
self.border.lineDashPattern = @[@15];

[self.layer addSublayer:self.border];