CAShapeLayer used in UIView subclass doesn't work

Question

i tried a few hours to get a dotted border around my UIView with CAShapeLayer but i don\'t get it displayed.
ScaleOverlay.h

#import 

        

Answer 1

You never add shapeLayer as a sublayer of your UIView's layer, so it's never displayed onscreen. Try adding

[self.layer addSublayer:shapeLayer_];

after you set up your CAShapeLayer in your -initWithFrame: method.

Even better, you could try making your UIView's backing layer a CAShapeLayer by overriding the following class method:

+ (Class) layerClass 
{
    return [CAShapeLayer class];
}

You could then deal with the view's layer directly, and eliminate the additional CAShapeLayer instance variable.