Make dotted line following uibezierpath

Question

I have seen many examples of drawing a dashed line for iOS. I would like to draw a dotted line made of circles that follow my path. I want to use a shape layer so I can animate the stroke to simulate it being drawn onscreen.

Any suggestions for drawing little dots that follow my uibezierpath?

Conversely - is this not possible? If so can I array a bunch of circles along a path and then iterate through the array of circles making them visible? But how to array circles along a bezier?

Answer 1

I was able to draw a dashed line with circles between two uiviews:

// dotted line
    CGContextSetStrokeColorWithColor(ctx, [UIColor redColor].CGColor);
    CGContextSetLineWidth(ctx, 10); // relevant code
    CGFloat dash[] = {0.0, 10*2}; // relevant code
    CGContextSetLineCap(ctx, kCGLineCapRound); // relevant code
    CGContextSetLineDash(ctx, 0.0, dash, 2);
    CGContextMoveToPoint(ctx, view.center.x, view.center.y);
    CGContextAddLineToPoint(ctx, anotherView.center.x, anotherView.center.y);
    CGContextStrokePath(ctx);