Change color of UIBezierPath in Swift - swift

Question

I am working on a form of design project. In this project, you select an object and can change the color or size, or move.
Started a prototype of the app.
I will use UIBezierPath to draw the ways of the shapes, and will use CAShapeLayer to add to a sublayer of UIView.
This code draw one shape for example:
let insetRect = CGRect(x: 20, y: 20, width: 100, height: 100)
let path = UIBezierPath(roundedRect: insetRect, cornerRadius: 30)
UIColor.redColor().setFill()
path.fill()
path.lineWidth = 100
UIColor.blackColor().setStroke()
path.stroke()
let shapeLayer = CAShapeLayer()
shapeLayer.path = path.CGPath
shapeLayer.lineWidth = 1.0
self.view.layer.addSublayer(shapeLayer)
When the app starts, the shape is created without problems.
I wish I could click on the screen and automatically change the color (random) from shape.
Another problem: The shapes are random, and they rectangle, ellipse, rounded square. And due to these forms, I can not directly create on a View (reason for use the UIBezierPath).
Some can help me? I am trying to solve this for a few hours, and so far, found nothing.

Answer 1

Instead of adding bezierPath as sub layer, you can use a custom view. Pass a bezier path coordinates and color to the view. Keep instance of bezier path at class level and draw in DrawRect: method.
When user touches view in controller, pass custom view message to change color and redraw it.
You can simply change bezier path color by using:
yourColor.setStroke();
You can force your view to redraw bezier with changed color using:
customView.setNeedsDisplay();
EDIT
CustomView.m
-(id) initWithPath:(UIBezierPath *) path color:(UIColor *) color
{
if(self = [super init])
{
bezierPath = path;
pathColor = color;
}
return self;
}
- (void)drawRect:(CGRect)rect
{
[bezierPath stroke];
}
In controller, you can initialize as,
CustomView *customView = [[CustomView alloc] initWithPath:yourBezierPath color:[UIColor redColor];
customView.frame = yourFrame;
[self.view addSubview:customView];
To change color,
[customView setPathColor:[UIColor greenColor];
[customView setNeedsDisplay];
Hope it helps!