Cant draw on UIImage inside a UIView - ios

Question

I have a custom UIView , inside which I have to show an image as a background and draw freely on to it using touches and drags, referred to this question iOS: iOS: Drawing line is appearing behind subviews,
but doesn't seems to be working,it draws image but doesn't draw anything over it , please help
Following custom UiView draws free hand
- (id)initWithCoder:(NSCoder *)aDecoder // (1)
{
if (self = [super initWithCoder:aDecoder])
{
[self setMultipleTouchEnabled:NO]; // (2)
[self setBackgroundColor:[UIColor whiteColor]];
path = [UIBezierPath bezierPath];
[path setLineWidth:2.0];
}
return self;
}
- (void)drawRect:(CGRect)rect // (5)
{
[[UIColor blackColor] setStroke];
[path stroke];
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch *touch = [touches anyObject];
CGPoint p = [touch locationInView:self];
[path moveToPoint:p];
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch *touch = [touches anyObject];
CGPoint p = [touch locationInView:self];
[path addLineToPoint:p]; // (4)
[self setNeedsDisplay];
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
[self touchesMoved:touches withEvent:event];
}
- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
{
[self touchesEnded:touches withEvent:event];
}
#end
This is the main UIView inside I have added UiImage and OverlayView
- (id)initWithCoder:(NSCoder *)aDecoder // (1)
{
if (self = [super initWithCoder:aDecoder])
{
CGRect rect1 = self.frame;
rect1.origin.x = 0;
rect1.origin.y = 0;
UIImageView *dot =[[UIImageView alloc] initWithFrame:CGRectMake(rect1.origin.x,rect1.origin.y,rect1.size.width,rect1.size.height)];
dot.image = [UIImage imageNamed:#"miter"];
[self addSubview:dot];
OverlayView *overlay = [[OverlayView alloc] initWithFrame:CGRectMake(rect1.origin.x,rect1.origin.y,rect1.size.width,rect1.size.height)];
[overlay setBackgroundColor:[UIColor clearColor]];
[self addSubview:overlay];
[self bringSubviewToFront:overlay];
}
return self;
}
#end

Answer 1

Set the userInteractionEnabled property to YES. The default for UIViews is YES, but for UIImageViews is NO so you have to explicitly turn it on.