Drawing in Custom ScrollView

I'm trying to draw in a scrollview on top of an image using multi-touch. The circles are actually drawn, but under the image. In my code I currently create a custom ScrollView:

@interface AppScrollView : UIScrollView {

//objects to draw circles
NSMutableDictionary *circlesInProcess;
NSMutableArray *completeCircles;

}

@end

In my AppScrollView.m I override touches commands to store touches and add a

    (void)drawRect:(CGRect) rect  

method to draw the circles in the scrollview. I also include

    [self setNeedsDisplay] 

to display the circles. In my app controller, I declare the new custom scrollView object:

    IBOutlet AppScrollView *scrollView;

Later I add an image to the scrollView using:

    [scrollView addSubview:myImage];
开发者_开发知识库

The image is visible, but when I try to draw circles on top of it, they are drawn under the image. Let me know if you have any suggestions?

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Suggestion: draw the image onto your scrollview (instead of adding the image view as a subview) and then draw the circles on top of that.

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In your code check where did you add you custom scrollview. Is it added after imageView is added or before.

You scrollView should be on top of imageView.