Touch problem with multiple uiimageviews

[dchildress]

I am trying to build an app where I have multiple imageviews on the screen. The user needs to drag one of the images to answer a question. The problem is as the users drags the image down and goes over another image, the second images also begins to be dragged along with the first. How can I check to make sure only one image is moved at a time.

I started out with this

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{

	NSSet *allTouches = [event allTouches];
	UITouch * touch = [[allTouches allObjects] objectAtIndex:0];


	CGPoint location = [touch locationInView:self.view];

	if (CGRectContainsPoint([myApple1 frame], location)) {
		myApple1.center=CGPointMake(location.x,location.y);
	} 
	if (CGRectContainsPoint([myApple2 frame], location)) {
		myApple2.center=CGPointMake(location.x,location.y);
	} 
	if(CGRectContainsPoint([myApple3 frame], location)) {
		myApple3.center=CGPointMake(location.x,location.y);
		
	} 
	
	
	
}

also tried this:

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{

	NSSet *allTouches = [event allTouches];
	UITouch * touch = [[allTouches allObjects] objectAtIndex:0];


	CGPoint location = [touch locationInView:self.view];

	if (CGRectContainsPoint([myApple1 frame], location)) {
		myApple1.center=CGPointMake(location.x,location.y);
	} else if (CGRectContainsPoint([myApple2 frame], location)) {
		myApple2.center=CGPointMake(location.x,location.y);
	} else if(CGRectContainsPoint([myApple3 frame], location)) {
		myApple3.center=CGPointMake(location.x,location.y);
		
	} 
	
	
	
}

how can I make sure I only move one image at a time? Thank you for your help!