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Old 06-16-2010, 10:22 PM   #1 (permalink)
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Join Date: Dec 2009
Posts: 66
Question Drag image in area

I've been searching google and cant seem to find the answer to my question.
Im wondering how to drag an image but only within certain boundaries. When the image reaches the boundary, i want it to not be able to be dragged any further. help would be great
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Old 06-20-2010, 07:27 PM   #2 (permalink)
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Join Date: Jun 2010
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Default

Just check the specified bounds in touchesMoved. You could try something like this.

Code:
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
	UITouch *touch = [touches anyObject];
	CGPoint pt = [touch locationInView:self.view];
	// Check your bounds using pt
	// If you are good, you can then move the image
	[imageView setCenter:pt];
}
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