Detect collision of two UIView's in swift

I have two UIViews on my ViewController. I added panGesture to first view and when i start moving this view the second view will move towards first view. I want to detect an event when these two views collides. Here is my code.

@IBAction func dragFirstView(sender: UIPanGestureRecognizer) {

        let translation = sender.translationInView(self.view)

        dispatch_async(dispatch_get_main_queue()) { () -> Void in
            UIView.animateWithDuration(2.5, delay: 0.0, options: UIViewAnimationOptions.CurveEaseOut, animations: {
                self.secondView.frame = CGRectMake(sender.view!.center.x + translation.x, sender.view!.center.y + translation.y, self.secondView.frame.size.width, self.secondView.frame.size.height)
                }, completion: nil)

        sender.view!.center = CGPoint(x: sender.view!.center.x + translation.x, y: sender.view!.center.y + translation.y)
        sender.setTranslation(CGPointZero, inView: self.view)

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  • 2 Solutions Collect From Internet About “Detect collision of two UIView's in swift”

    what about

    if (CGRectIntersectsRect(secondView.frame, sender.frame)) {
            // Do something

    CGRectIntersectsRect(:🙂 : Returns whether two rectangles intersect.

    Swift 3 CGRectIntersectsRect replace with intersects

    for collider in colliders
                if (collider.frame.intersects(frameTarget)) {