How to disable scrolling while using UIPanGestureRecognizer on a UIView - ios

Question

In my app I have a draggable UIView contained in a UIScrollView so that I can zoom it. This moving UIView has a UIPanGestureRecognizer but if I zoom in first and then I try to move the UIView, that does not happen and instead the scrolling is performed as if the UIPanGestureRecognizer is not detected.
This is my associated method to the UIPanGestureRecognizer:
func handlePan(recognizer: UIPanGestureRecognizer) {
if (self.panRec.state == UIGestureRecognizerState.Began) {
self.scrollViewContainer.scrollEnabled = false
}
else if (self.panRec.state == UIGestureRecognizerState.Ended) {
self.scrollViewContainer.scrollEnabled = true
}
let translation = recognizer.translationInView(self)
if let view = recognizer.view {
self.center = CGPoint(x:view.center.x + translation.x,
y:view.center.y + translation.y)
}
recognizer.setTranslation(CGPointZero, inView: self)
self.updatePinsPosition()
}
As you can see I try to disable scrolling when the the user taps in the draggable UIView and reactivate it at the end but it doesn't work. Where am I making a mistake? What am I missing?
UPDATE
So explain myself better, I have a UIScrollView which contains a UIView and inside this last there are some other UIViews acting as pinch, the azure ones. I decided to use a further UIView as container so that the sub views are zoomed all together by scrolling. So, my zoom code is the following:
class PhotoViewController: UIViewController, UINavigationControllerDelegate, UIImagePickerControllerDelegate, UIScrollViewDelegate {
#IBOutlet weak var scrollView: UIScrollView!
#IBOutlet weak var containerView: ContainerController!
override func viewDidLoad() {
...
self.scrollView.delegate = self
self.scrollView.showsVerticalScrollIndicator = true
self.scrollView.flashScrollIndicators()
self.scrollView.minimumZoomScale = 1.0
self.scrollView.maximumZoomScale = 10.0
}
func viewForZoomingInScrollView(scrollView: UIScrollView) -> UIView? {
return self.containerView
}
}

Answer 1

You have to override this method of Scrollview Delegate in your ViewController for both zooming and panning
- (void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(float)scale {
scale *= [[[self.scrollView window] screen] scale];
[view setContentScaleFactor:scale]; // View which you want to Zoom & pan.
for (UIView *subview in view.subviews) {
[subview setContentScaleFactor:scale]; // all the Container Views
}
}
Hope it will help you to solve your problem.