Question

I used scrollview in my project for zoom. There is a view in scrollview. I can zoom using scrollview’s delegate. Can I rotate my view using scrollview delagete, Or shall I use UIPinchGestureRecognizer?

Answer 1

UIScrollView already has a UIPinchGestureRecognizer for zooming and UIPanGestureRecognizer for panning (and has properties to access these). I shouldn’t need to use the UIScrollViewDelegate for nominal zooming or panning. You just need to set the minimum and maximum zoom, and panning content size. E.g.,

self.scrollView.minimumZoomScale = 0.5;
self.scrollView.maximumZoomScale = 5.0;
self.scrollView.contentSize = CGSizeMake(2000.0 , 2000.0);