Tinder like pan iOS

Question

For the Tinder app in iOS, I assume they are using a pan gesture recognizer on the image view. How is it that another image is shown underneath the image the user has started to

Answer 1

You might want to look at using CollectionViews to implement this. Have a look at https://github.com/petetodd/BGSSwipeChooser

The implementation requires a custom UICollectionViewFlowLayout (example) which can be complex to design, but you get all the good datasource management stuff that comes with CollectionViews.