this is my tutorial on slideshow. Code base a code from: https://sushanta1991.blogspot.com/2016/12/how-to-create-carousel-view-with-unity.html
In here i'm adding specific region to take swipe input and you can loop around slide.
Here is package: https://www.dropbox.com/s/suo4m73s284xxex/carouselView.unitypackage?dl=0