Script to zoom in / out in android using fingers

Hello, i already finish my project and I’ll upload to my android tablet, but i need some help to set the zoom in / out in my project using fingers of hand, so when i would to zoom at my tablet i use fingers to zoom in or zoom out, some help about it.

Regards,

Here is a pinch zoom / rotation script from the wiki: 1

Hope this is what you are looking for.

this might help you maybe
easiest-way-to-do-pinch-zoom