How can I swipe function that lets the player select buttons?

I'm making an iPhone app that has a scene filled with a ton of buttons. I want to make it easy for the user to select them, so I was wondering if and how I could make it so that the player could just swipe their finger and select a whole row or more. I just wanted to make the functionality, so that they could select as many buttons as they wanted without lifting a finger. I've tried using collisions to the best of my knowledge, but nothing happened. Each button has a renderer and when it is selected, the material changes. I'm new to making iOS and have been working on this for awhile now. Help would be much appreciated.