title: GridView Scroll By one row
body: <p>Hi i am implementing a gridView and i have trouble making it scroll down 1 row at a time with every scroll event. </p>
  
  <p>my grid has a height of 1 row item (items height is 75dp). i don't want scrolling to be left in a middle of a row. </p>
  
  <p>is there a way i can intercept and modify the scroll distance so that it only returns fixed value ex: +-75dp.</p>
  
  <p>i would appreciate any help or suggestions you can give me. tnx</p>