从UIActionSheet更改UIImageView的alpha和show

In my UIActionSheet I have a button which mark the touched array as favorite. When an array is favorite, I have a star that shows before the array's name. The favorite icon has an alpha 0, and by touching the "Add as Favorite" button the alpha changes to 1. The arrays are located inside an UIViewController, which shows 1 array in each cell.In my UIActionSheet I have a button which mark