UICollectionView：选择时对动画单元格大小进行更改

[UIView transitionWithView:collectionView
duration:.5
options:UIViewAnimationOptionTransitionCurlUp
animations:^{

    //any animatable attribute here.    cell.frame = CGRectMake(3, 14, 100, 100);} completion:^(BOOL finished) {    //whatever you want to do upon completion}];

沿您的

didselectItemAtIndexPath