UICollectionView的Cell加载动画

-(void)collectionView:(UICollectionView *)collectionView willDisplayCell:(UICollectionViewCell *)cell forItemAtIndexPath:(NSIndexPath *)indexPath {//    CGAffineTransformMake(a,b,c,d,tx,ty)//    ad缩放bc旋转tx,ty位移，基础的2D矩阵    cell.transform = CGAffineTransformMakeScale(1.4, 1.4);//CGAffineTransformMake(1.4, 0, 0, 1.4, 10, 10);    [UIView animateWithDuration:0.5 delay:0.0 options:UIViewAnimationOptionCurveEaseInOut animations:^{        cell.transform = CGAffineTransformIdentity;    } completion:nil];}