objective-c - 使用动画重新加载 Collection View

Question

我想用动画重新加载集合。我浏览了文档，他们提供了以下方法。我用过。它工作正常。现在我想处理动画的速度(慢/快)。可以通过这种方法吗？

  - (void)performBatchUpdates:(void (^)(void))updates completion:(void (^)(BOOL finished))completion;

我的代码:

[mycollectionView performBatchUpdates:^{
    [mycollectionView reloadData];
   };

Answer 1

为单元格添加移动效果和动画:

 - (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
    {

    CGFloat xx=cell.frame.origin.x;
         CGFloat yy=cell.frame.origin.y;



        CGRect frame = cell.frame;
        frame.origin.x = 500; // new x coordinate
        frame.origin.y = 0; // new y coordinate
        cell.frame = frame;


        [UIView animateWithDuration:2.0 animations:^{

            CGRect frame = cell.frame;
            frame.origin.x = xx; // new x coordinate
            frame.origin.y = yy; // new y coordinate
            cell.frame = frame;
            // cell.entityImageEffect.alpha = 1;
        }];

    return cell;

    }