如何使用 indexpath.row 从 UICollectionView 中删除项目 [英] How to delete an item from UICollectionView with indexpath.row

问题描述

我有一个集合视图，我尝试使用 didSelect 方法从集合视图中删除一个单元格.我使用以下方法成功了

I have a collection view,and I tried to delete a cell from collection view on didSelect method.I succeeded in that using the following method

  [colleVIew deleteItemsAtIndexPaths:[NSArray arrayWithObject:indexPath]];

但现在我需要从 CollectionView Cell 中删除按钮单击时的项目​​.这里我只得到 indexpath.row.从此我无法删除该项目.我试过这样.

But now I need to delete the item on button click from CollectionView Cell.Here I get only the indexpath.row. From this I am not able to delete the Item. I tried like this.

-(void)remove:(int)i {

    NSLog(@"index path%d",i);
   [array removeObjectAtIndex:i];

   NSIndexPath *indexPath =[NSIndexPath indexPathForRow:i inSection:0];
   [colleVIew deleteItemsAtIndexPaths:[NSArray arrayWithObject:indexPath]];
    [colleVIew reloadData];
  }

但它需要重新加载CollectionView.所以删除后的单元格排列动画不存在.请提出一个想法..提前谢谢

But it needs to reload the CollectionView.So the animation of cell arrangement after deletion is not there. Please suggest an idea..thanks in advance

推荐答案

-(void)remove:(int)i {

    [self.collectionObj performBatchUpdates:^{
        [array removeObjectAtIndex:i];
        NSIndexPath *indexPath =[NSIndexPath indexPathForRow:i inSection:0];
        [self.collectionObj deleteItemsAtIndexPaths:[NSArray arrayWithObject:indexPath]];

    } completion:^(BOOL finished) {

    }];
}

试试这个.它可能对你有用.

Try this. It may work for you.

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