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，我尝试从didSelect方法的集合视图中删除一个单元格。我成功地使用以下方法

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中删除按钮上的项目。这里我只得到indexpath 。行。
由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.So删除后的单元格排列动画不在这里。
请提出建议..谢谢提前

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。它可能适合你。

Try this. It may work for you.

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