Question

我有一个包含不同图像的数组，我在其中使用“cellForItemAtIndexPath”方法添加到CollectionView，我正在尝试使用“didSelectItemAtIndexPath”方法来确定所选单元格是否是最后一个，但是我似乎可以做对。任何帮助，将不胜感激！这是我的方法：

-(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath  {

UICollectionViewCell *cell =[collectionView cellForItemAtIndexPath:indexPath];
  if(cell == [PicArray lastObject])
  {
    NSLog(@"selected last cell");
  }

}

Answer 1

-(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath  {
    if ([indexPath.item == PicsArray.count-1]) {
       NSLog(@"selected last cell");
    }
 }

Answer 2

我明白了。（count是数组中对象的计数）。

-(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath  {

NSIndexPath *indexPath2 = [NSIndexPath indexPathForItem:(int)count inSection:0];

if([indexPath isEqual:indexPath2])
    {
    UICollectionViewCell *cell =[collectionView cellForItemAtIndexPath:indexPath];
     NSLog(@"selected last cell");
    }
}

Answer 3

我使用的是UICollectionView inbuild方法

override func collectionView(collectionView: UICollectionView, willDisplayCell cell: UICollectionViewCell, forItemAtIndexPath indexPath: NSIndexPath) {
        if indexPath.row == dataSource.count - 1 {
            // Last cell is visible
            if self.pagination.has_more {
                fetchFeeds()
            }
        }

}

如何选择CollectionView中的最后一个单元格？

3 个答案: