ios - 使用dequeueReusableCellWithReuseIdentifer时出错

我在情节提要中有一个具有4个集合视图单元原型的集合视图，这些原型具有以下标识符：“单元”，“ NoAlbumSelectedCell”，“ NoPhotosCell”和“ NoVideosCell”。

这是我用来加载单元格的代码：

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView
              cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
if (self.noAlbumSelected) {
    return [collectionView dequeueReusableCellWithReuseIdentifier:@"NoAlbumSelectedCell" forIndexPath:indexPath];
}

if ([self.medias count] == 0) {
    if ([self.listType isEqualToString:@"photo"]) {
        UICollectionViewCell *noPhotosCell = [collectionView dequeueReusableCellWithReuseIdentifier:@"NoPhotosCell" forIndexPath:indexPath];
        return noPhotosCell;
    } else {
        UICollectionViewCell *noVideosCell = [collectionView dequeueReusableCellWithReuseIdentifier:@"NoVideosCell" forIndexPath:indexPath];
        return noVideosCell;
    }
}

MediaCollectionViewCell *cell = (MediaCollectionViewCell *)[collectionView dequeueReusableCellWithReuseIdentifier:@"Cell" forIndexPath:indexPath];

[self configureCell:cell forItemAtIndexPath:indexPath];

return cell;
}

当我尝试显示“ NoPhotosCell”单元格时，出现以下错误：

*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'could not dequeue a view of kind: UICollectionElementKindCell with identifier NoPhotosCell - must register a nib or a class for the identifier or connect a prototype cell in a storyboard'

我试图进行清洁和重建。

最佳答案

您是否在viewController的viewDidLoad的末尾添加了以下几行？

[self.collectionView registerClass:[MediaCollectionViewCell class] forCellWithReuseIdentifier:@"Cell"];
[self.collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:@"NoAlbumSelectedCell"];
[self.collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:@"NoPhotosCell"];
[self.collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:@"NoVideosCell"];

如果您有子类UICollectionViewCell，则应将[YourUICollectionViewSubClass class]与上述各行结合使用。