我尝试了以下代码:-(UICollectionViewCell*)collectionView:(UICollectionView*)collectionViewcellForItemAtIndexPath:(NSIndexPath*)indexPath{Pictograma*pictograma;pictograma=[pictogramasobjectAtIndex:indexPath.row];AddPictogramaCell*newCell=[[AddPictogramaCellalloc]initWithFrame:CGRectMake(0,0,200,200)pictog