我在这头上挠头。

我不断收到以下错误消息:


'NSInvalidArgumentException', reason: '-[_NSFaultingMutableSet objectAtIndex:]: unrecognized selector sent to instance

  
  0x7ff3ec6b4590'


当我尝试从收藏夹视图中访问Photo Core Data模型时。

 func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
        var cell = collectionView.dequeueReusableCellWithReuseIdentifier("cell", forIndexPath: indexPath) as! PinViewCollectionViewCell

      println(selectedPin!.attachedPhotos.count) // Returns 3
      println(selectedPin!.attachedPhotos[indexPath.row])
//^^Returns NSInvalidArgumentException', reason: '-[_NSFaultingMutableSet objectAtIndex:]:
//unrecognized selector sent to instance 0x7ff3ec6b4590'

             return cell


有什么想法可以访问附件的个人照片吗?

最佳答案

尝试这个;

println((selectedPin!.attachedPhotos.allObjects as! NSArray)[indexPath.row]);

08-16 01:39