Question

在一个视图控制器中，我拍摄照片并存储在coredata中：

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject])
{
    var image = info[UIImagePickerControllerEditedImage] as? UIImage
    if image == nil{
        image = info[UIImagePickerControllerOriginalImage] as? UIImage
    }
    imageView.image = image
    let newImageDescription = NSEntityDescription.entityForName("Image", inManagedObjectContext: context!) 
    let newImage = Image(entity: newImageDescription!, insertIntoManagedObjectContext: context)
    newImage.image = imageView
    var error = NSError?()
    context?.save(&error)

    dismissViewControllerAnimated(true, completion: nil)
}

另一方面，我在集合视图中显示图像：

override func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {

    var cell = collectionView.dequeueReusableCellWithReuseIdentifier("Cell", forIndexPath: indexPath) as UICollectionViewCell
    let store = stores[indexPath.row]

    var imageView = cell.viewWithTag(1) as UIImageView //ERROR HAPPENS HERE

    imageView.image = UIImage(data: store.image as NSData)

但后来我遇到致命错误：在解开Optional值时意外地发现了nil。我知道它可以节省，因为当我拍照并打印stores.count时，我得到了拍摄的照片数量。所以我想将我保存的图像显示在UIImages的集合视图中。我做错了什么？

拍照并存储在coredata中

0 个答案: