将核心数据图像添加到集合视图单元格

发布于 2025-01-20 18:57:06 字数 1719 浏览 3 评论 0原文

我有一个集合视图。我想用存储在应用程序核心数据中的图像填充每个单元格。然而，单元格仅填充最后拍摄的图像。并不是每个良性的细胞都充满了每个单独的图像。我的代码如下：

当用户拍照时，它被压缩并存储在核心数据中：

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
    picker.dismiss（动画：true）

   守护让图像=信息[.editedImage]为？ UI图像其他{
       print("没有找到图片")
       返回
   }
   // 打印出图像大小作为测试
   打印（图像.尺寸）

   //将图像转换为coredata可保存的类型
   var jpegImageData = image.jpegData(压缩质量: 1.0)
   jegImage = jpegImageData！

   //调用coredataManger中的函数将图像以数据格式保存
   CoreDataManager.sharedInstance.addImage()

}

上面激活的添加到核心数据功能：

func addImage() {
让entityName = NSEntityDescription.entity(forEntityName: "ImageData", in: context)
让 image2 = NSManagedObject(实体: 实体名称!, insertInto: 上下文)
image2.setValue(jegImage, forKeyPath: "imageName")
做 {
  尝试 context.save()
    print("图像已保存")
} catch let 错误为 NSError {
  print("无法保存。\(error), \(error.userInfo)")
}
}

使用全局变量将图像从一个 VC 传递到另一个 VC

 //保存到核心数据的图像的全局变量
 var jegImage = 数据()
 var theImagePulled = UIImage()

尝试使用存储在核心数据中的图像填充集合视图单元格：

 func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {

     让 cell = collectionView.dequeueReusableCell(withReuseIdentifier: "HomeRoomCell", for: indexPath) as！家庭房间单元
     让 name = cartArr[indexPath.item]

     //设置集合视图中显示的图像等于核心数据中存储的全局图像
     让图像 = theImagePulled
     cell.bindData(名称：名称，图像：图像)
     返回单元格
 }

所以问题是单元格被填充，但它们都填充了相同的图像。该图像是添加到核心数据模型的最后一个图像，即使核心数据模型中有多个图像。我一直在尝试建立一个存储所有这些核心数据图像的数组，但我无法弄清楚。有什么想法吗？

原文

I have a collection view. I want to fill each cell with the images that are stored in the apps core data. However the cells only fill with the last image that was taken.
not each individual cell benign filled with each individual image.
my code is as follows:

when the user takes a photo it is compressed and stored in core data:

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
    picker.dismiss(animated: true)

   guard let image = info[.editedImage] as? UIImage else {
       print("No image found")
       return
   }
   // print out the image size as a test
   print(image.size)

   //convert image to savable type for coredata
   var jpegImageData = image.jpegData(compressionQuality: 1.0)
   jegImage = jpegImageData!

   //calling function in coredataManger to save image in data format
   CoreDataManager.sharedInstance.addImage()

}

The adding to core data function that was activated above:

func addImage() {
let entityName =  NSEntityDescription.entity(forEntityName: "ImageData", in: context)
let image2 = NSManagedObject(entity: entityName!, insertInto: context)
image2.setValue(jegImage, forKeyPath: "imageName")
do {
  try context.save()
    print("image is saved")
} catch let error as NSError {
  print("Could not save. \(error), \(error.userInfo)")
}
}

ive global variables to pass images from one VC to another

 //global variables for images saved to core data
 var jegImage = Data()
 var theImagePulled = UIImage()

Trying to populate the collection view cell with the images stored in core data:

 func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {

     let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "HomeRoomCell", for: indexPath) as! HomeRoomCell
     let name = cartoonArr[indexPath.item]

     //setting image shown in the colleciton view equal to the gloabl images stored in core data
     let image = theImagePulled
     cell.bindData(name: name, image: image)
     return cell
 }

So the problem is that the cell gets populated but they all populate with the same image. this image is the last image that was added to core data model, even though there are several images in the core data model. I have been playing around with trying to set up an array that stores all these core data images but i can't figure it out. any ideas?

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