Ios 创建收集的图像数组

我正在创建从用户收集的图像数组。此阵列用于在UICollectionView中显示图像。我正在将图像收集/存储在一个名为ImageStore.swift的文件中，请参见下文。另外，请参见“我的UICollection”视图中的数组。我应该在数组中放入什么来传递图像

具有UICollectionView的视图控制器：

    class PhotosViewController: UIViewController, UICollectionViewDelegate, UICollectionViewDataSource {
override func viewDidLoad() {
    super.viewDidLoad()
}

override func viewWillAppear(animated: Bool) {
    super.viewWillAppear(animated)

    let layout: UICollectionViewFlowLayout = UICollectionViewFlowLayout()
    layout.sectionInset = UIEdgeInsets(top: 20, left: 10, bottom: 10, right: 10)
    layout.itemSize = CGSize(width: 100, height: 100)

    let myCollectionView:UICollectionView = UICollectionView(frame: self.view.frame, collectionViewLayout: layout)
    myCollectionView.dataSource = self
    myCollectionView.delegate = self
    myCollectionView.registerClass(RDCellCollectionViewCell.self, forCellWithReuseIdentifier: "MyCell")
    myCollectionView.backgroundColor = UIColor.whiteColor()
    self.view.addSubview(myCollectionView)
}

func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    return images.count
}

var images: [UIImage] = [

]

func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
    let myCell = collectionView.dequeueReusableCellWithReuseIdentifier("MyCell", forIndexPath: indexPath) as! RDCellCollectionViewCell
    myCell.imageView.image = images[indexPath.item]
    myCell.backgroundColor = UIColor.grayColor()
    return myCell
}

func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath)
{
    print("User tapped on item \(indexPath.row)")
}


override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

}

ImageStore.swift：

    class ImageStore: NSObject {

let cache = NSCache()

func setImage(image: UIImage, forKey key: String) {
    cache.setObject(image, forKey: key)

    let imageURL = imageURLForKey(key)

    if let data = UIImageJPEGRepresentation(image, 0.5) {
        data.writeToURL(imageURL, atomically: true)
    }
}
func imageForKey(key: String) -> UIImage? {
    if let existingImage = cache.objectForKey(key) as? UIImage {
        return existingImage
    }

    let imageURL = imageURLForKey(key)
    guard let imageFromDisk = UIImage(contentsOfFile: imageURL.path!) else {
        return nil
    }

    cache.setObject(imageFromDisk, forKey: key)
    return imageFromDisk
}

func deleteImageForKey(key: String) {
    cache.removeObjectForKey(key)

    let imageURL = imageURLForKey(key)
    do {
        try NSFileManager.defaultManager().removeItemAtURL(imageURL)
    }
    catch let deleteError {
        print("Error removing the image from disk: \(deleteError)")
    }
}

func imageURLForKey(key: String) -> NSURL {
    let documentsDirectories =
    NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)
    let documentDirectory = documentsDirectories.first!

    return documentDirectory.URLByAppendingPathComponent(key)
}

}

局部视图控制器：

var imageStore: ImageStore!

@IBAction func takePicture(sender: UIBarButtonItem) {

    let imagePicker = UIImagePickerController()

    if UIImagePickerController.isSourceTypeAvailable(.Camera) {
        imagePicker.sourceType = .Camera
    } else {
        imagePicker.sourceType = .PhotoLibrary
    }
    imagePicker.delegate = self

    presentViewController(imagePicker, animated: true, completion: nil)
}

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String: AnyObject]) {

    let image = info[UIImagePickerControllerOriginalImage] as! UIImage

    imageStore.setImage(image, forKey: item.itemKey)

    imageView.image = image

    dismissViewControllerAnimated(true, completion: nil)
}

---

如果要将所有图像添加到阵列中，只需执行以下操作：

let imagesArray = [UIImage(named: "img1"), UIImage(named: "img2"), UIImage(named: "img3"), UIImage(named: "img4")]

如果要附加图像，请执行以下操作：

imagesArray.append(UIImage(named: "imageName"))

---

对于大型数据集，最好的方法是使用SQLite数据库存储文件名，该文件名可以通过捕获图像的时间戳来区分。 如果您正在应用程序中使用脱机功能

1.Create table for image name
|user_id|image_name|
|       |          |
|       |          |

2.Get all image name from database for particular user and store it in Array
3.Search for image in document directory

    --Update or delete the image from the database and document directory according to user action 

---

请复制代码并删除图像。我复制并粘贴了代码。^@shallow尽管我有点困惑。是否要知道在集合视图文件中放置阵列的位置？或者您想知道如何将图像放入阵列？我想知道如何将图像放入阵列@Calebkleveter这将很容易，但我的图像是由用户上传的。我没有名字。谢谢你这个好主意。我以前从未使用过SQLite数据库。你能看一下我上面的代码并帮我设置一下吗？我不太确定从哪里开始。我提出了一个新问题来帮助解决这个问题。请看