私は、ユーザから収集した画像の配列を作成しています。この配列は、UICollectionViewに画像を表示するために使用されています。私はImageStore.swiftというファイルに画像を収集/保存しています。以下を参照してください。また、私のUICollectionビューの配列を参照してください。イメージを渡すために配列に何を配置したらよいですか?収集した画像の配列を作成する
UICollectionViewとビューコントローラ:
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)
}
}
詳細ビューコントローラ:
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)
}
コードをコピーして元に戻し、画像を削除してください。 – shallowThought
コードをコピーして貼り付けました。 – Allie
^@shallowThought – Allie