フォトライブラリからユーザーが選択した画像を提供しようとしています。したがって、選択にはUIImagePickerController
を使用しています。しかし、ファイルシステムで初期URLを取得する際に問題が発生します(CKAsset
に必要です)。
私のコード。
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]) {
let imageURL = info[UIImagePickerControllerReferenceURL] as NSURL
let path = imageURL.path!
let imageName = path.lastPathComponent
let paths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)
let documentDirectory = paths.first as String!
let localPath = documentDirectory + "/" + imageName
let imageData = NSData(contentsOfFile: localPath)!
let image = UIImage(data: imageData)!
picker.dismissViewControllerAnimated(true, completion: nil)
}
imageURLはちょっと不可解です。アセットURLを記述していますが、ファイルシステムのURLは記述していません。そして次のようになります:assets-library://asset/asset.JPG?id=B6C0A21C-07C3-493D-8B44-3BA4C9981C25&ext=JPG
。
このロジックによれば、path is /asset.JPG
どこ asset.JPG
は画像の名前です。
次に、Documentsフォルダーにアクセスして、パスのあるファイルを見つけようとしています。
/Users/Eugene/Library/Developer/CoreSimulator/Devices/3C5E9A23-8220-4B37-BD14-F1E42EEC2C7C/data/Containers/Data/Application/20EBAAE2-6C6F-4651-A48F-16A222CCB3A2/Documents/asset.JPG
同様に不可解ですが、存在しないイメージの本当のパスのようです...そのパスを持つイメージは見つかりません。そして、これは私を病気にします。
最初から画像を保存する必要がありますか?それとも他に行く方法はありますか?
AssetsLibrary APIを使用していくつかのチュートリアルを調べましたが、問題を解決するのに役立つものは見つかりませんでした。前もって感謝します!
さて、私は問題を解決しました。
あなたがしなければならないのは、単に画像をつかむことです(info[UIImagePickerControllerOriginalImage] as UIImage
)指定されたディレクトリに保存します。 1枚の画像のみを保存する必要がある場合は、うまく機能します。以下のコードID。
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]) {
let imageURL = info[UIImagePickerControllerReferenceURL] as NSURL
let imageName = imageURL.path!.lastPathComponent
let documentDirectory = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).first as String
let localPath = documentDirectory.stringByAppendingPathComponent(imageName)
let image = info[UIImagePickerControllerOriginalImage] as UIImage
let data = UIImagePNGRepresentation(image)
data.writeToFile(localPath, atomically: true)
let imageData = NSData(contentsOfFile: localPath)!
let photoURL = NSURL(fileURLWithPath: localPath)
let imageWithData = UIImage(data: imageData)!
picker.dismissViewControllerAnimated(true, completion: nil)
}
Swift 4 uこれを試すことができます、それは正常に動作しています。
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
if let imgUrl = info[UIImagePickerControllerImageURL] as? URL{
let imgName = imgUrl.lastPathComponent
let documentDirectory = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first
let localPath = documentDirectory?.appending(imgName)
let image = info[UIImagePickerControllerOriginalImage] as! UIImage
let data = UIImagePNGRepresentation(image)! as NSData
data.write(toFile: localPath!, atomically: true)
//let imageData = NSData(contentsOfFile: localPath!)!
let photoURL = URL.init(fileURLWithPath: localPath!)//NSURL(fileURLWithPath: localPath!)
print(photoURL)
}
APPDEL.window?.rootViewController?.dismiss(animated: true, completion: nil)
}
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]) {
//this block of code grabs the path of the file
let imageURL = info[UIImagePickerControllerReferenceURL] as NSURL
let imagePath = imageURL.path!
let localPath = NSURL(fileURLWithPath: NSTemporaryDirectory()).URLByAppendingPathComponent(imagePath)
//this block of code adds data to the above path
let path = localPath.relativePath!
let imageName = info[UIImagePickerControllerOriginalImage] as UIImage
let data = UIImagePNGRepresentation(imageName)
data?.writeToFile(imagePath, atomically: true)
//this block grabs the NSURL so you can use it in CKASSET
let photoURL = NSURL(fileURLWithPath: path)
}
このソリューションを確認してください。
import AssetsLibrary
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
self.imagePicker = picker
if let selectedImage = info[UIImagePickerControllerOriginalImage] as? UIImage {
let controller = CropViewController(image: selectedImage )
controller.delegate = self
picker.presentViewController(controller, animated: true, completion: nil)
}
else if let imageUrl = info[UIImagePickerControllerReferenceURL] as? NSURL{
let assetLibrary = ALAssetsLibrary()
assetLibrary.assetForURL(imageUrl , resultBlock: { (asset: ALAsset!) -> Void in
if let actualAsset = asset as ALAsset? {
let assetRep: ALAssetRepresentation = actualAsset.defaultRepresentation()
let iref = assetRep.fullResolutionImage().takeUnretainedValue()
let image = UIImage(CGImage: iref)
let controller = CropViewController(image: image)
controller.delegate = self
picker.presentViewController(controller, animated: true, completion: nil)
}
}, failureBlock: { (error) -> Void in
})
}
}
In Swift 4
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
if let imgUrl = info[UIImagePickerControllerReferenceURL] as? URL{
let imgName = imgUrl.lastPathComponent
let documentDirectory = NSTemporaryDirectory()
let localPath = documentDirectory.appending(imgName)
let image = info[UIImagePickerControllerOriginalImage] as! UIImage
let data = UIImageJPEGRepresentation(image, 0.3)! as NSData
data.write(toFile: localPath, atomically: true)
let photoURL = URL.init(fileURLWithPath: localPath)
}
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
//obtaining saving path
let fileManager = FileManager.default
let documentsPath = fileManager.urls(for: .documentDirectory, in: .userDomainMask).first
let imagePath = documentsPath?.appendingPathComponent("image.jpg")
// extract image from the picker and save it
if let pickedImage = info[UIImagePickerController.InfoKey.originalImage] as? UIImage {
let imageData = pickedImage.jpegData(compressionQuality: 0.75)
try! imageData?.write(to: imagePath!)
}
}
ありがとう
let imgUrl = info[UIImagePickerController.InfoKey.imageURL] as? URL