私の以下のコードはSwift 4でうまく動作しましたが、Swift 4.2にアップグレードした後、私はこのエラーを取得し、問題の原因を探すのに3時間を無駄にしました失敗しました。誰かが私にこれを修正する方法を案内できるならお願いします。
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
if postType == 2 {
let image = info[convertFromUIImagePickerControllerInfoKey(UIImagePickerController.InfoKey)] as! UIImage
mediaType.image = image
} else {
videoURL = info[convertFromUIImagePickerControllerInfoKey(UIImagePickerController.InfoKey.mediaURL)] as? URL
do {
let asset = AVURLAsset(url: videoURL!, options: nil)
let imgGenerator = AVAssetImageGenerator(asset: asset)
imgGenerator.appliesPreferredTrackTransform = true
let cgImage = try imgGenerator.copyCGImage(at: CMTime.init(value: 0, timescale: 1), actualTime: nil)
let thumbnail = UIImage(cgImage: cgImage)
self.mediaType.image = thumbnail
} catch {
print("*** Error generating thumbnail: \(error)")
}
}
picker.dismiss(animated: true, completion: nil)
}
次のように書くことができます...
if let image = info[.originalImage] as? UIImage {
print("image found")
//do something with an image
} else {
print("Not able to get an image")
}
info[convertFromUIImagePickerControllerInfoKey(UIImagePickerController.InfoKey)]
意味がありません。特定の値ではなく、列挙型InfoKey
全体を指定しています。例:
info[convertFromUIImagePickerControllerInfoKey(UIImagePickerController.InfoKey.originalImage)]
おそらく次のように書くこともできます。
info[.originalImage] as! UIImage
次のようにプロパティにアクセスできます。
var editedImage = (info[UIImagePickerControllerEditedImage] as? UIImage)!
var originalImage = (info[UIImagePickerControllerOriginalImage] as? UIImage)!
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any])
{
// Local variable inserted by Swift 4.2 migrator.
let info = convertFromUIImagePickerControllerInfoKeyDictionary(info)
if picker.sourceType == .photoLibrary || picker.sourceType == .camera
{
let img: UIImage = info[convertFromUIImagePickerControllerInfoKey(UIImagePickerController.InfoKey.editedImage)] as! UIImage
EditedImage=img
WAProfile_UserImageView.image=EditedImage
picker.dismiss(animated: true, completion: nil)
}
}
// Helper function inserted by Swift 4.2 migrator.
fileprivate func convertFromUIImagePickerControllerInfoKeyDictionary(_ input: [UIImagePickerController.InfoKey: Any]) -> [String: Any] {
return Dictionary(uniqueKeysWithValues: input.map {key, value in (key.rawValue, value)})}
// Helper function inserted by Swift 4.2 migrator.
fileprivate func convertFromUIImagePickerControllerInfoKey(_ input: UIImagePickerController.InfoKey) -> String {
return input.rawValue}