英文:
Cannot assign value of type 'SignUpViewController' to type '(UIImagePickerControllerDelegate & UINavigationControllerDelegate)?'
问题
@objc func presentPicker(){
let picker = UIImagePickerController()
picker.sourceType = .photoLibrary
picker.allowsEditing = true
picker.delegate = self //error
self.present(picker, animated: true, completion: nil)
}
extension SignInViewController: UIImagePickerControllerDelegate, UINavigationControllerDelegate {
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
if let imageSelected = info[.editedImage] as? UIImage {
avatar.image = imageSelected
}
if let imageOriginal = info[.originalImage] as? UIImage {
avatar.image = imageOriginal
}
picker.dismiss(animated: true, completion: nil)
}
}
I think(！) I have copied the tutorial code correctly but get two errors in my ImagePicker struct
//Error: Cannot assign value of type 'SignUpViewController' to type '(UIImagePickerControllerDelegate & UINavigationControllerDelegate)?'
I'm using Xcode 13.
英文:
@objc func presentPicker(){
let picker = UIImagePickerController()
picker.sourceType = .photoLibrary
picker.allowsEditing = true
picker.delegate = self //error
self.present(picker, animated: true, completion: nil)
}
extension SignInViewController: UIImagePickerControllerDelegate, UINavigationControllerDelegate {
func imagePickerController(\_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: \[UIImagePickerController.InfoKey : Any\]) {
if let imageSelected = info\[UIImagePickerController.InfoKey.editedImage\] as? UIImage {
avatar.image = imageSelected}
if let imageOriginal = info[UIImagePickerController.InfoKey.originalImage] as?
UIImage {
avatar.image = imageOriginal
}
picker.dismiss(animated: true, completion: nil)
}
}
I think(!) I have copied the tutorial code correctly but get two errors in my ImagePicker struct
//Error: Cannot assign value of type 'SignUpViewController' to type '(UIImagePickerControllerDelegate & UINavigationControllerDelegate)?'
I'm using Xcode 13.
答案1
得分: 0
在以下代码行：
> picker.delegate = self
你已将SignUpViewController对象分配给了picker的代理，并且你已将UIImagePickerControllerDelegate继承到了SignInViewController类，而不是SignUpViewController类。
请将SignInViewController:的扩展替换为SignUpViewController:。
英文:
At line
> picker.delegate = self
You have assigned SignUpViewController object to picker delegate and you have inherited UIImagePickerControllerDelegate into SignInViewController class instead of SignUpViewController
replace extension SignInViewController: with extension SignUpViewController:
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