无法使用“UIImagePickerController.InfoKey”类型的参数为“[String : Any]”类型的值下标
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【中文标题】无法使用“UIImagePickerController.InfoKey”类型的参数为“[String : Any]”类型的值下标【英文标题】:Cannot subscript a value of type '[String : Any]' with an argument of type 'UIImagePickerController.InfoKey' 【发布时间】:2019-10-23 22:35:55 【问题描述】:我正在尝试如何更新我的代码以支持 UIImagePickerController() 在 Swift 5 中的新工作方式
我能够在此处的代码的另一部分中修复相同的错误:
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey: Any])
guard let image = info[.originalImage] as? UIImage else return
let sellLandingVC = navigationController.topViewController as? SellLandingViewController
sellLandingVC?.viewModel.insertSelectedImage(image)
navigationController.dismiss(animated: true, completion: nil)
这是我的代码,调用 imagePicker.rx.didFinishPickingMediaWithInfo.map
时出现错误private func setupRx()
let imagePicker = UIImagePickerController()
Observable.combineLatest(checkIfPermissionIsGranted(), captureButton.rx.tap) (isGranted, _ ) in return isGranted
.observeOn(MainScheduler.instance)
.subscribe(onNext: [weak self] isGranted in
self?.captureButton.pulsate()
if !isGranted
self?.displayAlert(with: self?.viewModel.accessDeniedTitle, message: self?.viewModel.accessDeniedMessage, actions: [UIAlertAction.cancel(), UIAlertAction.settings()])
else
imagePicker.sourceType = .photoLibrary
imagePicker.allowsEditing = false
self?.present(imagePicker, animated: true)
)
.disposed(by: disposeBag)
imagePicker.rx.didFinishPickingMediaWithInfo
.map
$0[UIImagePickerController.InfoKey.originalImage] as! UIImage
//This is where I'm getting the error
.map
ProfilePictureCommand.setImage($0)
.bind(to: viewModel.concurrentCommandSubject)
.disposed(by: disposeBag)
viewModel.stateObservable
.map
$0.userImage ?? #imageLiteral(resourceName: "email-signup-avatar")
.bind(to: profileImageView.rx.image)
.disposed(by: disposeBag)
imagePicker.rx.didFinishPickingMediaWithInfo
.subscribe(onNext: _ in
imagePicker.dismiss(animated: true)
)
.disposed(by: disposeBag)
viewModel.stateObservable
.map
return $0.isContinueEnabled
.bind(to: continueButton.rx.isEnabled)
.disposed(by: disposeBag)
viewModel.stateObservable
.map
return $0.isContinueEnabled
.map
$0 ? UIColor.colorHex303030(alpha: 1.0) : UIColor.colorHexC5C5C5(alpha: 1.0)
.bind(to: continueButton.rx.scBackgroundColor)
.disposed(by: disposeBag)
continueButton.rx.tap
.map ProfilePictureCommand.next
.bind(to: viewModel.concurrentThrottleCommandSubject)
.disposed(by: disposeBag)
【问题讨论】:
【参考方案1】:您的 rx 版本为您提供 [String:Any]
而不是 [UIImagePickerController.InfoKey: Any]
。 UIImagePickerController.InfoKey
现在是一个带有.originalImage
案例的枚举。如果你想用字符串下标老式方式,只需询问原始值:UIImagePickerController.InfoKey.originalImage.rawValue
$0[UIImagePickerController.InfoKey.originalImage.rawValue] as! UIImage
【讨论】:
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