Question 67930 in IOS Swift Question posted in
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Xcode 14 beta error: Stored properties cannot be marked potentially unavailable with '@available' – Ios swift

I get this error when I run my app on Xcode 14 beta and I don’t know how to fix it:

Stored properties cannot be marked potentially unavailable with ‘@available’

It doesn’t pop up when I run Xcode 13, and the app runs smoothly. I am in the .xcworkspace file.

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7

Answers


  1. 0

    I have this error in Flutter project in XCode 14. One of the external packages were using:

    @available(iOS 14.0, *)
    My current fix is:

    Update version in Podfile platform :ios, ‘14.0’,
    pod update &&
    Pod install

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  2. 0

    Be sure to change both sections of the iOS Deployment Target in the Build Settings tab, like in my picture:
    enter image description here

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  3. 0

    I had the same problem. As directed by the repository on GitHub, a workaround is to update the Podfile version: platform :ios, '14.0'

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  4. 0

    In Xcode 13, and lower, you were able to compile if you used a lazy @available stored property as such:

    @available(iOS 10.0, *)
private(set) lazy var center = UNUserNotificationCenter.current()

    However, this does not work in Xcode 14.

    Instead, you need to use a non-available stored property, and use a computed @available property:

    private var _selectionFeedbackGenerator: Any? = nil
@available(iOS 10.0, *)
fileprivate var selectionFeedbackGenerator: UISelectionFeedbackGenerator {
    if _selectionFeedbackGenerator == nil {
        _selectionFeedbackGenerator = UISelectionFeedbackGenerator()
    }
    return _selectionFeedbackGenerator as! UISelectionFeedbackGenerator
}

    Answer source

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  5. 0

    In my case the problem was in flutter_inappwebview package. I’ve fixed it by using the newest version – 5.4.4+3

    https://pub.dev/packages/flutter_inappwebview/install

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  6. 0

    Let me tell you 100% working solution if this error is being raised due to DKImagePickerController.

    Follow these steps:

    1. Goto your Podfile and replace this https://github.com/miguelpruivo/DKImagePickerController.git url with this https://github.com/zhangao0086/DKImagePickerController.git url.
    2. In your flutter project run following commands:
      2.1) flutter clean
      2.2) flutter pub get
    3. Navigate to ios folder and run following commands:
      3.1) pod install (use arch -x86_64 pod install if you are using M1)
      3.2) pod update (use arch -x86_64 pod update if you are using M1)
    4. Run your project.
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  7. 0

    Brother, I just find a solution for my project, It may comes to you workaround, but I still would like to share my experience about it;

    class MyClass {
    @available(iOS 15.0, *) // Stored properties cannot be marked potentially unavailable with '@available'
    var myProperty: String
}

    Xcode offers us entire class to make @available

    @available(iOS 15.0, *)
class MyClass {
    var myProperty: String
}

    This is my workaround solution. You can use the @available attribute on its getter and setter methods instead of the property itself.

    class MyClass {
    private var myValue: String = ""
    
    @available(iOS 15.0, *)
    var myProperty: String {
        get {
            return myValue
        }
        set {
            myValue = newValue
        }
    }
}

    This is from my real project;
    enter image description here

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