Cannot convert value of type 'AutoreleasingUnsafeMutablePointer<NSArray>' to expected argument type 'AutoreleasingUnsafeMutablePointer<NSArray?>?'

[surayashivji]

I'm getting this issue while trying to run the iOS example code (Objective-C) on the Xcode 9 beta.

Cannot convert value of type 'AutoreleasingUnsafeMutablePointer' to expected argument type 'AutoreleasingUnsafeMutablePointer<NSArray?>?'

Does anyone have any idea on a fix?

[liuxuan30]

I really don't know why you can't run it while I just downloaded xcode 9 beta and simply clicked build and run without any issue.

Have you touched anything?

[thierryH91200]

open class func viewFromXib() -> MarkerView?
    {
        #if !os(OSX)
            return Bundle.main.loadNibNamed(
                String(describing: self),
                owner: nil,
                options: nil)?[0] as? MarkerView
        #else
            
            var loadedObjects = NSArray()
            let loadedObjectsPointer = AutoreleasingUnsafeMutablePointer<NSArray?>(&loadedObjects)
            
            if Bundle.main.loadNibNamed(
                String(describing: self),
                owner: nil,
                topLevelObjects: loadedObjectsPointer)
            {
                return loadedObjects[0] as? MarkerView
            }
            
            return nil
        #endif
    }

Types that are pointed to are not bridged. For example, NSString ** comes over to Swift as AutoreleasingUnsafeMutablePointer<NSString?>, not AutoreleasingUnsafeMutablePointer<String?>.

https://developer.apple.com/library/content/documentation/Swift/Conceptual/BuildingCocoaApps/InteractingWithCAPIs.html

[liuxuan30]

@thierryH91200 what's the cause? I don't see any error on my side.

[surayashivji]

Worked with that fix! Thanks @thierryH91200 and @liuxuan30

[thierryH91200]

Actually I do not know but I have encountered this problem
I did not do anything extraordinary
Can be a clean build or something else
Without answer