"Cannot Assign Value of Type 'String' to Type 'Anyobject'", Swift 3, Xcode 8 Beta 6

Cannot assign value of type 'String' to type 'AnyObject?' , Swift 3, Xcode 8 beta 6

In b6, String no longer magically bridges to NSString. String is not a class; it's a struct. You need to do the bridging by hand:

dict["key"] = "value" as AnyObject

The fact that is still seems to be bridging is likely a bug and should be reported.

It goes without saying that [String: AnyObject] and [String: Any] should be used as little as possible in your code.

(Make sure to follow the link Hamish provides in the comments below.)

Cannot assign a value of type '[NSObject : AnyObject]' to a value of type '[String : AnyObject]!'

While assigning the dictionary to constant variable, you don't required to type cast because you are already creating dictionary of type [String : AnyObject] which required for assignment to the UITextView.linkTextAttributes.

let attributes = [NSForegroundColorAttributeName:cell.textView!.tintColor,NSUnderlineStyleAttributeName:1]
cell.textView!.textView.linkTextAttributes = attributes

AnyObject not working in Xcode8 beta6?

The warning works as intended: the false return of TestStruct() is AnyObject, however, does not

The prior version of this answer perceived the warning,

'is' test is always true

as the bug, and contained some discussion as to why this perceived buggy warning would manifest itself. That TestStruct() is AnyObject evaluated to false at runtime, however, was perceived as expected behaviour.

Given the comments to the bug report filed by the OP (SR-2420), it seems the situation is the reverse: since Xcode 8/beta 6, the is test should always evaluate to true, and the bug the OP:s post is the fact that TestStruct() is AnyObject evaluates to false during runtime.

Joe Groff writes:

This is correct, because everything bridges to AnyObject now.

...

is/as AnyObject always succeed for all types now. It's behaving
as intended.

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The new SwiftValue box for conversion from Swift values to Obj-C objects

(for additional details, see discussion in the comments below, thanks @MartinR)

It seems as if Swift values that are not explicitly implemented to be bridgeable to Obj-C objects via e.g. conformance to _ObjectiveCBridgeable (see e.g. the following Q&A for details regarding _ObjectiveCBridgeable), will instead automatically make use of the new SwiftValue box to allow conversion to Obj-C objects.

The initial commit message for swift/stdlib/public/runtime/SwiftValue.mm reads:

Runtime: Implement an opaque 'SwiftValue' ObjC class to hold bridged values

If there's no better mapping for a Swift value into an Objective-C
object for bridging purposes, we can fall back to boxing the value in
a class. This class doesn't have any public interface beyond being
NSObject-conforming in Objective-C, but is recognized by the Swift
runtime so that it can be dynamically cast back to the boxed type.

Cannot assign value of type String to type UILabel

You need to pass the String instead of setting text to label, because when you correct it and set like this sendToDetailViewController.messageLabelDos.text = sendingText, you will get nil error because messageLabelDos is not initialize yet, so try like this. Create one string instance in DetailViewController and use that inside prepareForSegue for passing String and then use that String instance in viewDidLoad to assign Label to text.

class ViewController: UIViewController { 

    //Your other methods

    func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) { 
        if segue.identifier == "SendDataSegue" {
            if let sendToDetailViewController = segue.destinationViewController as? DetailViewController {
                var sendingText = metadataObj.stringValue
                sendToDetailViewController.messageDos = sendingText
            }
        }
    }
}

Inside DetailViewController

var messageDos: String = ""

override func viewDidLoad() {
    super.viewDidLoad()
    self.messageLabelDos.text = messageDos
}

Cannot assign value of type '() - Void' to type '(() - Void)!'

It seems your issue is related to this:
SE-0103

Try chaging the method header of your addButton(_:action:) to:

public func addButton(_ title:String, action:@escaping ()->Void)->SCLButton {

The diagnostic messages from new betas are so confusing and inadequate as usual, but making your property simply non-Optional var action:()->Void = {} will give you a little more useful info.

Cannot assign value of type '(UIViewController?, NSError?) - Void' to type '((UIViewController?, Error?) - Void)?'

sorry, the answer was as simple as only had to change this line:

self.localPlayer.authenticateHandler = {(viewController: UIViewController?, error: NSError?) -> Void in

to

self.localPlayer.authenticateHandler = {(viewController: UIViewController?, error: Error?) -> Void in

my bad! sorry!

Unable to compile AWS CustomIdentityProvider on xcode 8 beta 6

Cast to NSDictionary instead of a Swift Dictionary:

return AWSTask(result: tokens! as NSDictionary)

Cannot convert value of type NSMutableDictionary? to expected argument type [NSObject: AnyObject]!

You need to make a variable to hold your NSMutableDictionary then pass it to send() method.

let dictionary = (builder?.build())! as NSMutableDictionary
tracker?.send(dictionary as [NSObject: AnyObject]!)

UPDATE: Another clean way to use in Swift 3

guard let tracker = GAI.sharedInstance().defaultTracker else { return }
tracker.set(kGAIScreenName, value: "ViewController")
guard let builder = GAIDictionaryBuilder.createScreenView() else { 
return }
tracker.send(builder.build() as [NSObject:AnyObject])

Value of type String to type [String] in Swift

It's a simple fix. If you're trying to start the array over and only have that one value (carName.text) stored inside of it, do this: pickOption = [carName.text] If you're trying to add carName.text into the array, do this: pickOption.append("\(carName.text)". Good luck with your project!

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