XCode 6.1 NSString.boundingRectWithSize Compile Error

Question

After I updated Xcode to 6.1 I get a couple of Compiler errors for my existing project.

I defined attributes like

let styleAttriutes = [
  NSFontAttributeName : UIFont(...),
  NSForgeroundColorAttributeName : UIColor.blackColor()
]

Error: "Could not find an overload for 'init' that accepts the supplied arguments"

So I declared the inferred Dictionary explicit adding : [NSString : Any] since all the key constants are of type NSString and we have different values: UIFont / UIColor and AnyObject is also not allowed.

let styleAttriutes : [NSString : Any] = [ ...

Now the compiler is happy in this point.

The defined attribues are used in

text.boundingRectWithSize(size: CGSize, options: NSStringDrawingOptions, attributes: [NSObject : AnyObject!], context: NSStringDrawingContext!)

Since attributes of type [NSObject:AnyObject!] are expected but I hand over attribues of type [NSString : Any] the compiler complains:

Error: "'NSString' is not identical to 'NSObject'"

I tried to cast it using attributes as [NSObject : AnyObject] but then I get runtime error.

Fatal Error: "Can't unsafeBitCast between types of differenz sizes".

Any suggestions?

Answer 1

I guess you're using UIFont's init method which returns an optional (i.e. can return nil) since Xcode 6.1.

So try replacing UIFont(...) with UIFont(...)!.