Swift UIPasteboard not copying PNG

Question

My problem is really odd. In the simulator the .png copies to clipboard fine and I can paste the image in the Contacts app on Simulator. But when I put the app on the phone,

Answer 1

Make sure the code runs fine in your host app (not a keyboard extension app). For example, check if the read image has the same resolution:

    //the Pasteboard is nil if full access is not granted
    let pbWrapped: UIPasteboard? = UIPasteboard.generalPasteboard()
    if let pb = pbWrapped {
        var type = UIPasteboardTypeListImage[0] as! String
        if (count(type) > 0) && (image != nil) {
            pb.setData(UIImagePNGRepresentation(image), forPasteboardType: type)
            var readDataWrapped: NSData? = pb.dataForPasteboardType(type)
            if let readData = readDataWrapped {
                var readImage = UIImage(data: readData, scale: 2)
                println("\(image) == \(pb.image) == \(readImage)")
            }
        }
    }

If the pasteboard object is nil in your keyboard app that means you haven't provided full access to the keyboard: Copying and pasting image into a textbook in simulator