messageComposeViewController Swift 2中的錯誤

Question

以下代碼適用於Swift 1.2。 現在，我收到一個錯誤：

“MessageComposeResult類型的值沒有成員'值'”

func messageComposeViewController(controller: MFMessageComposeViewController, didFinishWithResult result: MessageComposeResult) {
    switch (result.value) {
    case MessageComposeResultCancelled.value:
        print("Message was cancelled")
        self.dismissViewControllerAnimated(true, completion: nil)
    case MessageComposeResultFailed.value:
        print("Message failed")
        self.dismissViewControllerAnimated(true, completion: nil)
    case MessageComposeResultSent.value:
        print("Message was sent")
        self.dismissViewControllerAnimated(true, completion: nil)
    default:
        break;
    }
}

為了在Swift 2中找到消息的狀態，我應該檢查結果的哪個成員？

Answer 1

在斯威夫特2， value不存在的result 。

請改用result.rawValue 。

Answer 2

使用rawValue而不是value

   switch result.rawValue {
    case MessageComposeResult.Cancelled.rawValue:
        print("Message was cancelled")
        controller.dismissViewControllerAnimated(true, completion: nil)

    case MessageComposeResult.Failed.rawValue:
        print("Message failed")
        controller.dismissViewControllerAnimated(true, completion: nil)

    case MessageComposeResult.Sent.rawValue:
        print("Message was sent")
        controller.dismissViewControllerAnimated(false, completion: nil)

    default:
        break
        controller.dismissViewControllerAnimated(true, completion: nil)
    }