无法将“MyClass”类型的值分配给“MFMailComposeViewControllerDelegate！”类型的值

Question

我正在尝试在 iOS 中通过以下方式发送电子邮件：

var picker = MFMailComposeViewController()
picker.mailComposeDelegate = self
picker.setSubject("Mic Data")

var messageBody = NSMutableString()

for var index = 0; index<array.count; index++ {
    messageBody.appendString(String(format: "%@\n", arguments: [array.objectAtIndex(index) as! String]))
}

picker.setMessageBody(messageBody as String, isHTML: false)

presentViewController(picker, animated: true, completion: nil)

但我在picker.mailComposeDelegate = self 线上遇到错误。但它应该工作。我以这种方式设置了委托class MainTableViewController: UITableViewController, MFMessageComposeViewControllerDelegate 并使用了委托方法：

func messageComposeViewController(controller: MFMessageComposeViewController!, didFinishWithResult result: MessageComposeResult) {
    self.dismissViewControllerAnimated(true, completion: nil)
}

我做错了什么？

Answer 1

您在班级中添加了MFMessageComposeViewControllerDelegate，而不是MFMailComposeViewControllerDelegate。容易犯错误。