无法指定类型＆＃39; MyClass＆＃39;的值类型为＆＃39; MFMailComposeViewControllerDelegate！＆＃39;

Question

我正尝试在iOS中以下列方式发送电子邮件：

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)

但我在第picker.mailComposeDelegate = self行上收到错误。但它应该工作。我以这种方式class MainTableViewController: UITableViewController, MFMessageComposeViewControllerDelegate设置了委托，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

您已将MFMessageComposeViewControllerDelegate添加到您的班级而不是MFMailComposeViewControllerDelegate。容易犯错误。