ios - 无法将类型 'MyClass' 的值分配给类型 'MFMailComposeViewControllerDelegate!' 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)

但是我在行 picker.mailComposeDelegate = self 上遇到错误。但它应该工作。我以这种方式设置委托(delegate) class MainTableViewController: UITableViewController, MFMessageComposeViewControllerDelegate 并使用委托(delegate)方法:

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

我做错了什么？

Answer 1

您将 MFMessageComposeViewControllerDelegate 添加到您的类中，而不是 MFMailComposeViewControllerDelegate。容易犯的错误。