ios - MFMailComposeViewController 在 iOS 8 Xcode 6 中不可编辑

Question

我正在使用以下代码来显示电子邮件表。工作表出现了，但我无法编辑主题、正文。我什至不能按取消或发送按钮。这是我的实现:

class PeopleListTableViewController: UITableViewController,SWTableViewCellDelegate,UINavigationControllerDelegate,MFMailComposeViewControllerDelegate, NSXMLParserDelegate {

 func showEmailSheet(person :Person) {

        if MFMailComposeViewController.canSendMail() {

            let mailViewController = MFMailComposeViewController()
            mailViewController.mailComposeDelegate = self

            mailViewController.setToRecipients([person.email!])

            self.presentViewController(mailViewController, animated: true, completion: nil)

        }
    }

我做错了什么？

Answer 1

这是我的一个项目的工作代码。请务必在 iOS 设备上使用表单，而不是在模拟器中。

import UIKit
import MessageUI

class ViewController: UIViewController, MFMailComposeViewControllerDelegate {
    @IBAction func launchEmail(sender: AnyObject) {

        var emailTitle = "Feedback"
        var messageBody = "Feature request or bug report?"
        var toRecipents = ["youraddress@gmail.com"]
        var mc: MFMailComposeViewController = MFMailComposeViewController()
        mc.mailComposeDelegate = self
        mc.setSubject(emailTitle)
        mc.setMessageBody(messageBody, isHTML: false)
        mc.setToRecipients(toRecipents)

        self.presentViewController(mc, animated: true, completion: nil)
    }

    func mailComposeController(controller:MFMailComposeViewController, didFinishWithResult result:MFMailComposeResult, error:NSError) {
        switch result.value {
        case MFMailComposeResultCancelled.value:
            println("Mail cancelled")
        case MFMailComposeResultSaved.value:
            println("Mail saved")
        case MFMailComposeResultSent.value:
            println("Mail sent")
        case MFMailComposeResultFailed.value:
            println("Mail sent failure: %@", [error.localizedDescription])
        default:
            break
        }
        self.dismissViewControllerAnimated(true, completion: nil)
    }
}