ios - Swift 从滑动菜单中关闭邮件 Controller

Question

我在使用 MFMailComposer 时遇到了问题。我已经使用示例 Swift Code 遵循了 iOS 开发人员指南.

我还查看了本网站上的以下类似问题:

swift - dismissing mail view controller from Sprite Kit

MFMailComposeViewController in Swift does not dismiss

链接的框架和库:MessagesUI.framework

import MessageUI

class FHCLLeftMenuViewController: FHBaseViewController,UITableViewDelegate,UITableViewDataSource,MFMailComposeViewControllerDelegate 

当我点击应用左侧滑动菜单中的“支持”文本时，“邮件”应用出现，我撰写了一封电子邮件并单击“发送”。该电子邮件出现在我的收件箱中，但 Controller 在发送邮件后并未自动关闭。当我尝试删除草稿并且必须关闭应用程序并重新启动时，也会发生这种情况。

        case kFHCLMenuTagSupport:
        //PT DashBoard

        if !MFMailComposeViewController.canSendMail() {
            print("Mail services are not available")
            return
        }

        let composeVC = MFMailComposeViewController()
        composeVC.mailComposeDelegate = self

        // Configure the fields of the interface.
        composeVC.setToRecipients(["support@example.com"])
        composeVC.setSubject("Client Support")
        composeVC.setMessageBody("Some text here.", isHTML: false)



        // Present the view controller modally.
        self.presentViewController(composeVC, animated: true, completion: nil)

        func mailComposeController(controller: MFMailComposeViewController,
                                   didFinishWithResult result: MFMailComposeResult, error: NSError?) {
            // Check the result or perform other tasks.

            // Dismiss the mail compose view controller.
            self.dismissViewControllerAnimated(true, completion: nil)

        }
        break

我也尝试过这种变体以返回到应用程序的主仪表板，结果相同:

     case kFHCLMenuTagSupport:
        //PT DashBoard
        let storyboard = UIStoryboard(name: "Client", bundle: nil)

        // Create View Controllers
        let mainPage:FHClientDashBoardViewController = storyboard.instantiateViewControllerWithIdentifier("FHClientDashBoardViewController") as! FHClientDashBoardViewController
        let mainPageNav = UINavigationController(rootViewController: mainPage)



        if !MFMailComposeViewController.canSendMail() {
            print("Mail services are not available")
            return
        }

        let composeVC = MFMailComposeViewController()
        composeVC.mailComposeDelegate = self

        // Configure the fields of the interface.
        composeVC.setToRecipients(["support@example.com"])
        composeVC.setSubject("Client Support")
        composeVC.setMessageBody("Some text here.", isHTML: false)



        // Present the view controller modally.
        self.presentViewController(composeVC, animated: true, completion: nil)

        func mailComposeController(controller: MFMailComposeViewController,
                                   didFinishWithResult result: MFMailComposeResult, error: NSError?) {
            // Check the result or perform other tasks.

            // Dismiss the mail compose view controller.
            // self.dismissViewControllerAnimated(true, completion: nil)
            self.mm_drawerController.setCenterViewController(mainPageNav, withCloseAnimation: true, completion: nil)
        }

        break

任何帮助将不胜感激。

Answer 1

dismissViewControllerAnimated(_:completion:) 函数关闭调用该函数的 View Controller 。在这种情况下，由于您在 self 上调用它，它会尝试关闭 FHCLLeftMenuViewController。这可以通过在 MFMailComposeViewController 上调用 dismissViewControllerAnimated(_:completion:) 来轻松解决。

为此，只需将 mailComposeController(controller:didFinishWithResult:error:) 函数替换为以下内容(它在 Apple 自己的文档中也以这种方式出现):

func mailComposeController(controller: MFMailComposeViewController, didFinishWithResult result: MFMailComposeResult, error: NSError?) {
    // Check the result or perform other tasks.

    // Dismiss the mail compose view controller.
    controller.dismissViewControllerAnimated(true, completion: nil)
}