ios - 从共享表 (ios) 设置电子邮件发件人和收件人

Question

目标:实现一个包含 Gmail 作为选项的共享表 (UIActivityViewController)，并设置收件人和主题

问题:设置主题有效，但设置收件人(forKey:“to”)会使程序崩溃。

我希望能够设置共享表电子邮件客户端的发件人和收件人字段，但到目前为止我一直找不到任何方法可以做到这一点。感谢您的帮助!

相关代码:

let email = ["bob@bobsCompany.com"]
let activityVC = UIActivityViewController(activityItems: [""], applicationActivities: nil)

activityVC.excludedActivityTypes = excludedActivity

activityVC.setValue("Subject Title", forKey: "subject")

activityVC.setValue(email[0], forKey: "to")

activityVC.popoverPresentationController?.sourceView = self.view
self.presentViewController(activityVC, animated: true, completion: nil)

Answer 1

您只能为 UIActivityViewController 设置 Subject。程序崩溃是因为没有“to”键。如果要设置收件人和发件人字段，则必须使用 MailMFComposeViewController。

    if !MFMailComposeViewController.canSendMail()
    {
      let alertMsg = UIAlertController(title: "Test", message: "Mail services not available.", preferredStyle: UIAlertControllerStyle.Alert)
      alertMsg.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.Default, handler: nil))
      self.presentViewController(alertMsg, animated: true, completion: nil)
    }
    else
    {
      let composeVC = MFMailComposeViewController()
      composeVC.mailComposeDelegate = self

      // Configure the fields of the interface.
      composeVC.setToRecipients(["mail@egmail.com"])
      composeVC.setSubject("Subject)
      composeVC.setMessageBody("Hi.", isHTML: false)

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