iOS MessageUI 发送邮件功能

1 先导入头文件

import MessageUI

2 写逻辑

if MFMailComposeViewController.canSendMail() {
                let controller = MFMailComposeViewController()
                //设置代理
                controller.mailComposeDelegate = self
                //设置主题
                controller.setSubject(NSLocalizedString("Contact Us", comment: "Contact Us"))
                //设置收件人
                controller.setToRecipients(["hangge@qq.com"])
//                //设置抄送人
//                controller.setCcRecipients(["b1@hangge.com","b2@hangge.com"])
//                //设置密送人
//                controller.setBccRecipients(["c1@hangge.com","c2@hangge.com"])

                //添加图片附件
    //            var path = NSBundle.mainBundle().pathForResource("hangge.png", ofType: "")
    //            var myData = NSData(contentsOfFile: path!)
    //            controller.addAttachmentData(myData, mimeType: "image/png", fileName: "swift.png")

                //设置邮件正文内容（支持html）
                controller.setMessageBody("我是邮件正文", isHTML: false)

                //打开界面
                self.present(controller, animated: true, completion: nil)
            }else{
                let tip = NSLocalizedString("本设备不能发送邮件", comment: "")
                print("\(tip)")
                ProgressHUD.showError(tip, interaction: true)
            }

3 写代理

    func mailComposeController(_ controller: MFMailComposeViewController, didFinishWith result: MFMailComposeResult, error: Error?) {
//        controller.dismiss(animated: true, completion: nil)
       self.dismiss(animated: true, completion: nil)
       switch result {
       case .cancelled:
           let tip = NSLocalizedString("邮件已取消", comment: "")
           print("\(tip)")
           ProgressHUD.showError(tip, interaction: true)
           break
       
       case .saved:
           let tip = NSLocalizedString("邮件已保存", comment: "")
           print("\(tip)")
           ProgressHUD.show(tip, interaction: true)
       case .sent:
           let tip = NSLocalizedString("邮件已发送", comment: "")
           print("\(tip)")
           ProgressHUD.showSuccess(tip, interaction: true)
       case .failed:
           let tip = NSLocalizedString("邮件发送失败", comment: "")
           print("\(tip)")
           ProgressHUD.showError(tip, interaction: true)
       @unknown default:
           let tip = NSLocalizedString("邮件没有发送", comment: "邮件没有发送")
           print("\(tip)")
           ProgressHUD.showError(tip, interaction: true)
       }
   }