MFMailComposeViewController發送狀態

Question

有什麼辦法從MFMailComposeViewController獲取狀態嗎？ 可以說我正在發送一個包含20個圖像的電子郵件，我想顯示一些負載，然後在發送完成後隱藏加載後。

Answer 1

否。一旦用戶選擇發送電子郵件並在應用程序中調用委託方法，則電子郵件將位於等待由某個後臺郵件守護程序發送的發件箱中。沒有API來獲取這種電子郵件的狀態。即使郵件因某種原因無法發送，應用程序也無法獲取此信息。

Answer 2

try the delegate methods may be it help you. 


#pragma mark - MailComposeController 

- (void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error 
{ 
    switch (result) 
    { 
     case MFMailComposeResultCancelled: 
      NSLog(@"Mail cancelled: you cancelled the operation and no email message was queued."); 
      break; 
     case MFMailComposeResultSaved: 
      NSLog(@"Mail saved: you saved the email message in the drafts folder."); 
      break; 
     case MFMailComposeResultSent: 
      NSLog(@"Mail send: the email message is queued in the outbox. It is ready to send."); 
      break; 
     case MFMailComposeResultFailed: 
      NSLog(@"Mail failed: the email message was not saved or queued, possibly due to an error."); 
      break; 
     default: 
      NSLog(@"Mail not sent."); 
      break; 
    } 

}