Przycisk anulowania MFMessageComposeViewController nie działa

Question

Używam tego bloku do wysyłania wiadomości do kontaktów, po wysłaniu przycisku wstecz tam jest, ale kiedy go dotknę, nic się nie dzieje. Proszę mi pomóc :)

-(IBAction) InviteIt:(id) sender{ 


    if ([MFMessageComposeViewController canSendText]) { 
     MFMessageComposeViewController *messageComposer = 
     [[MFMessageComposeViewController alloc] init]; 
     messageComposer.messageComposeDelegate = self; 
     NSString *message = @"You have more body buddies than you think at: http://www.itunes.com/app/JoyChain "; 
     [messageComposer setBody:message]; 
     messageComposer.recipients = [NSArray arrayWithObjects:_itsnum, nil]; 
     messageComposer.messageComposeDelegate = self; 
     [self presentViewController:messageComposer animated:YES completion:nil]; 

    } 

} 

Answer 1

Zapomniałeś wdrożyć mailComposeController:didFinishWithResult: ...

- (void) mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error 
{ 
    switch (result) 
    { 
     case MFMailComposeResultCancelled: 
      NSLog(@"Mail cancelled"); 
      break; 
     case MFMailComposeResultSaved: 
      NSLog(@"Mail saved"); 
      break; 
     case MFMailComposeResultSent: 
      NSLog(@"Mail sent"); 
      break; 
     case MFMailComposeResultFailed: 
      NSLog(@"Mail sent failure: %@", [error localizedDescription]); 
      break; 
     default: 
      break; 
    } 

    // Close the Mail Interface 
    [controller dismissViewControllerAnimated:YES completion:nil]; 
} 

Z dokumentacji jabłoni:

// The mail compose view controller delegate method 
- (void)mailComposeController:(MFMailComposeViewController *)controller 
       didFinishWithResult:(MFMailComposeResult)result 
       error:(NSError *)error 
{ 
    [self dismissModalViewControllerAnimated:YES]; 
} 

Ale można obsługiwać wszystkie przypadki, zależy od gol ...

Answer 2

Poprawna odpowiedź to ustawienie kontrolera na messageComposeDelegate, a także określić w następujący sposób Delegat:

- (void)messageComposeViewController:(MFMessageComposeViewCont‌​roller *)controller 
       didFinishWithResult:(MessageComposeResult)result { 

    [self dismissModalViewControllerAnimated:YES]; 
    if (result == MessageComposeResultCancelled) 
    NSLog(@"Message cancelled"); 
    else if (result == MessageComposeResultSent) 
    NSLog(@"Message sent"); 
    else 
    NSLog(@"Message failed"); 
} 

@ odpowiedź Doro opiera się na nie MFMailComposeViewControllerMFMessageComposeViewController

Answer 3

Jeśli ktoś potrzebuje, metoda messageComposeDelegate języku Swift (3):

func messageComposeViewController(_ controller: MFMessageComposeViewController, didFinishWith result: MessageComposeResult) { 
    controller.dismiss(animated: true) 
} 

Answer 4

Oto odpowiedź dla Swift 4, iOS 11

case MFMailComposeResult.cancelled: 
      print("Mail cancelled"); 
      break; 
     case MFMailComposeResult.saved: 
      print("Mail saved"); 
      break; 
     case MFMailComposeResult.sent: 
      print("Mail sent"); 
      break; 
     case MFMailComposeResult.failed: 
      print("Mail sent failure: %@", error?.localizedDescription); 
      break; 
     default: 
      break; 
     } 

Answer 5

Oto odpowiedź dla Swift 4, iOS 11

func mailComposeController(_ controller: MFMailComposeViewController, didFinishWith result: MFMailComposeResult, error: Error?) { 
     print("Emailing attempt, error="+(error?.localizedDescription)!)   
     switch (result){ 
     case MFMailComposeResult.cancelled: 
      print("Mail cancelled"); 
      break; 
     case MFMailComposeResult.saved: 
      print("Mail saved"); 
      break; 
     case MFMailComposeResult.sent: 
      print("Mail sent"); 
      break; 
     case MFMailComposeResult.failed: 
      print("Mail sent failure: %@", error?.localizedDescription); 
      break; 
     default: 
      break; 
     } 
     // Close the Mail Interface 
     controller.dismiss(animated: true) 
    }