iosemailsprite-kitmessageui

Send a mail programmatically in Sprite Kit


I've tried to send mails programmatically using the MessageUI framework. This is what I have in MyScene.m. When I call the method, a mail window opens. But when I cancel the mail or when I send the mail, it doesn't goes back to MyScene.

    #import <MessageUI/MessageUI.h>
    -(void)sendMail
{
    MFMailComposeViewController *mc = [[MFMailComposeViewController alloc] init];
    mc.mailComposeDelegate = self;
    [mc setSubject:@"Subject"];
    [mc setMessageBody:@"Hello!" isHTML:NO];
    [mc setToRecipients:[NSArray arrayWithObject:@"my.email@gmail.com"]];

    // Present mail view controller on screen
    [self.view.window.rootViewController presentViewController:mc animated:YES completion:NULL];

}

- (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
    [self.view.window.rootViewController dismissViewControllerAnimated:YES completion:NULL];
}

Solution

  • You are setting the scene as a delegate for MFMailComposeViewController:

    MFMailComposeViewController *mc = [[MFMailComposeViewController alloc] init];
    mc.mailComposeDelegate = self;
    

    Change it to

    mc.mailComposeDelegate = self.view.window.rootViewController;
    

    But that's of course a bad practice. SKScene is a presentation layer. You should present MFMailComposeViewController from UIViewController.

    EDIT:

    Add this code to GameSceneViewController:

    - (void)viewDidLoad {
        [super viewDidLoad];
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(sendMail) name:@"showMailComposer" object:nil];
    }
    
    -(void)sendMail
    {
        MFMailComposeViewController *mc = [[MFMailComposeViewController alloc] init];
        mc.mailComposeDelegate = self;
        [mc setSubject:@"Subject"];
        [mc setMessageBody:@"Hello!" isHTML:NO];
        [mc setToRecipients:[NSArray arrayWithObject:@"my.email@gmail.com"]];
    
        // Present mail view controller on screen
        [self.view.window.rootViewController presentViewController:mc animated:YES completion:NULL];
    
    }
    
    - (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
        [self dismissViewControllerAnimated:YES completion:NULL];
    }
    

    Call this when you want to send a mail:

    [[NSNotificationCenter defaultCenter] postNotificationName:@"showMailComposer" object:nil];