iOS Developer Zone

This code snippet is a bit longer than usual but it is really useful. It can be added to a view controller to allow sending of mail to a fixed address (although the user can edit it). It could be used for sending feedback from your app.

#import <MessageUI/MessageUI.h>
// Adopt protocol: MFMailComposeViewControllerDelegate

/**
 * @brief Sends mail to a hard-coded address.
 */
- (void)sendMail
{
    if([MFMailComposeViewController canSendMail])
    {
        MFMailComposeViewController* mailer = [[MFMailComposeViewController alloc] init];
        NSString* to = [NSString stringWithFormat:@"%@@%@", @"snippets", @"iosdeveloperzone.com"];
        [mailer setToRecipients:[NSArray arrayWithObject:to]];
        [mailer setSubject:@"Snippet Feedback"];
        [mailer setMessageBody:@"Nice snippet!" isHTML:NO];
        mailer.mailComposeDelegate = self; 
        [self presentModalViewController:mailer animated:YES];
        
    }  
    else
    {
        NSLog(@"Can't send mail");
    }
}

// MARK: -
// MARK: MFMailComposeViewControllerDelegate
- (void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error
{
    UIViewController* parent = controller.parentViewController;
    [parent dismissModalViewControllerAnimated:YES];
    NSString* message = nil;
    switch(result)
    {
        case MFMailComposeResultCancelled:
            message = @"Not sent at user request.";
            break;
        case MFMailComposeResultSaved:
            message = @"Saved";
            break;
        case MFMailComposeResultSent:
            message = @"Sent";
            break;
        case MFMailComposeResultFailed:
            message = @"Error";
    }
    NSLog(@"%s %@", __PRETTY_FUNCTION__, message);
}