MFMailComposeViewController crash when pressing "Delete Draft" - xcode

Question

I have a button that call a MFMailComposeViewController. Sometimes, when I click "delete draft", the app crashes but sometimes it correctly dismiss the view. I can' understand why. Here is my code:
- (IBAction)openEmail:(id)sender {
if ([MFMailComposeViewController canSendMail]) {
MFMailComposeViewController *composer = [[MFMailComposeViewController alloc] init];
composer.mailComposeDelegate = (id)self;
NSArray *myEmail = [[NSArray alloc] initWithObjects:#"me#gmail.com", nil];
[composer setToRecipients:myEmail];
[self presentViewController:composer animated:YES completion:nil];
[[composer navigationBar] setTintColor:[UIColor colorWithRed:0.843 green:0.435 blue:0.435 alpha:1]];
}
else {
}
}
and this method:
- (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 send");
break;
case MFMailComposeResultFailed:
NSLog(#"Mail failed");
break;
default:
NSLog(#"Mail not sent.");
break;
}
[self dismissViewControllerAnimated:YES completion:nil];
}
Can anyone help me?

Answer 1

I used to experience this as well, and the potential problematic area in your code may be this line:
MFMailComposeViewController *composer = [[MFMailComposeViewController alloc] init];
It's likely that by the time MFMailComposeViewControllerDelegate methods are called, your composer object is deallocated. Instead, try initiating MFMailComposeViewController on a strong property, like so:
self.composer = [MFMailComposeViewController new];
You can set self.composer to nil once you have acted on the delegate methods to release the MFMailComposeViewController.

Answer 2

Have you tried:
[self presentModalViewController:_picker animated:YES];
Notice 'MODAL'?
With also:
[self dismissModalViewControllerAnimated:YES];