How to remove association from a view and a view controller? - iphone

Question

When I try to show the facebook share after having sent an email (using MFMailComposeViewController) I get this error:
A view can only be associated with at most one view controller at a
time! View [EAGLView] is associated with [EmailViewController]. Clear
this association before associating this view with [FacebookView].'
[EmailViewController removeFromParentViewController]; Does nothing
EmailViewController.view = nil; Causes a white screen, even though the email form is long gone.
How to make it forget that I ever sent and email and make the view hierarchy go back to how it was before? The facebook share works if I haven't sent an email.
-(IBAction)ShowEmailForm:(char*)pSubject :(char*)pBody :(char*)pTo
{
Class mailClass = (NSClassFromString(#"MFMailComposeViewController"));
if (mailClass != nil)
{
if ([mailClass canSendMail])
{
self.view = eaglView;
MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];
picker.mailComposeDelegate = self;
[picker setSubject:[NSString stringWithFormat:#"%s", pSubject]];
// Set up recipients
if( pTo != nil )
{
NSArray *toRecipients = [NSArray arrayWithObject:[NSString stringWithFormat:#"%s", pTo]];
[picker setToRecipients:toRecipients];
}
// Fill out the email body text
[picker setMessageBody:[NSString stringWithFormat:#"%s",pBody] isHTML:YES];
[self presentViewController:picker animated:YES completion:^(){}];
[picker release];
}
}
}
// Dismisses the email composition interface when users tap Cancel or Send. Proceeds to update the message field with the result of the operation.
- (void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error
{
[self dismissViewControllerAnimated:YES completion:^(){ printf("Email form done dismissing.\n"); }];
printf("Email form dismissed.\n");
[self removeFromParentViewController];
//Email was sent.
if (result == MFMailComposeResultSent)
{
printf("Email Sent!\n");
NSString *pEmail = [self findEmailAddresses:controller.view : 0];
}
}

Answer 1

Fixed it.
Change
self.view = eaglView;
to
[eaglView addSubview:self.view];