Objective C dismissViewControllerAnimated move last view down - objective-c

Question

I have two ViewController
VC1 adding VC2 as an subview to itselfe.
VC2 has a UIButton, which is calling the follow Code:
if([MFMailComposeViewController canSendMail]) {
MFMailComposeViewController *mailer = [[MFMailComposeViewController alloc] init];
mailer.mailComposeDelegate = self;
[mailer setSubject:[NSString stringWithFormat:#"BlaBla."]];
NSArray *toRecipients = [NSArray arrayWithObjects:#"blabla#gmail.com", nil];
[mailer setToRecipients:toRecipients];
NSString *emailBody = [NSString stringWithFormat:#"Testtext1"];
[mailer setMessageBody:emailBody isHTML:NO];
[self presentViewController:mailer animated:YES completion:nil];
}
else {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Fehler" message:#"Ihr Gerät unterstützt die gewünschte Funktion nicht" delegate:nil cancelButtonTitle:#"Ok" otherButtonTitles:nil];
[alert show];
}
After the Mail is done it calls the following:
-(void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error{
switch (result)
{
case MFMailComposeResultCancelled:
{ UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Hinweis"
message:#"Vorgang abgebrochen, es wurde keine E-Mail versendet."
delegate:self
cancelButtonTitle:#"Ok"
otherButtonTitles: nil];
[alert show];
}
break;
case MFMailComposeResultSaved:
{ UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Hinweis"
message:#"Ihre E-Mail wurde gespeichert."
delegate:self
cancelButtonTitle:#"Ok"
otherButtonTitles: nil];
[alert show];
}
break;
case MFMailComposeResultSent:
{ UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Hinweis"
message:#"Ihre E-Mail wird versendet."
delegate:self
cancelButtonTitle:#"Ok"
otherButtonTitles: nil];
[alert show];
}
break;
case MFMailComposeResultFailed:
{ UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Hinweis"
message:#"Vorgang abgebrochen, die E-Mail konnte nicht gesendet werden."
delegate:self
cancelButtonTitle:#"Ok"
otherButtonTitles: nil];
[alert show];
}
break;
default:
{ UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Hinweis"
message:#"E-Mail wurde nicht gesendet."
delegate:self
cancelButtonTitle:#"Ok"
otherButtonTitles: nil];
[alert show];
}
break;
}
[self dismissViewControllerAnimated:YES completion:nil];}
All works fine, but all UIButtons etc in VC2 are now moved, I guess, 20 pixels down.
I cant Imagin why, I guess the problem is I adding a ViewController as Subview to an other ViewController and calling there the methode. But I cant imagin how to solve the issue.

Answer 1

I had similar problem but parent view was moved 20 px up.
Solution was based on changing "Wants full screen". I had to set this values to YES but not to all child view controllers.