MFmailComposer error - ios

Question

I want to apologize in advance because I am fairly new to programming, so if I am not as specific as I can be I am sorry but I will try to explain my problem as best as I can anyways, I am creating an app that needs to have the ability to send emails and I have looked everywhere, tried every sample code I could find and nothing seems to work every time I use code I get the following error:
2013-02-03 20:23:39.372 Tones[16409:c07] Warning: Attempt to present
on
whose view is not in the window hierarchy!
This is the code I am currently using in the viewcontroller.h file:
UIViewController <MFMailComposeViewControllerDelegate>
- (IBAction)Mail:(id)sender;
and this is in my viewcontroller.m file:
- (IBAction)Mail:(id)sender {
if ([MFMailComposeViewController canSendMail]) {
MFMailComposeViewController *mail = [[MFMailComposeViewController alloc] init];
mail.mailComposeDelegate = self;
[mail setSubject:#"Subject"];
NSArray *recipient = [NSArray arrayWithObjects:#"mail#example.com", nil];
[mail setToRecipients:recipient];
NSString *body = #"body!";
[mail setMessageBody:body isHTML:NO];
[self presentModalViewController:mail animated:YES];
}
}
- (void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error
{
[self dismissModalViewControllerAnimated:YES];
}
I also get a message that says both self presentModalViewController and self dismissModalViewController is deprecated in IOS 6 so does that mean I cant use it or am I doing something wrong?
So any help on what I am doing wrong with the mail composer would be much appreciated and again im sorry if I was not specific enough thanks in advance

Answer 1

You can use presentModalViewController:animated: to show the modal viewcontroller, but it is now recommended to use the new one: presentViewController:animated:completion:. The new on owns a completion handler and you can get more control of the code. Be careful the new method required a iOS 5.0 above. If your target is iOS5.0 above, you should use the new method. And the same for dismissModalViewControllerAnimated:, use dismissViewControllerAnimated:completion: instead.

Answer 2

The warning "Warning: Attempt to present on whose view is not in the window hierarchy!" suggests the view is not connected in the Interface Builder or programmatically.
The Deprecated warnings result from Xcode checking the APIs you use in your project settings. If you set the Build Settings' IOS Deployment Target of your Xcode project to iOS 6, then any APIs (such as presentModalViewController and dismissModalViewController) that are marked by Apple as deprecated will be flagged.
Instead use presentViewController:animated:completion: and dismissViewControllerAnimated:completion:, respectively.

Answer 3

[self presentModalViewController:mail animated:YES];
can be replaced by
[self presentViewController:mail animated:YES completion:nil];
and
[self dismissModalViewControllerAnimated:YES];
by
[self dismissViewControllerAnimated:YES completion:nil];

Answer 4

Like Sudha said, use [self presentViewController:mail animated:YES/NO completion:nil];
From iOS6 onwards, presentModalViewController and dismissModalViewController are deprecated, they are used with completion, which would be nil for your case .

Answer 5

Hi you can check MFMailComposerViewController class present or not.
-(void)email{Class emailClass=(NSClassFromString(#"MFMailComposeViewController"));if emailClass!=nil)if ([emailClass canSendMail]{[self displayComposePage];
}