两个 ModalViewController

问：

我有一个 navigationController，我从中启动一个 ModalViewController。 在这个 ModalViewController 中，我将显示 MailComposer，它本身就是另一个 ModalViewController。

现在，如果用户点击发送按钮，则 MailComposerView 以及另一个 ModalViewController 也应该被关闭。为此，我在 mailComposerController 中调用了一个委托方法。

现在只有 MailComposerView 将被关闭，但不会关闭另一个 ModalViewController，我收到以下错误消息

attempt to dismiss modal view controller whose view does not currently appear. self = <UINavigationController: 0x724d500> modalViewController = <UINavigationController: 0x72701f0>

你知道我会做错吗？

第一个模态视图

- (void)addList {
NSLog(@"addList");

//AddListViewController *addListViewController = [[AddListViewController alloc] init];
AddListViewController *addListViewController = [[AddListViewController alloc] initWithStyle:UITableViewStyleGrouped];
addListViewController.delegate = self;

UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:addListViewController];
navigationController.navigationBar.barStyle = UIBarStyleBlack;
navigationController.navigationBar.translucent = YES;
[self presentModalViewController:navigationController animated:YES];

[navigationController release];
[addListViewController release];    }

在调用 MailView 的 AddListViewController 中

MFMailComposeViewController *mailComposer = [[MFMailComposeViewController alloc] init];
    mailComposer.mailComposeDelegate = self;

    NSString *subject = [NSString stringWithFormat:@"Group invite for groupname: %@", @"mhm"];
    [mailComposer setSubject:subject];

    // Fill out the email body text
    NSString *emailBody = @"This is an group invite bla bla";
    [mailComposer setMessageBody:emailBody isHTML:NO];

    [self presentModalViewController:mailComposer animated:YES];
    [mailComposer release]; 

在 mailComposerController 方法中

[self.navigationController dismissModalViewControllerAnimated:YES];
[self.delegate finishAddList:checkmark andListName:listName.text];

在 finsihAddList 委托中

[self dismissModalViewControllerAnimated:YES];