messageComposeViewController didFinishWithResult委托方法未调用

Question

我有一个视图控制器“ Paircontroller”，它呈现了MFMessageComposeViewController，如下所示：

NSArray *recpts = [[NSArray alloc]initWithObjects:phone.text, nil];

MFMessageComposeViewController *mcontr = [[MFMessageComposeViewController alloc]init];
mcontr.body = @"Sign up for our app!";
mcontr.recipients = recpts;
mcontr.subject = @"hey!";
mcontr.delegate = self;
[self presentViewController:mcontr animated:YES completion:^{
}];

该视图控制器的界面如下所示：

@interface PairViewController : UIViewController<UITextFieldDelegate,CustomIOS7AlertViewDelegate, UINavigationControllerDelegate, MFMessageComposeViewControllerDelegate>

@end

在视图控制器的实现中，我定义了委托方法- (void)messageComposeViewController:(MFMessageComposeViewController *)controller didFinishWithResult:(MessageComposeResult)result

如下：

- (void)messageComposeViewController:(MFMessageComposeViewController *)controller didFinishWithResult:(MessageComposeResult)result
{
    switch (result) {
        case MessageComposeResultCancelled:
            NSLog(@"Cancelled");
            break;
        case MessageComposeResultFailed:
            NSLog(@"unknown error sending m");
            break;
        case MessageComposeResultSent:
            NSLog(@"Message sent successfully");

            break;
        default:
            break;
    }
    [self dismissViewControllerAnimated:YES completion:^{}];
}

但是，未调用委托方法（未命中断点，也未命中NSLogs）。

有人可以帮我解决为什么它不起作用吗？

谢谢！

C

Answer 1

我认为以下更改应该有效。 MFMessageComposeViewController是UINavigationController子类，因此在原始代码中，您将UINavigationControllerDelegate设置为self。

mcontr.messageComposeDelegate = self;