ios - 未调用 messageComposeViewController didFinishWithResult 委托(delegate)方法

Question

我有一个显示 MFMessageComposeViewController 的 View Controller “Paircontroller”，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:^{
}];

这个 View Controller 的界面如下所示:

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

@end

在 View Controller 的实现中，我定义了委托(delegate)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，没有调用委托(delegate)方法(没有命中断点，也没有命中 NSLogs)。

有人可以帮我解决为什么这不起作用吗？

谢谢!

C

Answer 1

我认为以下更改应该有效。 MFMessageComposeViewController是 UINavigationController子类，因此在您的原始代码中设置 UINavigationControllerDelegate对自己。

mcontr.messageComposeDelegate = self;