Question

可能重复：
Action sheet doesn't display when the MFMailComposeViewController's cancel button is tapped

我已根据Apple提供的代码示例在我的应用中实现了标准邮件功能。

我正在设置代理如下：

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

我正在实施

- (void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error

点击发送按钮调用委托，一切正常。但是，点击“取消”按钮不会调用委托，它只会使视图变暗;应用程序挂在那里。

在这里阅读了类似的主题后，我一直认为视图可能因为某种原因而在屏幕外，这在我看来是无法理解的。请注意，视图是以编程方式创建的，并且未使用xib文件。

有什么想法或想法吗？

Answer 1

您需要实施mailComposeController:didFinishWithResult:error委托。并且您将关闭显示您的邮件视图的视图。如果您已将邮件视图作为modalView打开，则解除此问题的方法是 -

- (void)mailComposeController:(MFMailComposeViewController*)controller 
          didFinishWithResult:(MFMailComposeResult)result
                        error:(NSError*)error 
{ 
    if(error) NSLog(@"ERROR - mailComposeController: %@", [error localizedDescription]);
    [self dismissModalViewControllerAnimated:YES];
    return;
}

Answer 2

对您有所帮助

- (void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error 
{   
    // Notifies users about errors associated with the interface
    switch (result)
    {
        case MFMailComposeResultCancelled:
            //NSLog(@"Result: canceled");
            break;
        case MFMailComposeResultSaved:
            //NSLog(@"Result: saved");
            break;
        case MFMailComposeResultSent:
        {
            UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Result" message:@"Mail Sent Successfully" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
            [alert show];
            [alert release];
        }
            break;
        case MFMailComposeResultFailed:
            //NSLog(@"Result: failed");
            break;
        default:
            //NSLog(@"Result: not sent");
            break;
    }
    [self dismissModalViewControllerAnimated:YES];
}

Answer 3

尝试添加简单的委托：

[picker setDelegate:self];

MFMailComposeViewController的委托不处理CANCEL按钮

3 个答案: