无法关闭MFMailComposeViewController，委托未调用 [英] Unable to dismiss MFMailComposeViewController, delegate not called

问题描述

我从 UITableViewController 调用 MFMailComposeViewController 。
问题是当我在邮件撰写窗口中选择取消或发送按钮时，从不调用委托方法：

I am calling MFMailComposeViewController from a UITableViewController. Problem is the delegate method is never called when I select Cancel or Send button in Mail compose window:

mailComposeController:(MFMailComposeViewController*)controllerdidFinishWithResult 

这是表视图类：

@implementation DetailsTableViewController
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    if (indexPath.section==0 && indexPath.row==4) {
        //SEND MAIL
        MFMailComposeViewController *controller = [[MFMailComposeViewController alloc] init];
        controller.mailComposeDelegate = self;
        if ([MFMailComposeViewController canSendMail]) {
            [controller setSubject:[NSString stringWithFormat:@"Ref %@",[item objectForKey:@"reference"]]];
            [controller setMessageBody:@" " isHTML:NO]; 
            [controller setToRecipients:[NSArray arrayWithObject:[item objectForKey:@"email"]]]; 
            [self presentModalViewController:controller animated:YES];
        }
        [controller release];       
    }
}

- (void)mailComposeController:(MFMailComposeViewController*)controllerdidFinishWithResult:(MFMailComposeResult)result error:(NSError*)error {
    // NEVER REACHES THIS PLACE
    [self dismissModalViewControllerAnimated:YES];
    NSLog (@"mail finished");
}

应用程序不会崩溃。按下取消或发送按钮后，构建窗口将停留在屏幕上并禁用按钮。我可以按Home键退出应用程序。

The application doesn't crash. After the Cancel or Send button is pressed, the Compose Window stays on the screen with buttons disabled. I can exit application pressing Home key.

我可以打开TableView的其他模态视图而不是MailCompose。

I am able to open other Modal Views form TableView but not MailCompose.

推荐答案

确保使用

controller.mailComposeDelegate = self;

而不是

controller.delegate = self;

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