Question

我有以下在didSelectRowAtIndexPath中调用的代码。问题是，当我单击取消按钮时，它会提示保存草稿或丢弃。但是当我点击其中任何一个时，视图都不会被忽略。我在之前的iOS 5应用程序中使用了相同的代码并且它被解雇了。有任何想法吗？我在界面中有MFMailComposeViewController委托协议。

    if (indexPath.row == 0)
    {
        if([MFMailComposeViewController canSendMail])
        {

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

            [picker setSubject:@"Support"];

            NSArray *toRecipients = [NSArray arrayWithObject:@"contact@app.com"]; 

            [picker setToRecipients:toRecipients];

            NSString *emailBody = text;
            [picker setMessageBody:emailBody isHTML:NO];

            [self presentModalViewController:picker animated:YES];
        }
    }

Answer 1

使用：

dismissViewControllerAnimated:completion:

从IOS 6.0中弃写：

将此方法添加到您的班级：

-(void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error { [self dismissModalViewControllerAnimated:YES]; }

玩得开心

Answer 2

可能有几个问题：

不在.h

中添加协议实现

@interface yourClass : UIViewController <MFMailComposeViewControllerDelegate>

不在.m：

中添加相关功能

-(void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:    (MFMailComposeResult)result error:(NSError*)error {
     [self dismissModalViewControllerAnimated:YES];
}

我的错误是没有设置正确的委托，但我修复了它:)现在它适用于我：
```
 picker.mailComposeDelegate = self;
```

Answer 3

“dismissModalViewControllerAnimated：”已弃用 iOS 6.0

iOS 7使用：

“dismissViewControllerAnimated：完成：”

Answer 4

我已经在这里更详细地描述了问题以及可以解决的方式：https://stackoverflow.com/a/13576408/691660

我不确定Luda是否抓住了问题的核心。无论是否指定委托都没有区别，在模态+模态MFMailComposeViewController实例的情况下不起作用。

Answer 5

Swift 实施：

确保每次执行其函数时都调用MFMailComposeViewController协议和委托。

这解决了MFMailComposeViewController未被解雇的问题。

     let subj = "Test"
     let messageBody = "Test"
     let toRecipents = ["example@xyz.com"]
     let mc: MFMailComposeViewController = MFMailComposeViewController()
     mc.mailComposeDelegate = self
     mc.setSubject(subj)
     mc.setMessageBody(messageBody, isHTML: true)
     mc.setToRecipients(toRecipents)
     self.present(mc, animated: true, completion: nil)

MFMailComposeViewController没有解雇

5 个答案: