如何使用 MFMailComposeViewController

Question

我在我的应用程序中使用 MFMailComposeViewController ，邮件发送部分似乎没问题。 但是当我离开邮件应用程序时，事情就出了问题：

- one toolbar (UIToolbar object) has disappeared.
- one pointer (UIImageView*) has become nil, without me doing anything for that to happen.

换句话说，尽管我不希望它改变，但呼叫环境发生了变化。 我的错误可能在哪里？

这是我的代码，以防有人看到错误：

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


-(IBAction)sendAsEMail {
MFMailComposeViewController *mailComposeViewController=[[MFMailComposeViewController alloc] init];
mailComposeViewController.mailComposeDelegate=self;
[mailComposeViewController setSubject:@"Mail subject"];
[mailComposeViewController setMessageBody:@"This is for you !" isHTML:NO]; 
[mailComposeViewController addAttachmentData:
 [NSData dataWithContentsOfFile:[[My_ViewController getDocDir] stringByAppendingPathComponent:
                                 [pictureNames objectAtIndex:userItemSelected]]]
                                    mimeType:@"image/png" fileName:@"Picture.png"];
if (mailComposeViewController) [self presentModalViewController:mailComposeViewController animated:YES];
[mailComposeViewController release];
}

感谢您提供任何相关信息。

Answer 1

试试这个链接，它详细解释了

1. 添加框架
2. 然后.h文件头文件
3. 然后.m文件邮件代码

检查