未接收从MFMailComposer发送的附件

Question

我正尝试在iPad上发送一封带有.csv附件的电子邮件。我使用的MFMailComposer给出了很多例子，如下所示。发送电子邮件时，我可以在MFMailComposer窗口中看到正确的文件附件，但当我收到电子邮件时，没有任何附件。任何关于我可能做错了什么的指导都将不胜感激。谢谢您抽时间见我,

if ([MFMailComposeViewController canSendMail]) {

    MFMailComposeViewController *mailViewController = [[MFMailComposeViewController alloc] init];
    mailViewController.mailComposeDelegate = self;
    [mailViewController setSubject:[NSString stringWithFormat:@"Results for Participant %d.", [delegate participantNumber]]];
    [mailViewController setMessageBody:[NSString stringWithFormat:@"The results for Participant %d in Study: %@ are as follows:", [delegate participantNumber], [[delegate getAccountData:([delegate accountItems] * [delegate accountNumberInUse])] description]] isHTML:NO];

    NSData *textData = [[NSData alloc] initWithContentsOfFile:dataFileName];
    [mailViewController addAttachmentData:textData mimeType:@"text/csv" fileName:[NSString stringWithFormat:@"Participant_Info_#%d.csv", [delegate participantNumber]]];

    [self presentModalViewController:mailViewController animated:YES];
    [mailViewController release];

} 

Answer 1

检查textData变量的内容，dataFileName还需要包含文件的完整系统路径，而不仅仅是它的名称！

NSString *dataFilePath = [[NSBundle mainBundle] pathForResource:dataFileName ofType:nil];