iphone - 直接从应用程序将 mp3 文件附加到电子邮件？

Question

我正在开发一个应用程序，如果用户选择一种声音，他们可以从该应用程序通过电子邮件将其发送给自己。

附件部分“似乎”有效，但是，当我发送电子邮件时，收件人没有附件？

在 iPad/iPhone 本身上，似乎在编写时附加了它，但它不起作用？ :/

这是我使用的代码；

- (void)onSend:(id)sender{

    int nIndex;

    UIButton    *btnSender = (UIButton *)sender;
    NSLog( @"%d", btnSender.tag );

    for ( int i = 0; i < [ m_aryFileName count ]; i++ ) {

        if( i == ( btnSender.tag - 100 ) ){
            nIndex = i;
        }

    }

    NSString *strFileName = [ m_aryFileName objectAtIndex:nIndex ];
    strFileName = [ strFileName stringByAppendingString:@".mp3" ];
    NSData*     nData = [ NSData dataWithContentsOfFile:strFileName ];

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

    [pickerMail setSubject:@"myMail Attachment"];

    // Attach an image to the email
    [pickerMail addAttachmentData:nData mimeType:@"audio/mp3" fileName:strFileName ];

    // Fill out the email body text
    NSString *emailBody = @"Here is your attachment";

    [pickerMail setMessageBody:emailBody isHTML:YES];

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

}

Answer 1

试试这个代码伙伴，

NSString *strFileName = [m_aryFileName objectAtIndex:nIndex];
strFileName = [strFileName stringByAppendingString:@".mp3"];
NSURL    *fileURL = [[NSURL alloc] initFileURLWithPath:strFileName];
NSData *nData = [[NSData alloc] initWithContentsOfURL:fileURL];

MFMailComposeViewController *pickerMail = [[MFMailComposeViewController alloc] init];
pickerMail.mailComposeDelegate = self;
[pickerMail setSubject:@"myMail Attachment"];
[pickerMail addAttachmentData:nData mimeType:@"audio/mpeg" fileName:strFileName ];
NSString *emailBody = @"Here is your attachment";
[pickerMail setMessageBody:emailBody isHTML:YES];
[self presentModalViewController:pickerMail animated:YES];