cocoa-touch - objective-c -通过MFMailComposeViewController的附件未显示

Question

我正在尝试从iOS应用程序附加wav文件，但是即使在组合邮件中可见附件，附件也无法传递。

以下是相关代码:

if ([MFMailComposeViewController canSendMail]) {
    MFMailComposeViewController* controller = [[MFMailComposeViewController alloc] init];
    controller.mailComposeDelegate = self;
    [controller setSubject:NSLocalizedString(@"mailTopic", nil)];
    [controller setMessageBody:NSLocalizedString(@"mailBody", nil) isHTML:YES];
    NSString *wavPath = [self exportAssetAsWaveFormat:self.myRec.soundFilePath]; // CAF->Wav export

    if (wavPath != nil) {
        NSLog(@"wavPath: %@", wavPath);
        NSData *recData = [NSData dataWithContentsOfFile:wavPath];
        NSString *mime = [self giveMimeForPath:wavPath];
        [controller addAttachmentData:recData mimeType:mime fileName:@"MySound.wav"];
        [self presentModalViewController:controller animated:YES];
        [controller release];
    }
}


-(NSString *) giveMimeForPath:(NSString *)filePath {
    NSURL* fileUrl = [NSURL fileURLWithPath:filePath];
    NSURLRequest* fileUrlRequest = [[NSURLRequest alloc] initWithURL:fileUrl cachePolicy:NSURLCacheStorageNotAllowed timeoutInterval:.1];
    NSURLResponse* response = nil;

    [NSURLConnection sendSynchronousRequest:fileUrlRequest returningResponse:&response  error:nil];
    NSString* mimeType = [response MIMEType];
    NSLog(@"MIME: %@", mimeType);
    [fileUrlRequest release];

    return mimeType;
}

NSLog结果:

NSLog(@“wavPath:％@”，wavPath); ->“wavPath:/var/mobile/Applications/71256DCA-9007-4697-957E-AEAE827FD97F/Documents/MySound.wav”

NSLog(@“MIME:％@”，mimeType); ->“MIME:音频/音频”

文件路径接缝正常(请参阅NSLog数据)，并且mime类型设置为“audio / wav”。

Answer 1

错误是当我用它创建NSData时，wav文件不是100％写入的。.duuuh

谢谢你们的努力