Ios 如何使用URI方案在邮件中发送附件？企业MDM设备

我现在的情况是，在EnterpriseInfra中为MDM设备开发应用程序。因此，MFMailComposeViewController将无法工作。如何使用URI方案发送附件。还有其他选择吗？？？

您需要为此创建mimeType

例如：

    MFMailComposeViewController *mc = [[MFMailComposeViewController alloc]init];
    mc.mailComposeDelegate = self;
    NSString *filePath = [[NSBundle mainBundle] pathForResource:filename ofType:extension];
    NSData *fileData = [NSData dataWithContentsOfFile:filePath];
    NSString *mimeType;
    if ([extension isEqualToString:@"jpg"]) {
        mimeType = @"image/jpeg";
    } else if ([extension isEqualToString:@"png"]) {
        mimeType = @"image/png";
    } else if ([extension isEqualToString:@"doc"]) {
        mimeType = @"application/msword";
    } else if ([extension isEqualToString:@"ppt"]) {
        mimeType = @"application/vnd.ms-powerpoint";
    } else if ([extension isEqualToString:@"html"]) {
        mimeType = @"text/html";
    } else if ([extension isEqualToString:@"pdf"]) {
        mimeType = @"application/pdf";
    }
    [mc addAttachmentData:fileData mimeType:mimeType fileName:filename];
    [self presentViewController:mc animated:YES completion:NULL];

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MFMailComposeViewController不适用于MDM设备