Iphone 将sqlite附加到xcode邮件

我对这段代码非常着迷，它应该可以工作，但当我收到邮件时，没有附加任何文件，以下是我的代码：

-(IBAction)mandar:(id)sender
{   
    MFMailComposeViewController *composer=[[MFMailComposeViewController alloc]init];
    [composer setMailComposeDelegate:self];
    if ([MFMailComposeViewController canSendMail]) 
    {
        [composer setToRecipients:[NSArray arrayWithObjects:@"tuperroensalsa@hotmail.com",nil]];
        [composer setSubject:@"Base de datos"];
        [composer setMessageBody:@"Mensage" isHTML:NO];
        [composer setModalTransitionStyle:UIModalTransitionStyleCrossDissolve];
            NSArray *searchPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
        NSString *documentPath = [searchPaths objectAtIndex:0];
        NSString *path = [[NSString alloc] initWithFormat:@"%@/capturas.sqlite",documentPath];

        NSString *Newpath = [[NSString alloc] initWithFormat:@"%@/newData.sqlite",documentPath];
        [[NSFileManager defaultManager] copyItemAtPath:path toPath:Newpath error:nil];
        NSData *data = [NSData dataWithContentsOfFile:Newpath];
        [composer addAttachmentData:data mimeType:@"application/x-sqlite3" fileName:@"capturas.sqlite"];

        [self presentModalViewController:composer animated:YES];
    }
    else {
        UIAlertView *alert=[[UIAlertView alloc] initWithTitle:@"Error" message:@"No se a podido mandar el mensage" delegate:self cancelButtonTitle:@"dismis" otherButtonTitles:nil, nil];
        [alert show];
    }
}

路径正常，数据库中有数据，我在撰写邮件时也会看到文件，但邮件中没有任何内容。我想问题就在这里

[composer addAttachmentData:data mimeType:@"application/x-sqlite3" fileName:@"capturas.sqlite"];

---

但是我不知道为什么它不起作用，谢谢你的帮助。我已经在更新了答案：但是你似乎没有检查它，不管怎样，它还是在这里：

-(IBAction)mandar:(id)sender {

MFMailComposeViewController *composer=[[MFMailComposeViewController alloc]init];
[composer setMailComposeDelegate:self];
if ([MFMailComposeViewController canSendMail]) 
{
    [composer setToRecipients:[NSArray arrayWithObjects:@"EMAIL Address here",nil]];
    [composer setSubject:@"Base de datos"];
    [composer setMessageBody:@"Mensage" isHTML:YES];
    [composer setModalTransitionStyle:UIModalTransitionStyleCrossDissolve];

从您的代码中注释了以下内容：

//  NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
//  NSString *documentsDirectory = [paths objectAtIndex:0];
//  NSString *file = [documentsDirectory stringByAppendingPathComponent:@"capturas.sqlite"];
//  NSData *data=[NSData dataWithContentsOfFile:file];

并替换为以下内容

    NSString *path = [[NSBundle mainBundle] pathForResource:@"database name without extension" ofType:@"sqlite"];
    NSData *myData = [NSData dataWithContentsOfFile:path];

    [composer addAttachmentData:myData mimeType:@"application/x-sqlite3" fileName:path];

    [self presentModalViewController:composer animated:YES];
}
else {
    UIAlertView *alert=[[UIAlertView alloc] initWithTitle:@"Error" message:@"No se a podido mandar el mensage" delegate:self cancelButtonTitle:@"dismis" otherButtonTitles:nil, nil];
    [alert show];
}   

---

}

您可以附加sqlite文件，但您永远无法打开它，例如，通过MacFund上的LiYa应用程序。。。此处列出了

-（void）addAttachmentData:（NSData*）附件mimeType:（NSString*）mimeType文件名：（NSString*）文件名所支持的mime类型。没有
应用程序/x-sqlite3
类型。将在真实环境中尝试该代码。这是否能够附加.db文件？是的，只要您更改文件名、扩展名和mimeType（在这种情况下应为application/octet-stream），并且该文件可以被iOS读取，它就应该能够附加任何文件。请在尝试后给出反馈，以便其他用户可以在需要时找到答案。SQLITE中的数据为空。您可以将此解决方案的swift版本发布到@XIII吗