iphone - 将 sqlite 附加到 xcode 邮件

Question

我对这段代码感到疯狂，它应该可以工作，但是当我收到邮件时没有附加文件，这是我的代码:

-(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];
    }
}

路径没问题，数据库中有数据，我在撰写邮件时也看到了该文件，但没有任何内容到达我的邮件。我想问题出在这里

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

不知道为什么不行，谢谢帮助

Answer 1

我已经更新了答案:Error sending database from xCode但你似乎没有检查它，无论如何它又出现了:

-(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这些:

//  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];
}