Issue attaching CSV file to E-Mail Objective - C - iphone

Question

I'm using the following IBAction to attach a CSV file consisting of some simple receipt data to an e-mail, however when the e-mail composer view opens, a greyed out file appears in the body section and when I actually send the message the message sends with no attachment at all.
Heres my code:
- (IBAction)actionEmailComposer {
NSLog(#"Receipts Count: %d", [receipts count]);
//Create CSV File
NSMutableString *csvString = [[NSMutableString alloc] init];
[csvString appendString:#"Date,Business,Category,Paid By,Note, Number,Currency, Amount"];
for (int i = 0; i < [receipts count]; i++){
[csvString appendString: [[receipts objectAtIndex:i] receiptDate]];
[csvString appendString: [[receipts objectAtIndex:i] business]];
[csvString appendString: [[receipts objectAtIndex:i] category]];
[csvString appendString: [[receipts objectAtIndex:i] paidBy]];
[csvString appendString: [[receipts objectAtIndex:i] note]];
[csvString appendString: [[receipts objectAtIndex:i] number]];
[csvString appendString: [[receipts objectAtIndex:i] currency]];
[csvString appendString: [[receipts objectAtIndex:i] amount]];
}
[csvString writeToFile:#"test.csv" atomically:YES encoding:NSUTF8StringEncoding error:NULL];
if ([MFMailComposeViewController canSendMail]) {
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
// NSString *recipient = [defaults objectForKey:#"reportsEmail"];
NSString *recipient = #"testemail#live.com";
NSArray *recipients = [NSArray arrayWithObjects:recipient, nil];
MFMailComposeViewController *mailViewController = [[MFMailComposeViewController alloc] init];
mailViewController.mailComposeDelegate = self;
[mailViewController setSubject:#"CSV Export"];
[mailViewController setToRecipients:recipients];
[mailViewController setMessageBody:#"" isHTML:NO];
mailViewController.navigationBar.tintColor = [UIColor blackColor];
NSData *myData = [NSData dataWithContentsOfFile:#"test.csv"];
[mailViewController addAttachmentData:myData
mimeType:#"text/csv"
fileName:#"test"];
[self presentModalViewController:mailViewController animated:YES];
}
//Display alert to the user
else {
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:#"Can't Send Mail"
message:#"Device is unable to send email in its current state."
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alertView show];
}
}
csvString outputs :
Date,Business,Category,Paid By,Note, Number,Currency, Amount"July 17, 2012","tho","Category 1","Cheque","lunch","726269","GBP","100.00"
So there is existing data, it just doesn't seem to attach properly, can anyone explain whats going on here?
Thanks,
Jack

Answer 1

Try this code
arr_email=[[NSMutableArray alloc] initWithArray:[objDatabase lookupAllForSQL:#"select * from password"]];
NSString *mystr=#"";
NSString *str_type;
NSString *str_name;
NSString *str_user;
NSString *str_pwd;
NSString *str_url;
NSString *str_descr;
NSString *csvstr;
csvstr=[NSString stringWithFormat:#"Account Type,Account Name,UserName/Card No,Password/Pin No, URL/Other Info,Description"];
for (int i=0; i<[arr_email count]; i++) {
NSMutableDictionary *dict = [arr_email objectAtIndex:i];
str_type=[NSString stringWithFormat:#"%#",[dict objectForKey:#"AccountType"]];
str_name=[NSString stringWithFormat:#"%#",[dict objectForKey:#"AccountName"]];
str_user=[NSString stringWithFormat:#"%#",[dict objectForKey:#"UserName"]];
str_pwd=[NSString stringWithFormat:#"%#",[dict objectForKey:#"Password"]];
str_url=[NSString stringWithFormat:#"%#",[dict objectForKey:#"Url"]];
str_descr=[NSString stringWithFormat:#"%#",[dict objectForKey:#"Description"]];
mystr=[NSString stringWithFormat:#"%# \n %#,%#,%#,%#,%#,%#",mystr,str_type,str_name,str_user,str_pwd,str_url,str_descr];
}
csvstr=[NSString stringWithFormat:#"%# \n %#",csvstr,mystr];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *docDir = [paths objectAtIndex:0];
NSString *filename = [docDir stringByAppendingPathComponent:[NSString stringWithFormat:#"My Private Closet.csv"]];
NSError *error = NULL;
BOOL written = [csvstr writeToFile:filename atomically:YES encoding:NSUTF8StringEncoding error:&error];
if (!written)
NSLog(#"write failed, error=%#", error);

Answer 2

It's counterintuitive, but the file name when you attach the file does not include the extension. Thus, with a file name called "test.csv":
[mailViewController addAttachmentData:myData
mimeType:#"text/csv"
fileName:#"test"];