CSV not attaching to in app email?

Question

So I have had this problem for sometime and just cant get it working! I have been building a survey app that users simply enter information in and its saved to a csv file. Im no

Answer 1

So after many sleepless nights and a lot of trying different ways I finally found the way that works with a friend (see code below)

 NSString *docsDirectory = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
    NSData *attachment = [NSData dataWithContentsOfFile:[docsDirectory stringByAppendingPathComponent:@"results.csv"]];

    MFMailComposeViewController *mailer = [[MFMailComposeViewController alloc] init];
    mailer.mailComposeDelegate = self;
    [mailer setToRecipients:@[@"gpsflighttrial@gcap.eu"]];
    [mailer setSubject:self.subject.text];
    [mailer setMessageBody:self.message.text isHTML:NO];
    [mailer addAttachmentData:attachment mimeType:@"application/csv" fileName:@"results.csv"];
    [self presentModalViewController:mailer animated:YES];

Just in case anyone has this problem in the future.

Answer 2

Reason for csv not being attached can be ether of below :

1) filename or filepath is wrong as result nsdata of csv will be nil.

2) filename in addAttachmentData mimeType: fileName: method should cantain only name not type of file format.

Changes in your method is given below :

-(IBAction)send:(id)sender {

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];

    // Determine the file name and extension
    NSString *strFileName = @"results.csv";
    NSArray *filepart = [strFileName componentsSeparatedByString:@"."];
    NSString *filename = [filepart objectAtIndex:0];

    //get file path
    NSString *savedFilePath = [documentsDirectory stringByAppendingPathComponent:strFileName];

    //Now check if file exits
    NSFileManager *fileManager = [NSFileManager defaultManager];
    if ([fileManager fileExistsAtPath:savedFilePath]){ 
       NSData *csvData = [NSData dataWithContentsOfFile:savedFilePath];

       if(csvData)
       {
          MFMailComposeViewController *mailcomposer = [[MFMailComposeViewController alloc] init];
          [mailcomposer addAttachmentData:csvData mimeType:@"text/csv" fileName:filename];
          [mailcomposer setToRecipients:@[@"gpsflighttrial@gcap.eu"]];
          [mailcomposer setSubject:self.subject.text];
          [mailcomposer setMessageBody:self.message.text isHTML:NO];
       }
       else
          NSLog(@"error csv data not created");
    }
    else
       NSLog(@"error file doesnot exists");

}

Answer 3

Change your mimeType to @"application/csv" and it will work.