Creating and attaching a .txt file to email in Xcode [closed] - ios

Question

Closed. This question needs debugging details. It is not currently accepting answers.
Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question.
Closed 8 years ago.
Improve this question
I want to make an iOS app that makes/creates a text file (.txt) then sends it as an email.
The issue i am having is the data to be encrypted pops up with the error "use of undeclared identifier"
[mailController addAttachmentData:dataToBeEncrypted mimeType:#"text/plain"
Here is my .m file
//
// FileIoViewController.m
// FileIo
//
// Created by Flare gun on 6/24/14.
// Copyright (c) 2014 Flaregunapplications. All rights reserved.
//
#import "FileIoViewController.h"
#interface FileIoViewController ()
#end
#implementation FileIoViewController
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(void) writeToTextFile{
//get the documents directory:
NSArray *paths = NSSearchPathForDirectoriesInDomains
(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
//make a file name to write the data to using the documents directory:
NSString *fileName = [NSString stringWithFormat:#"%#/textfile.txt",
documentsDirectory];
//create content - four lines of text
NSString *content = #"One\nTwo\nThree\nFour\nFive";
//save content to the documents directory
[content writeToFile:fileName
atomically:NO
encoding:NSStringEncodingConversionAllowLossy
error:nil];
if([MFMailComposeViewController canSendMail]) {
MFMailComposeViewController *mailController = [[MFMailComposeViewController alloc] init];
mailController.mailComposeDelegate =self;
[mailController setSubject:#"Records"];
[mailController setMessageBody:#"" isHTML:YES];
[mailController addAttachmentData:dataToBeEncrypted mimeType:#"text/plain" fileName:#"Records.txt"];
[self presentModalViewController:mailController animated:YES];
[mailController release];
} else {
//Pop up a notification
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Error" message:#"Could not send email. Verify Internet conneciton and try again." delegate:nil cancelButtonTitle:#"Done" otherButtonTitles:nil];
[alert show];
[alert release];
}
}
#end

Answer 1

To declare dataToBeEncrypted use something like:
NSData *dataToBeEncrypted = [NSData dataWithContentsOfFile:filename];