How do I send an e-mail with attachment from iPad - ios

Question

I am developing an experiment in Unity engine (3.4) , it is supposed to run on iPad (iOS5). I do most of my scripting in Monodevelop (2.4.2). After the experiment is over, the results are saved in a text file and stored within the program. I can access them via synchronizing with iTunes, but i want to implement an extra feature - i want to be able to send the file via e-mail. For the starters, the e-mail address can be hardwired into the program.
What i need to implement is as follows:
If the participant in finished:
close the file
compose the message using the hardwired address and the file
check if the ipad has access to the internet
if yes - send the message and place it in the 'sent' of my mail app.
if no - place the message into the outbox of my mail app.
I have experience with GUI and IO scripting, but i have hardly dealt with networking in any programming language, i have no idea where to start. Unity API and Unity Answers were not very helpful.
If you have any useful links or bits of code I could learn from, i would greatly appreciate it.

Answer 1

you can use the MFMailComposeViewController and attach you data as NSData like this
if ([MFMailComposeViewController canSendMail])
{
MFMailComposeViewController *controller=[[MFMailComposeViewController alloc]init];
controller.mailComposeDelegate=self;
[controller setToRecipients#"..."];
[controller setSubject:#"Your Subject"];
NSData* attachmentData = ...
[controller addAttachmentData:attachmentData mimeType:#"..." fileName:#"..."];
[self presentModalViewController:controller animated:YES];
[controller release];
}
and dont forget to implement the delegate to dismiss the modal mail view controller
- (void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error
{
[self dismissModalViewControllerAnimated:YES];
}
the user needs to have the mail app to be configured and press manually the send button