How to attach multiple files in single mail in iOS - iphone

Question

I want to send multiple attachment files in single mail in iOS programatically. I have tried the following so far:
// I give the file from array
NSString *str_mail = [readingEmfReading objectAtIndex:0];
// here I can encode the file
NSData *myData = [str_mail dataUsingEncoding:NSUTF8StringEncoding]
//here I can attach the file with extance of .csv
[controller addAttachmentData:myData mimeType:#".cvs" fileName:retriveEmail]
//here I can set the body for mail
[controller setMessageBody:#"file" isHTML:NO];
//here code for sent mail
if (controller) [self presentViewController:controller animated:YES completion:nil];
By using this code, I can only send one attachment. I want to send multiple files however. How can I achieve this?

Answer 1

you add many time addAttachmentData and add muliple file
try this code :-
add the this line
NSString *str_mail = [readingEmfReading objectAtIndex:0];
// here i can encoded the file
NSData *myData = [str_mail dataUsingEncoding:NSUTF8StringEncoding]
NSData *myData1 = [str_mail dataUsingEncoding:NSUTF8StringEncoding]
//here i can attach the file with extance of .csv
[controller addAttachmentData:myData mimeType:#".cvs" fileName:retriveEmail]
//here i can set the body for mail
// For second file
NSData *myData1 = [str_mail dataUsingEncoding:NSUTF8StringEncoding]
[controller addAttachmentData:myData1 mimeType:#".cvs" fileName:retriveEmail]
[controller setMessageBody:#"file" isHTML:NO];
//here code for sent mail
if (controller) [self presentViewController:controller animated:YES completion:nil];

Answer 2

if([MFMailComposeViewController canSendMail])
{
[mailController setMailComposeDelegate:self];
NSString* message=#"";
NSString *filePath;
for (int i=0; i<filesarray.count; i++)
{
if (i==filesarray.count-1)
{
message=[message stringByAppendingFormat:#"%# ",[filesarray objectAtIndex:i]];
}
else if (i==filesarray.count-2)
{
message=[message stringByAppendingFormat:#"%# and ",[filesarray objectAtIndex:i]];
}
else
message=[message stringByAppendingFormat:#"%#, ",[filesarray objectAtIndex:i]];
NSString *datPath =[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
datPath = [datPath stringByAppendingFormat:#"/%#.csv",[filesarray objectAtIndex:i]];
filePath = datPath;
[mailController addAttachmentData:[NSData dataWithContentsOfFile:filePath] mimeType:#"text/csv" fileName:[NSString stringWithFormat:#"%#.csv",[filesarray objectAtIndex:i]]];
}
[mailController setSubject:message];
[mailController setMessageBody:#"" isHTML:NO];
[self presentModalViewController:mailController animated:YES];
}