Objective-C

Save a Single Email Attachment to Disk

Demonstrates the Chilkat Email.SaveAttachedFile method, which saves the attachment at a given zero-based index to a directory. If the directory or any of its components do not exist, Chilkat creates them. This example adds an attachment and saves it.

Background: Where SaveAllAttachments writes every attachment at once, SaveAttachedFile saves just one by index — useful when you have inspected the attachments (by type, name, or size) and want to extract only a specific file. The attachment keeps its own filename; the same filename-safety considerations apply as when saving all of them.

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Objective-C

#import <CkoEmail.h>

BOOL success = NO;

//  Demonstrates the SaveAttachedFile method, which saves the attachment at a given
//  zero-based index to a directory.  If the directory (or any of its components) does not
//  exist, Chilkat creates it.

CkoEmail *email = [[CkoEmail alloc] init];
email.Subject = @"Save one attachment";

[email AddStringAttachment: @"report.txt" str: @"Attachment content."];

//  Save the attachment at index 0 into the specified directory.
success = [email SaveAttachedFile: [NSNumber numberWithInt: 0] directory: @"qa_output/attachments"];
if (success == NO) {
    NSLog(@"%@",email.LastErrorText);
    return true;
}

NSLog(@"%@",@"Saved attachment 0.");

//  Note: The path "qa_output/..." is a relative local filesystem path,
//  relative to the current working directory of the running application.