Objective-C

Attach a File to a Multipart MIME Entity

Demonstrates the Chilkat Mime.AppendPartFromFile method, which reads a local file, creates an attachment part, and appends it. The only argument is the file path; the content headers are chosen from the filename extension.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This is the one-call way to add an attachment: Chilkat reads the file, infers its Content-Type from the extension, base64-encodes binary content, and appends it as a child part — typically inside a multipart/mixed. It is the building block behind adding attachments to an email, saving you from constructing the part and setting its headers by hand.

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Objective-C

#import <CkoMime.h>

BOOL success = NO;

//  Demonstrates the Mime.AppendPartFromFile method, which reads a local file, creates an attachment
//  part, and appends it.  The only argument is the file path; the content headers are chosen from
//  the filename extension.

CkoMime *mime = [[CkoMime alloc] init];
success = [mime NewMultipartMixed];
if (success == NO) {
    NSLog(@"%@",mime.LastErrorText);
    return;
}

//  A message body part.
CkoMime *bodyPart = [[CkoMime alloc] init];
success = [bodyPart SetBodyFromPlainText: @"Please see the attached files."];
if (success == NO) {
    NSLog(@"%@",bodyPart.LastErrorText);
    return;
}

success = [mime AppendPart: bodyPart];
if (success == NO) {
    NSLog(@"%@",mime.LastErrorText);
    return;
}

//  Attach files directly.
success = [mime AppendPartFromFile: @"qa_data/report.pdf"];
if (success == NO) {
    NSLog(@"%@",mime.LastErrorText);
    return;
}

success = [mime AppendPartFromFile: @"qa_data/photo.jpg"];
if (success == NO) {
    NSLog(@"%@",mime.LastErrorText);
    return;
}

NSLog(@"%@%d",@"Number of parts: ",[mime.NumParts intValue]);