Objective-Zip file folder structure ios

Question

I have my App create a file, compress it into a .zip file, then attach it to an email. But the .zip file contains many directories before the actual file. Starting with the '/' which is a nameless folder and looks invisible to the people receiving it. The top level directory is '/', the next level is 'com'...
/var/mobile/Applications/CDA16BB231BDABABBA/Documents/data.txt

How can I remove all the directories and have the .zip file contain only the file?

Here's the code I have used...

    NSError *error;
    NSString *documentsDirectory = [NSHomeDirectory()
                                    stringByAppendingPathComponent:@"Documents"];
    NSString *filePath = [documentsDirectory
                          stringByAppendingPathComponent:@"data.txt"];
    NSLog(@"string to write:%@",printString);
    [printString writeToFile:filePath atomically:YES
                    encoding:NSUTF8StringEncoding error:&error];

    ////ZIP FILE/////

    NSString *zipfilePath = [documentsDirectory stringByAppendingPathComponent:@"data.zip"];
    [[NSFileManager defaultManager] removeItemAtPath: zipfilePath error: &error];

    ZipFile *zipFile = [[ZipFile alloc]initWithFileName:zipfilePath mode:ZipFileModeCreate];

    NSDictionary *attributes = [[NSFileManager defaultManager]attributesOfItemAtPath:zipfilePath error:&error];
    NSDate *Date = [attributes objectForKey:NSFileCreationDate];

    ZipWriteStream *stream = [zipFile writeFileInZipWithName:filePath fileDate:Date compressionLevel:ZipCompressionLevelBest];
    NSData *data = [NSData dataWithContentsOfFile:filePath];
    [stream writeData:data];
    [stream finishedWriting];


    [zipFile close];

Answer 1

The problem is that you are saying:

writeFileInZipWithName:filePath

The variable filePath contains that huge long name you are complaining about. It is the whole path from the top all the way down to your actual file.

Your file's name is @"data.txt", so what you want to say is:

writeFileInZipWithName:@"data.txt"