Q:

How to make a directory iOS?

Okay,
So I have a Cydia app that I need to update. I am aware with Cydia apps that they don't have a Documents folder, so you have to make one. And here's how I made it before in iOS 4 (which doesn't work on iOS 5): 
mkdir("/var/mobile/Library/APPNAME", 0755);
mkdir("/var/mobile/Library/APPNAME/Documents", 0755);

NSString *foofile = @"/var/mobile/Library/APPNAME/Documents/database.db";
BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:foofile];

if (fileExists == TRUE) {
    NSLog(@"already exists");
} else {
    NSLog(@"doesn't exists");
    NSFileManager *fileManager = [[NSFileManager defaultManager]autorelease];
    NSError *error;
    NSString *documentDBFolderPath = @"/var/mobile/Library/APPNAME/Documents/database.db";

    NSString *resourceDBFolderPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"database.db"];
    [fileManager copyItemAtPath:resourceDBFolderPath toPath:documentDBFolderPath error:&error];

}

I also included code that copies the database file to that folder, too. That doesn't work (even when I create the folder manually via SSH). 
Please help! Thanks.

A:

Here is the method I made to create directories
-(void)createDirectory:(NSString *)directoryName atFilePath:(NSString *)filePath
{
    NSString *filePathAndDirectory = [filePath stringByAppendingPathComponent:directoryName];
    NSError *error;

    if (![[NSFileManager defaultManager] createDirectoryAtPath:filePathAndDirectory
                                   withIntermediateDirectories:NO
                                                    attributes:nil
                                                         error:&error])
    {
        NSLog(@"Create directory error: %@", error);
    }
}

A:

Try using createDirectoryAtURL:withIntermediateDirectories:attributes:error:.
NSFileManager Class Reference:

createDirectoryAtURL:withIntermediateDirectories:attributes:error:
Creates a directory with given attributes at the specified path.
Parameters
url - A file URL that specifies the directory to create. 
  If you want to specify a relative path, you must set the 
  current working directory before creating the corresponding 
  NSURL object. This parameter must not be nil.
createIntermediates - If YES, this method creates any non-existent
  parent directories as part of creating the directory in url. If NO,
  this method fails if any of the intermediate parent directories does
  not exist. This method also fails if any of the intermediate path
  elements corresponds to a file and not a directory. 
attributes - The file attributes for the new directory and any newly created
  intermediate directories. You can set the owner and group numbers,
  file permissions, and modification date. If you specify nil for this
  parameter or omit a particular value, one or more default values are
  used as described in the discussion. For a list of keys you can
  include in this dictionary, see “Constants” (page 54) section lists
  the global constants used as keys in the attributes dictionary. Some
  of the keys, such as NSFileHFSCreatorCode and NSFileHFSTypeCode, do
  not apply to directories. 
error - On input, a pointer to an error object. If an error occurs, 
  this pointer is set to an actual error object containing the error 
  information. You may specify nil for this parameter if you do not 
  want the error information.
Return Value
YES if the
  directory was created or already exists or NO if an error occurred.

A:

Check NSFileManager's class reference. To create folders you need createDirectoryAtPath:withIntermediateDirectories:attributes:error:

