Create a folder inside documents folder in iOS apps

I just want to create new folders in the documents folder of my iPhone app.

Does anybody know how to do that?

Appreciate your help!

I do that the following way:

NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
NSString *documentsDirectory = [paths objectAtIndex:0]; // Get documents folder
NSString *dataPath = [documentsDirectory stringByAppendingPathComponent:@"/MyFolder"];

if (![[NSFileManager defaultManager] fileExistsAtPath:dataPath])
    [[NSFileManager defaultManager] createDirectoryAtPath:dataPath withIntermediateDirectories:NO attributes:nil error:&error]; //Create folder

I don't have enough reputation to comment on Manni's answer, but [paths objectAtIndex:0] is the standard way of getting the application's Documents Directory

http://developer.apple.com/library/ios/documentation/iPhone/Conceptual/iPhoneOSProgrammingGuide/StandardBehaviors/StandardBehaviors.html#//apple_ref/doc/uid/TP40007072-CH4-SW6

Because the NSSearchPathForDirectoriesInDomains function was designed originally for Mac OS X, where there could be more than one of each of these directories, it returns an array of paths rather than a single path. In iOS, the resulting array should contain the single path to the directory. Listing 3-1 shows a typical use of this function.

Listing 3-1 Getting the path to the application’s Documents directory

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];