How to access special directory on the iphone device

Use NSSearchPathForDirectoriesInDomains(). First argument “NSDocumentDirecotry” is the key to specify special directory, in this case Document directory under the application. The method returns absolute path expression.

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
                               NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSLog(@"NSDocumentDirectory is %@", documentsDirectory);

Following is the list of the special directory key and result. Some keys are defined in the header file but actually they return nothing.