First, we will find out where in simulators and iPhones our document directories are present. To find the path, we need to write some code in our viewDidLoad method. Add the following line of code in viewDidLoad:

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

In the preceding code, first we fetch the existing path in our path's array. Now, we will take the first object of our path array in a string that means our string contains one path for our directory. This code will print the path for document directory of the simulator or device wherever you are running the code.

To create the folder in documentsDirectory, run the following code:

NSString *dataPath = [documentsDirectory stringByAppendingPathComponent:@"/MyFolder"];
if (![[NSFileManager defaultManager] fileExistsAtPath:dataPath])
  [[NSFileManager defaultManager] createDirectoryAtPath:dataPath withIntermediateDirectories:NO attributes:nil error:nil];

In the preceding code snippet, the [documentsDirectory stringByAppendingPathComponent:@"/MyFolder"] line will create our folder in the Document directory and the last code of NSFileManager will check whether that dataPath exists or not; if it does not exist, then it will create a new path.

Now, compile and run the project; you should be able to see the path of Document directories in your project console. This should look like the following screenshot:

Now, go to Finder; from the options, select Go to Folder and paste the documentsDirectory path from the console. This will navigate you to the Documents directory of the simulator. The Documents directory will look like the following screenshot: