List Files in SubFolder (only in SubFolders )from a Folder

I need get list files in subFolder from a Folder main.

This is my code, but the value "filelist1" always show me empty array.

//

// ViewController.m

// MoveFiles

//

// Created by Jose Antonio Vazquez Mingorance on 10/10/15.

// Copyright (c) 2015 Jose Vazquez. All rights reserved.

//

#import "ViewController.h"

@implementation ViewController

- (void)viewDidLoad {

[superviewDidLoad];

// Do any additional setup after loading the view.

}

- (void)setRepresentedObject:(id)representedObject {

[super setRepresentedObject:representedObject];

// Update the view, if already loaded.

}

// Solo los directorios

- (BOOL)onlyFolders:(int)i filelist:(NSArray *)filelist url:(NSURL *)url filemgr:(NSFileManager *)filemgr {

NSString *path = [[url path] stringByAppendingPathComponent:[filelist objectAtIndex: i]];

BOOL isDir = NO;

[filemgr fileExistsAtPath:path isDirectory:(&isDir)];

return isDir;

}

// Listado de archivos

// Abre panel de seleccion de carpeta

- (IBAction)AbreDirectorio:(id)sender {

NSOpenPanel *panel = [NSOpenPanelopenPanel];

[panel setCanChooseFiles:NO];

[panel setCanChooseDirectories:YES];

[panel setAllowsMultipleSelection:YES]; // yes if more than one dir is allowed

NSInteger clicked = [panel runModal];

if (clicked == NSFileHandlingPanelOKButton) {

for (NSURL *url in [panel URLs]) {

NSFileManager *filemgr;

NSArray *filelist;

long count;

int i;

NSString *subDir;

NSArray *filelist1;

NSMutableString *urlSub = [[NSMutableStringalloc]init];

NSString *enlace = @"/";

NSString *subDir1;

// NSString *immutableString ;

long count1;

long j;

filemgr = [NSFileManager defaultManager];

filelist = [filemgr contentsOfDirectoryAtPath: [url path] error: nil];

count = [filelist count];

// Todos los archivos

for (i = 0; i < count; i++)

{

BOOL isDir;

isDir = [self onlyFolders:i filelist:filelist url:url filemgr:filemgr];

if (isDir){

// Subdirectorios

//NSLog(@"%@", url);

// NSLog (@"%@", [filelist objectAtIndex: i]);

NSString *temp1 = [url absoluteString];

NSString *temp2 = (NSString *)[filelist objectAtIndex: i] ;

subDir = [temp1 stringByAppendingString:temp2];

subDir1 = [subDir stringByAppendingString:enlace];

NSLog(@"%@", urlSub);

// filelist1 show always empy

filelist1 = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:subDir1 error:nil];

count1 = [filelist1 count];

for (j = 0; j < count; j++)

{

NSLog (@"%@", [filelist1 objectAtIndex: j]);

}

}

}

}

NSLog(@"Fin");

}

}

@end