Remove .DS store Files from Document Directory

//clean documnt directory

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

NSError *error = nil;

NSMutableArray *dirArr = [NSMutableArray arrayWithArray:[[NSFileManager defaultManager] contentsOfDirectoryAtPath:folderPath error:&error]];

[dirArr removeObject:@".DS_Store"];

for (NSString *file in [[NSFileManager defaultManager] contentsOfDirectoryAtPath:folderPath error:&error]) 

{

     [[NSFileManager defaultManager] removeItemAtPath:[folderPath stringByAppendingPathComponent:file] error:&error];

}