Objective c: How to only delete all file under a directory but keep the directory itself

Question

I found the code below to delete file in objective-c, but I want to only delete all files under directory of Caches and keep the directory Caches itsel

Answer 1

- (void) removeDocuments
{
    NSString *docDir = // get documents directory
    NSString *cacheDir = [docDir stringByAppendingPathComponent: @"cacheDir"];

    // check if cache dir exists

    // get all files in this directory
    NSFileManager *fm = [NSFileManager defaultManager];
    NSArray *fileList = [fm contentsOfDirectoryAtPath: cacheDir error: nil];

    // remove
    for(NSInteger i = 0; i < [fileList count]; ++i)
    {
        NSString *fp =  [fileList objectAtIndex: i];
        NSString *remPath = [cacheDir stringByAppendingPathComponent: fp];
        [fm removeItemAtPath: remPath error: nil];
    }
}