List saved files in iOS documents directory in a UITableView?

Here is the method I use to get the content of a directory.

-(NSArray *)listFileAtPath:(NSString *)path
{
    //-----> LIST ALL FILES <-----//
    NSLog(@"LISTING ALL FILES FOUND");

    int count;

    NSArray *directoryContent = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:path error:NULL];
    for (count = 0; count < (int)[directoryContent count]; count++)
    {
        NSLog(@"File %d: %@", (count + 1), [directoryContent objectAtIndex:count]);
    }
    return directoryContent;
}

-(NSArray *)findFiles:(NSString *)extension{

NSMutableArray *matches = [[NSMutableArray alloc]init];
NSFileManager *fManager = [NSFileManager defaultManager];
NSString *item;
NSArray *contents = [fManager contentsOfDirectoryAtPath:[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"] error:nil];

// >>> this section here adds all files with the chosen extension to an array
for (item in contents){
    if ([[item pathExtension] isEqualToString:extension]) {
        [matches addObject:item];
    }
}
return matches; }

The example above is pretty self-explanatory. I hope it answers you second question.

To get the contents of a directory

- (NSArray *)ls {
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSArray *directoryContent = [[NSFileManager defaultManager] directoryContentsAtPath: documentsDirectory];

    NSLog(@"%@", documentsDirectory);
    return directoryContent;
}

To get the last path component,

[[path pathComponents] lastObject]