Objective-C: How to play a video from a UITableViewCell?

Bellow i have some code that should play a video once the user has selected the video he wants by name in a uitableview:

    NSLog(@"url %@",[filePathsArray objectAtIndex:indexPath.row]);

  NSString *currentFileName = [filePathsArray[indexPath.row] lastPathComponent];
  NSString *documentsDirectoryPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
 NSString *filePath = [documentsDirectoryPath stringByAppendingPathComponent:currentFileName];
   NSURL *fileURL = [NSURL fileURLWithPath:filePath];

   //Play the movie now
movieController = [[MPMoviePlayerController alloc] initWithContentURL: fileURL];
[[movieController view] setFrame: [self.view bounds]];
[self.view addSubview: [movieController view]];
[movieController play];

The code should take filePathsArray which is just the name of the file in my documents directory and of corse i cannot use just a name of a file to play a video it must be a full path. For example i need to get the full path like in the simulator. "/Users/UserName/Library/Application Support/iPhone Simulator/4.3.2/Applications" instead i am getting just the name of the file for example "123.mp4".

The problem with the code is this line:NSString *currentFileName = [filePathsArray[indexPath.row] lastPathComponent]; an once again that is due to just receiving the file name. The problem causes the simulator to crash and i receive this:

Thread 1: EXC_BAD_ACCESS(code=1, address=0xc08384e7)

Can anybody help?

Edit

I placed NSLog(@"row %i - filePathsArray %@", indexPath.row, filePathsArray); in the - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {} where my other codes are and i received once again the thread error but i then put the NSLog(@"row %i - filePathsArray %@", indexPath.row, filePathsArray); in

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{}

and that displayed in the debugger output:

filePathsArray (
    "1372954494.023550.mp4",
    "1372954525.440379.mp4",
    "1372954698.070642.mp4",
    "1372954717.124080.mp4",
    "1372954881.568860.mp4",
    "1372954995.932892.mp4",
    "1372955079.400627.mp4",
    "1372955121.735828.mp4",
    "1372955151.191822.mp4",
    "1372955204.253028.mp4",
    "1372955317.622774.mp4",
    "1372955394.617367.mp4",
    "1372955455.130194.mp4",
    "1372955748.579562.mp4",
    "1372955801.431035.mp4",
    "1372955982.626679.mp4",
    "1372956220.934516.mp4",
    "1372956313.205083.mp4",
    "1372956396.179499.mp4",
    "1372956433.715887.mp4",
    "1372956521.383647.mp4",
    "1372956556.635456.mp4",
    "1372956865.871915.mp4",
    "1372957260.725387.mp4",
    "1372957729.062718.mp4",
    "1372957817.498707.mp4",
    "1372958542.838564.mp4",
    "1372958898.002360.mp4",
    "1372958944.864006.mp4",
    "1372958981.295354.mp4",
    "1372959288.333242.mp4",
    "1372959511.324370.mp4",
    "1372959557.161786.mp4",
    "1372959979.054552.mp4",
    "1372960381.754023.mp4",
    "1372960609.649583.mp4",
    "1372964668.874020.mp4",
    "1372964985.709783.mp4",
    "1372965088.565757.mp4",
    "1372965163.876937.mp4",
    "1372965296.464444.mp4",
    "1373027973.427050.mp4",
    "1373028300.018729.mp4",
    "1373028402.868729.mp4",
    "1373031752.143091.mp4"
)

which are all the correct names of my saved files.

EDIT

Here is my full code:

-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
    return 1;
}

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    if(!filePathsArray)
    {
        return 0;
    }
    if ([filePathsArray count] > 0)
        return [filePathsArray count];
    else
        return 0;
}

- (void)viewDidLoad
{
    [super viewDidLoad];

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    filePathsArray = [[[NSFileManager defaultManager] subpathsOfDirectoryAtPath:documentsDirectory  error:nil]mutableCopy];

}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
NSLog(@"row %i - filePathsArray %@", indexPath.row, filePathsArray);

    NSString *currentFileName = filePathsArray[indexPath.row];
 NSLog(@"url %@",[filePathsArray objectAtIndex:indexPath.row]);

  NSString *documentsDirectoryPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES) objectAtIndex:0];
  NSString *filePath = [documentsDirectoryPath stringByAppendingPathComponent:currentFileName];
    NSURL *fileURL = [NSURL fileURLWithPath:filePath];

 //Play the movie now
   movieController = [[MPMoviePlayerController alloc] initWithContentURL: fileURL];
 [[movieController view] setFrame: [self.view bounds]];
   [self.view addSubview: [movieController view]];
   [movieController play];
}

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"MainCell"];
    if (cell == nil) {
        cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"MainCell"];
    }



    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    filePathsArray = [[NSFileManager defaultManager] subpathsOfDirectoryAtPath:documentsDirectory  error:nil];
    NSLog(@"urlstring %@",[filePathsArray objectAtIndex:indexPath.row]);

    cell.textLabel.text = [filePathsArray[indexPath.row] lastPathComponent];

    return cell;
}

Solution

By request, here's the solution:

In the viewDidLoad-method, you have to allocate the array:

filePathsArray = [[NSArray alloc] initWithArray: [[[NSFileManager defaultManager] subpathsOfDirectoryAtPath:documentsDirectory error:nil]mutableCopy]];