memory leak during release of movieplayer - objective-c

Question

In one of my apps i want to play a video file from local.so iam using the below code for playing the file.
-(IBAction)playMovie{
NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle]pathForResource:#"Myvideo" ofType:#"mov"]];
MPMoviePlayerController *moviePlayer=[[[MPMoviePlayerController alloc]initWithContentURL:url]autorelease];
[[NSNotificationCenter defaultCenter]addObserver:self selector:#selector(moviePlayBackDidFinish:) name:MPMoviePlayerPlaybackDidFinishNotification object:moviePlayer];
moviePlayer.controlStyle = MPMovieControlStyleEmbedded;
moviePlayer.shouldAutoplay = YES;
[self.view addSubview:moviePlayer.view];
[moviePlayer setFullscreen:YES animated:YES];
//[moviePlayer release];
}
-(void) moviePlayBackDidFinish:(NSNotification*)notification {
MPMoviePlayerController *moviePlayer = [notification object];
[[NSNotificationCenter defaultCenter] removeObserver:self
name:MPMoviePlayerPlaybackDidFinishNotification
object:moviePlayer];
if ([moviePlayer
respondsToSelector:#selector(setFullscreen:animated:)])
{
[moviePlayer.view removeFromSuperview];
}
[moviePlayer release];
}
when i go to analyse or do profile for the above code there shows a warning potential leak happening at 2 places i.e,
[moviePlayer setFullscreen:YES animated:YES];
//[moviePlayer release];
one more is leak is at this part
{
[moviePlayer.view removeFromSuperview];
}
[moviePlayer release]
so how to avoid this memory leak.Even i tried giving autorelease the NSURL Line in the begining of the code,when i do autorelease leak wont happen but video wont play.so how to solve this issue can anyone help??

Answer 1

try this in moviePlayBackDidFinish method, may be it will help
if (videoPlayer) {
[[NSNotificationCenter defaultCenter] removeObserver:self
name:MPMoviePlayerPlaybackDidFinishNotification object:videoPlayer];
[[NSNotificationCenter defaultCenter] removeObserver:self
name:MPMoviePlayerLoadStateDidChangeNotification object:videoPlayer];
[[NSNotificationCenter defaultCenter] removeObserver:self
name:MPMovieMediaTypesAvailableNotification object:videoPlayer];
[videoPlayer pause];
videoPlayer.initialPlaybackTime = -1;
[videoPlayer stop];
[videoPlayer.view removeFromSuperview];
[videoPlayer release];
videoPlayer = nil;
}