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POHow can release MPMoviePlayerController preload memory
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  1. POHow can release MPMoviePlayerController preload memory
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    copied!<p>HELLO. I'm using a MPMoviePlayerController in my iPhone app to display some short video clips sometimes. There are some buttons in the app mainView . When I press the button, the movie will be play. When I press the button,the button call [self playVideo: @"xxx"],and the video shows correctly.<strong>But when I see the app with Instruments Allocations Tool I see that the memory allocated gets up to 8+ MB and is not deallocated after the player finished.</strong> if I press the button just about 15th times, the ipad will collapse. The responsible for the allocations is a responsible Library called <strong>CoreVideo</strong> . Maybe the memory leaks when the video preload but don't release after it's finished. How i can release these memory. Here are the methods in the Category:</p> <pre><code>-(id)playVideo:(NSString* )videoName { NSString* s = [[NSBundle mainBundle] pathForResource:videoName ofType:@"mp4"]; NSURL* url = [NSURL fileURLWithPath:s]; [self playVideoAtURL: url]; s = nil; [s release]; url = nil; [url release]; } -(void)playVideoAtURL:(NSURL *)theURL { theMovie = [[MPMoviePlayerViewController alloc] initWithContentURL:theURL]; theMovie.moviePlayer.scalingMode = MPMovieScalingModeAspectFit; theMovie.moviePlayer.controlStyle = MPMovieControlStyleFullscreen; if (LeftOrRight == 0) { [theMovie.view setTransform: CGAffineTransformMakeRotation(degreesToRadians(-90))]; } else if (LeftOrRight == 1) { [theMovie.view setTransform: CGAffineTransformMakeRotation(degreesToRadians(90))]; } CGRect screenBounds = [[UIScreen mainScreen] bounds]; theMovie.view.frame = screenBounds; theMovie.moviePlayer.movieSourceType = MPMovieSourceTypeFile; [theMovie.moviePlayer prepareToPlay]; [self presentModalViewController: theMovie animated: YES]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(myMovieFinishedCallback:) name: MPMoviePlayerPlaybackDidFinishNotification object:nil]; } -(void)myMovieFinishedCallback:(NSNotification *)aNotification { [[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerPlaybackDidFinishNotification object:nil]; [theMovie dismissMoviePlayerViewControllerAnimated]; [theMovie.moviePlayer stop]; [theMovie release]; } </code></pre> <p>Thanks!</p>
 

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