MPMoviePlayerController - black screen when switching views - iphone

Question

The background image is an animated sky
When switching between settings page (static image) and the home page (animated image) the screen animation often drops off and becomes a single black image
Can anybody suggest a reason or a solution?
Thanks!
Henry Colour Vision Apps
- (void)viewDidLoad
{
[super viewDidLoad];
self.mp = [[MPMoviePlayerController alloc] initWithContentURL:[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:#"iPhone4" ofType:#"mov"]]];
mp.repeatMode = MPMovieRepeatModeOne;
[mp.view setFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
mp.scalingMode = MPMovieScalingModeFill;
[mp setFullscreen:YES];
mp.controlStyle = MPMovieControlStyleNone;
[self.view addSubview:mp.view];
[self.view sendSubviewToBack:mp.view];
[mp prepareToPlay];
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[self.mp play];
}

Answer 1

Try add a observer to your player. Like this:
- (void)viewDidLoad
{
///...
self.mp = [[MPMoviePlayerController alloc] initWithContentURL:[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:#"iPhone4" ofType:#"mov"]]];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(moviePlaybackComplete:)
name:MPMoviePlayerPlaybackDidFinishNotification
object:self.mp];
///...
}
Then you can get what's wrong:
- (void)moviePlaybackComplete:(NSNotification *)notification
{
NSLog(#"Movie Finished.");
int reason = [[[notification userInfo] valueForKey:MPMoviePlayerPlaybackDidFinishReasonUserInfoKey] intValue];
if (reason == MPMovieFinishReasonPlaybackError) {
NSDictionary *notificationUserInfo = [notification userInfo];
NSError *mediaPlayerError = [notificationUserInfo objectForKey:#"error"];
if (mediaPlayerError)
{
NSLog(#"playback failed with error description: %#", [mediaPlayerError localizedDescription]);
}
else
{
NSLog(#"playback failed without any given reason");
}
}
[[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerPlaybackDidFinishNotification object:self.mp];
}