在使用模擬器時有聲音，但裝到ios device卻沒聲音

MPMoviePlayer sound working in Simulators and ipad device, but not Working in iPhone Device

http://stackoverflow.com/questions/9408211/mpmovieplayer-sound-working-in-simulators-and-ipad-device-but-not-working-in-ip

http://stackoverflow.com/questions/5867341/how-to-turn-off-audio-in-mpmovieplayercontroller-iphone

主要就是針對下面設定成NO

useApplicationAudioSession

ex:- (void)viewDidLoad

{

    [super viewDidLoad];

// Do any additional setup after loading the view.

    [loadFilmIndicatorView startAnimating];

    //設定影片檔路徑

    MyManager *sharedManager = [MyManager sharedManager];

    

    NSURL *url = [NSURL URLWithString:sharedManager.playFilmUrl];

   // NSString *path = [[NSBundle mainBundle] pathForResource:@"Keep in touch" ofType:@"mp4"];

   // url=[NSURL fileURLWithPath:path];

    

    //player為MPMoviePlayerController型態的指標

    player = [[MPMoviePlayerController alloc] initWithContentURL:url];

    

    //旋轉90度

    player.view.transform = CGAffineTransformMakeRotation(1.5707964);

    

    //設定影片比例的縮放、重複、控制列等參數

    player.scalingMode = MPMovieScalingModeAspectFit;

    player.repeatMode = MPMovieRepeatModeNone;

    player.controlStyle = MPMovieControlStyleFullscreen;//MPMovieControlStyleDefault;

    player.useApplicationAudioSession=NO;

    //使用Observer製作完成播放時要執行的動作

    [[NSNotificationCenter defaultCenter] addObserver:self

                                             selector:@selector(moviePlayBackDidFinish:)

                                                 name:MPMoviePlayerPlaybackDidFinishNotification

                                               object:player];

    

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePreloadDidFinish:) name:MPMoviePlayerLoadStateDidChangeNotification object:nil];

    

    //自動縮放符合畫面比例

    // player.view.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight;

    NSLog(@"filmurl:%@",sharedManager.playFilmUrl);

    

    [player play];

  

}