Question

I am working with iOS5.

I am working on HTTPLivestream project .Here i am using MPMovieplayer ,my problem is when application goes to background there is no audio . i am changing the plist in background mode is audio.But there is no result please help me .

AppDel

- (void)applicationDidEnterBackground:(UIApplication *)application {
  [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
  [[AVAudioSession sharedInstance] setActive: YES error: nil];

  UIApplication *app = [UIApplication sharedApplication];
  backgroundTask = [app beginBackgroundTaskWithExpirationHandler:^{
  }];

  dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0), ^{
  });
}

RadioControlView

  NSString *path =[[NSString alloc] initWithString:@"http://*******/alayam/alayam/playlist.m3u8"];

  audioUrl=[NSURL URLWithString:path];

  appDelegate.player =  [[MPMoviePlayerController alloc] initWithContentURL:audioUrl];
                                   [[NSNotificationCenter defaultCenter] addObserver:self 
                                                         selector:@selector(loadStateDidChange:) 
                                                             name:MPMoviePlayerLoadStateDidChangeNotification 
                                                           object:appDelegate.player];
                if ([appDelegate.player respondsToSelector:@selector(loadState)]) 
                {
                    [appDelegate.player setControlStyle:MPMovieControlModeVolumeOnly];
                    [appDelegate.player setFullscreen:YES];
                    [appDelegate.player prepareToPlay];
                 }

- (void)loadStateDidChange:(NSNotification *)notification
      {   
        [[NSNotificationCenter defaultCenter]removeObserver:self name:MPMoviePlayerLoadStateDidChangeNotification object:appDelegate.player];

      }

Thanks in Advance

Answer 1

If you are testing on simulator, then it’s doesn’t work on simulator, please use device. If you are using device and audio is not playing in background, then can you please email me your complete source code at [e-mail]. I have also done in my Application.
My code is given below.

- (void)viewDidLoad 
{
    [super viewDidLoad];

    NSError *setCategoryErr = nil;
    NSError *activationErr  = nil;
    [[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryPlayback error: &setCategoryErr];
    [[AVAudioSession sharedInstance] setActive: YES error: &activationErr];
}

and in plist i made an array named “Required background mode” and insert an item in array name, “App Plays Audio”.