title: MPVolumeView does not work in ios 8
body: <p>I want to change volume of played movie. As I've understand that I have to use MPVolumeView, and the next code perfectly worked in ios 6.1 (tested on ipod touch 4g), but does not work on ios 8.1 (simulator Version 8.1 (550.3)) - volume slider does not appear. Please help what have I missed?</p>
  
  <pre><code>#import "ViewController.h"
  #import &lt;MediaPlayer/MediaPlayer.h&gt;
  
  @interface ViewController ()
  
  @property (retain, nonatomic) MPMoviePlayerController *player;
  @property (retain, nonatomic) MPVolumeView *volumeView;
  
  @end
  
  @implementation ViewController
  
  - (void)viewDidLoad {
      [super viewDidLoad];
      // Do any additional setup after loading the view, typically from a nib.
  
      NSURL *movieUrl = [[NSBundle mainBundle] URLForResource:@"IMG_0001" withExtension:@"MOV"];
      self.player = [[MPMoviePlayerController alloc] initWithContentURL:movieUrl];
      self.player.view.frame = self.view.bounds;
  
      // Here is where you set the control Style like fullscreen or embedded
      self.player.controlStyle = MPMovieControlStyleEmbedded;
      self.player.scalingMode = MPMovieScalingModeAspectFit;
      self.player.allowsAirPlay = YES;
      [self.view addSubview:self.player.view];
  
      [self.player prepareToPlay];
      [self.player play];
  
      self.volumeView = [ [MPVolumeView alloc] init];
      [self.volumeView setShowsVolumeSlider:YES];
      [self.volumeView setShowsRouteButton:YES];
      self.volumeView.frame = CGRectMake(0, 0, self.view.bounds.size.width, 30);
      // show volume view border
      self.volumeView.layer.borderColor = [[UIColor redColor] CGColor];
      self.volumeView.layer.borderWidth = 1.0f;
  
      // next 6 lines - is my try to add slider images, but no luck again
      UIImage *sliderThumbImage = [UIImage imageNamed:@"sliderthumb.png"];
      UIImage *sliderMinTrackImage = [UIImage imageNamed:@"slidermintrack.png"];
      UIImage *sliderMaxTrackImage = [UIImage imageNamed:@"slidermaxtrack.png"];
      [self.volumeView setMinimumVolumeSliderImage:sliderMinTrackImage forState:UIControlStateNormal];
      [self.volumeView setMaximumVolumeSliderImage:sliderMaxTrackImage forState:UIControlStateNormal];
      [self.volumeView setVolumeThumbImage:sliderThumbImage forState:UIControlStateNormal];
  
      [self.view addSubview:self.volumeView];
  }
  
  @end
  </code></pre>
  
  <p>P.S. xCode 6.1</p>