How to play a audio from avplayer in background when the home button is pressed....?

Question

I done all these coding still unable play the video.....

1. Info.plist file adding in the UIBackgroundModes array the audio element.

2. And added these two methods in AppDelegate.m

   [[AVAudioSession sharedInstance] setDelegate: self];
   [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
   

3. and this methods in the player class

   (void)viewDidAppear:(BOOL)animated
   {
     [super viewDidAppear:animated];
     [[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
     [self becomeFirstResponder];
   }
   
   - (void)viewWillDisappear:(BOOL)animated
   {
       [mPlayer pause];    
       [super viewWillDisappear:animated];
       [[UIApplication sharedApplication] endReceivingRemoteControlEvents];
       [self resignFirstResponder];
   }
   
   (void)remoteControlReceivedWithEvent:(UIEvent *)event {
           switch (event.subtype) {
               case UIEventSubtypeRemoteControlTogglePlayPause:
                   if([mPlayer rate] == 0){
                       [mPlayer play];
                   } else {
                       [mPlayer pause];
                   }
                   break;
               case UIEventSubtypeRemoteControlPlay:
                   [mPlayer play];
                   break;
               case UIEventSubtypeRemoteControlPause:
                   [mPlayer pause];
                   break;
               default:
                   break;
           }
       }