Android: Detect When SD Card Mounted as Disk Drive to a Computer

I am writing an application that needs to detect when the SD card is mounted as a disk drive to a computer via USB or when it has been manually removed. I tried using a broadcast receiver for this purpose, but the onReceive is not getting called. My code is as follows.

IntentFilter filter2 = new IntentFilter();
         //filter2.addAction(Intent.ACTION_AIRPLANE_MODE_CHANGED);
         filter2.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
         filter2.addAction(Intent.ACTION_MEDIA_SHARED);
         filter2.addAction(Intent.ACTION_MEDIA_REMOVED);
         filter2.addAction(Intent.ACTION_MEDIA_MOUNTED);
 
         registerReceiver(new CustomBroadcastReceiver(), filter2);
 

My broadcast receiver is as follows...

public class CustomBroadcastReceiver extends BroadcastReceiver{
 
     public CustomBroadcastReceiver(){
 
     }
 
     @Override
     public void onReceive(Context context, Intent intent) {
         String action = intent.getAction();
 
         if(action.equals(Intent.ACTION_MEDIA_UNMOUNTED) || action.equals(Intent.ACTION_MEDIA_SHARED) || action.equals(Intent.ACTION_MEDIA_REMOVED)){
             HardwareManager.IS_MEDIA_MOUNTED = false;
         }else if(action.equals(Intent.ACTION_MEDIA_MOUNTED)){
             HardwareManager.IS_MEDIA_MOUNTED = true;
         }else if(action.equals(Intent.ACTION_AIRPLANE_MODE_CHANGED)){
             HardwareManager.IN_AIRPLANE_MODE = intent.getBooleanExtra("state", false);
         }
     }
 
 }
 

The onReceive method does not fire when I connect as a disk drive via USB.

What am I doing wrong ?

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