Consume key events in Android

How do I consume key events in Android. I have exported my game to a "Google Android Project" and I have tried both overriding the dispatchKeyEvent() and onGenericMotionEvent, like this:

     // For some reason the multiple keyevent type is not supported by the ndk.
     // Force event injection by overriding dispatchKeyEvent().
     @Override public boolean dispatchKeyEvent(KeyEvent event)
     {
         Log.d(String.valueOf(event.getDeviceId()), "Control");
         Toast.makeText(this, String.valueOf(event.getDeviceId()), Toast.LENGTH_SHORT).show();
     
         if (event.getAction() == KeyEvent.ACTION_MULTIPLE)
             return mUnityPlayer.injectEvent(event);
         return super.dispatchKeyEvent(event);
     }
 
     @Override
     public boolean onGenericMotionEvent(MotionEvent event) 
     { 
         Log.d(String.valueOf(event.getDeviceId()), "Control");
         Toast.makeText(this, String.valueOf(event.getDeviceId()), Toast.LENGTH_SHORT).show();
         return true;
     }

I have also tried to attach KeyListener handlers directly to the UnityPlayer object, like this:

         mUnityPlayer = new UnityPlayer(this);
         mUnityPlayer.setOnKeyListener(new View.OnKeyListener()
         {
             
             @Override
             public boolean onKey(View v, int keyCode, KeyEvent event)
             {
                 Log.d(String.valueOf(event.getDeviceId()), "Control");
                 Toast.makeText(UnityPlayerNativeActivity.this, String.valueOf(event.getDeviceId()), Toast.LENGTH_SHORT).show();
                 return true;
             }
         }
         );

But in both cases, the Java code is not triggering. Any ideas why??