code: @Override
      public synchronized AcceleratedScreen getAcceleratedScreen(
              int[] attributes) throws GLException {
          if (accScreen == null) {
              accScreen = new AndroidAcceleratedScreen(attributes);
          }
          return accScreen;
      }
docs: Create the accelerated screen for this platform
  
  @param attributes a sequence of pairs (GLAttibute, value)
  @throws GLException