Call to `getDrawingCache` returns null when scroll is enabled

What is missing in this code? This same code works on ICS. On API 8 the scroll appears and some content goes out of screen. How to get the drawing cache in this case?

Code:

TableLayout page = (TableLayout) findViewById(R.id.page);
page.setDrawingCacheEnabled(true);
page.buildDrawingCache();

// getDrawingCache returns null...
Bitmap pageBmp = Bitmap.createBitmap(page.getDrawingCache(true));
page.destroyDrawingCache();
page.setDrawingCacheEnabled(false);