@Override
 public boolean onOptionsItemSelected(MenuItem item) {
   if (mDistribution.onOptionsItemSelected(item)) {
     return true;
   }
   return super.onOptionsItemSelected(item);
 }
 @Override
 protected void onPrepareDialog(int id, Dialog dialog) {
   super.onPrepareDialog(id, dialog);
   mDistribution.onPrepareDialog(id, dialog);
 }
 @Override
 protected Dialog onCreateDialog(int id) {
   return mDistribution.onCreateDialog(id);
 }
 @Override
 public boolean onCreateOptionsMenu(Menu menu) {
   super.onCreateOptionsMenu(menu);
   mDistribution.onCreateOptionsMenu(menu);
   return true;
 }