@Override public void onDrawerStateChanged(int state) { mDrawerToggle.onDrawerStateChanged(state); switch (state) { case DrawerLayout.STATE_DRAGGING: case DrawerLayout.STATE_SETTLING: startTransition(); break; case DrawerLayout.STATE_IDLE: stopTransition(); break; } if (mDrawerListener != null) { mDrawerListener.onDrawerStateChanged(state); } }