@Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK) { if (mAdapter != null && mAdapter.getMultiChoiseMode()) { mAdapter.setMultiChoiseMode(false); initTileBar(false); mAdapter.clearSelect(); mAdapter.notifyDataSetChanged(); return true; } } return super.onKeyDown(keyCode, event); }