Google Glass - 'Jump' to a card in CardScrollView via setSelection doesnt work

I had found why it can't jump to specific card for 1~2days.
Finally i got a resolution. hope i could help others
This block is get the position and use animate to jump to the specific

 mCardScroller.setSelection(mCardScroller.getSelectedItemPosition() + 1);
 mCardScroller.startAnimation(AnimationUtils.makeInAnimation(mCardScroller.getContext(), true));

BUT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! NOT WORK
IMPORTANT!!ADD THIS IN YOUR ONCREATE()

mCardScroller.activate()

AND CHECK THIS TWO LIFE PERIOD

@Override
    protected void onResume() {
        super.onResume();
        mCardScroller.activate();
    }

    @Override
    protected void onPause() {
        mCardScroller.deactivate();
        super.onPause();
    }

GOOGLE GLASS 跳到特定的CARD,如果你咬遇到一樣的問題setSelection始終無法使用,在ONCREATE()理面加入mCardScroller.activate()就會有結果了 希望可以幫住到更多人,因為GLASS的資訊好少,我們也花了一點時間來解決這個問題!!