public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        mScaleInAnim = new ScaleAnimation(1, 1, 0, 1);
        mScaleInAnim.setDuration(700);
        mScaleInAnim.setAnimationListener(this);

        mScaleOutAnim = new ScaleAnimation(1, 1, 1, 0);
        mScaleOutAnim.setDuration(700);
        mScaleOutAnim.setAnimationListener(this);

        if (getArguments().containsKey(ARG_ITEM_ID)) {
            // Load the dummy content specified by the fragment
            // arguments. In a real-world scenario, use a Loader
            // to load content from a content provider.
            mTrip = TripContent.getSingleton().ITEM_MAP.get(getArguments().getString(ARG_ITEM_ID));
        }

    public void update(String TAG, int year, int month, int day) {
        if(TAG == START_PICKER_TAG)
        {
            mTrip.setBegin(year, month, day);
            mTripStartTextView.setText(mTrip.getBeginAsString(getActivity().getBaseContext()));

            long begin = mTrip.getBegin().getTimeInMillis();
            long end = mTrip.getEnd().getTimeInMillis();

            if(begin < end)
            {
                mErrorView.startAnimation(mScaleOutAnim);
            }
            else
            {
                mErrorView.startAnimation(mScaleInAnim);
            }
        }
        else if(TAG == END_PICKER_TAG)
        {
            mTrip.setEnd(year, month, day);
            mTripEndTextView.setText(mTrip.getEndAsString(getActivity().getBaseContext()));

            long begin = mTrip.getBegin().getTimeInMillis();
            long end = mTrip.getEnd().getTimeInMillis();

            if(begin < end)
            {
                mErrorView.startAnimation(mScaleOutAnim);
            }
            else
            {
                mErrorView.startAnimation(mScaleInAnim);
            }
        }
    }

    @Override
    public void onAnimationStart(Animation animation) {
        if(animation == mScaleInAnim)
        {
            mErrorView.setVisibility(View.VISIBLE);
        }
    }

    @Override
    public void onAnimationEnd(Animation animation) {
        if(animation == mScaleOutAnim)
        {
            mErrorView.setVisibility(View.GONE);
        }
    }

    @Override
    public void onAnimationRepeat(Animation animation) {
    }