AnimatedLayout_part_2 update child during scrolling

AnimatedLayout.java

    private void updateOffset(float newOffsetValue) {
        ...
        updateIconView();
    }

    private void updateIconView() {
        float oldTranslatePosition = mWeatherIcon.getTranslationX();
        float newTranslatePosition;
        float newAlpha;

        if (mOffsetValue < getWidth() / 2f) {
            newTranslatePosition = mOffsetValue;
            if (oldTranslatePosition > 0) {
                applyWinterIcon();
            }
            float alphaPass = getWidth() / 2f;
            newAlpha = 1 - newTranslatePosition / alphaPass;

        } else {
            newTranslatePosition = mOffsetValue - getWidth();
            if (oldTranslatePosition < 0) {
                applySummerIcon();
            }

            float alphaPass = getWidth() / 2f;
            newAlpha = 1 + newTranslatePosition / alphaPass;
            mWeatherIcon.setAlpha(newAlpha);
        }
        mWeatherIcon.setAlpha(newAlpha);
        mWeatherIcon.setTranslationX(newTranslatePosition);
    }