AnimatedLayout part 3: implement fling end listener

AnimatedLayout.java

 private void init() {
        ...
        mFling.addEndListener(new DynamicAnimation.OnAnimationEndListener() {
            @Override
            public void onAnimationEnd(DynamicAnimation animation, boolean canceled, float value, float velocity) {
                if (!canceled) {
                    if (mOffsetValue == 0 || mOffsetValue == getWidth()) {
                        //correct ending
                        mCurrentAnimation = IDLE_ANIMATION_STATE;
                        if (mOffsetValue == 0) {
                            mIdleState = WINTER_STATE;
                            applyWinter();
                        } else {
                            mIdleState = SUMMER_STATE;
                            applySummer();
                        }
                    } else {
                        applyIdleState();
                    }
                } else {
                    if (!isTouching) {
                        applyIdleState();
                    }
                }
                invalidate();
            }
        });
    }