Animate and toggle Toolbar navigation icon without opening the navigation drawer.

ActionBarDrawerToggleHelper

 private enum ActionDrawableState{
        BURGER, ARROW
    }
    private static void toggleActionBarIcon(ActionDrawableState state, final ActionBarDrawerToggle toggle, boolean animate){
      if(animate) {
            float start = state == ActionDrawableState.ARROW ? 0f : 1.0f;
            final float end = Math.abs(start - 1);
            if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
                ValueAnimator offsetAnimator = ValueAnimator.ofFloat(start, end);
                offsetAnimator.setDuration(300);
                offsetAnimator.setEvaluator(new FloatEvaluator());
                offsetAnimator.setInterpolator(new AccelerateDecelerateInterpolator());
                offsetAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
                    @Override
                    public void onAnimationUpdate(ValueAnimator animation) {
                        float offset = 0;
                        offset = (Float) animation.getAnimatedValue();
                        offset = Math.abs(offset);
                        offset = Math.min(1f, Math.max(0, offset));
                        toggle.onDrawerSlide(null, offset);
                    }
                });
                offsetAnimator.start();
            }else{
                //do the same with nine-old-androids lib :)
            }
        }else{
            if(state == ActionDrawableState.BURGER){
                toggle.onDrawerClosed(null);
            }else{
                toggle.onDrawerOpened(null);
            }
        }
    }