code: public void popAnimation(boolean on) {
          popAnimationSpring.setEndValue(on ? 1 : 0);
          popAnimationSpring1.setEndValue(on ? 1 : 0);
          popAnimationSpring2.setEndValue(on ? 1 : 0);
          popAnimationSpring3.setEndValue(on ? 1 : 0);
          popAnimationSpring4.setEndValue(on ? 1 : 0);
      }
docs: popAnimation transition