android scale animation

public void scaleViewY(View v, float startScale, float endScale) {
    Animation anim = new ScaleAnimation(
            1f, 1f, // Start and end values for the X axis scaling            startScale, endScale, // Start and end values for the Y axis scaling            Animation.RELATIVE_TO_SELF, 0f, // Pivot point of X scaling            Animation.RELATIVE_TO_SELF, 0.5f); // Pivot point of Y scaling    anim.setFillAfter(true); // Needed to keep the result of the animation    anim.setDuration(500);    v.startAnimation(anim);}