Example that shows how to implement a Value Animator

Android Value Animator Example.java

/**
 * ValueAnimator can be type of: ofInt, ofFloat, ofObject, etc... 
 * Check for more info: http://developer.android.com/reference/android/animation/ValueAnimator.html
 * and http://developer.android.com/guide/topics/graphics/prop-animation.html
 */
public ValueAnimator va = ValueAnimator.ofInt(0, 300);
public int mDuration = 3000; //in millis
va.setDuration(mDuration);
va.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
    public void onAnimationUpdate(ValueAnimator animation) {
        Integer value = (Integer) animation.getAnimatedValue();
        v.getLayoutParams().height = value.intValue();
        //Do whatever you need to to with the value and...
        //Call invalidate if it's necessary to update the canvas
        //invalidate();
    }
});
 
va.start();

Thanks!