class="api-level">
        <div>
  Added in <a href="../../../guide/topics/manifest/uses-sdk-element.html#ApiLevels">API level 11</a></div>
        
  

      </div>
    <div class="jd-details-descr">
      
  <div class="jd-tagdata jd-tagdescr"><p>Indicates whether this keyframe has a valid value. This method is called internally when
 an <code><a href="../../../reference/android/animation/ObjectAnimator.html">ObjectAnimator</a></code> first starts; keyframes without values are assigned values at
 that tim