public Composer alpha(long animDuration,float alpha,Ease ease){
  AnimParameter beforeParam=mTweenParameterList.size() > 0 ? mTweenParameterList.get(mTweenParameterList.size() - 1) : mInitialParam;
  mTweenParameterList.add(new TweenParameter(beforeParam.x,beforeParam.y,Util.convertAlphaFloatToInt(alpha),beforeParam.scaleX,beforeParam.scaleY,beforeParam.rotation,animDuration,ease));
  return this;
}

public Composer alpha ( long animDuration , float alpha , Ease ease ) { AnimParameter beforeParam = mTweenParameterList . size ( ) > 0 ? mTweenParameterList . get ( mTweenParameterList . size ( ) - 1 ) : mInitialParam ; mTweenParameterList . add ( new TweenParameter ( beforeParam . x , beforeParam . y , Util . convertAlphaFloatToInt ( alpha ) , beforeParam . scaleX , beforeParam . scaleY , beforeParam . rotation , animDuration , ease ) ) ; return this ; }
queues a tween from the current values to the target properties . set duration to 0 to jump to these value . numeric properties will be tweened from their current value in the tween to the target value .
