code: public void setShadowLayer (float radius, float dx, float dy, int color){
  		mInputView.setShadowLayer(radius, dx, dy, color);
  	}
docs: Gives the text a shadow of the specified blur radius and color, the specified
  distance from its drawn position.
  <p>
  The text shadow produced does not interact with the properties on view
  that are responsible for real time shadows,
  {@link View#getElevation() elevation} and
  {@link View#getTranslationZ() translationZ}.
  
  @see android.graphics.Paint#setShadowLayer(float, float, float, int)
  
  @attr ref android.R.styleable#TextView_shadowColor
  @attr ref android.R.styleable#TextView_shadowDx
  @attr ref android.R.styleable#TextView_shadowDy
  @attr ref android.R.styleable#TextView_shadowRadius