code: @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
  	public float getShadowRadius (){
  		if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN)
  			return mInputView.getShadowRadius();
  
  		return 0;
  	}
docs: Gets the radius of the shadow layer.
  
  @return the radius of the shadow layer. If 0, the shadow layer is not visible
  
  @see #setShadowLayer(float, float, float, int)
  
  @attr ref android.R.styleable#TextView_shadowRadius