public void setArrowDimensions(float width, float height) {
            mArrowWidth = (int) width;
            mArrowHeight = (int) height;
        }
Set the dimensions of the arrowhead.

@param width  Width of the hypotenuse of the arrow head
@param height Height of the arrow point
common/src/main/java/com/sxjs/common/widget/pulltorefresh/header/MaterialProgressDrawable.java