public void setStartEndTrim(float startAngle, float endAngle) {
        mRing.setStartTrim(startAngle);
        mRing.setEndTrim(endAngle);
    }
Set the start and end trim for the progress spinner arc.

@param startAngle start angle
@param endAngle   end angle
common/src/main/java/com/sxjs/common/widget/pulltorefresh/header/MaterialProgressDrawable.java