private void finish() {
            if (DEBUG) {
                PtrCLog.v(LOG_TAG, "finish, currentPos:%s", mPtrIndicator.getCurrentPosY());
            }
            reset();
            onPtrScrollFinish();
        }
The duration to close time

@param duration
common/src/main/java/com/sxjs/common/widget/pulltorefresh/PtrFrameLayout.java